TO INDEX ENGINE ENGINE CONTROL EFI SYSTEM (3SZ-VE, K3-VE) BASIC INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . LOCATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DIAGNOSTIC TROUBLE CODE CHART . . . . . . . . . . . . . . . . . . . . . . . . . . PROBLEM SYMPTOMS TABLE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . HOW TO PROCEED WITH TROUBLESHOOTING . . . . . . . . . . . . . . . . . . CUSTOMER PROBLEM ANALYSIS CHECK SHEET. . . . . . . . . . . . . . . . . CHECK / CLEAR DTCs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . FREEZE FRAME DATA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CIRCUIT DIAGRAM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ECU TERMINALS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ECU DATA LIST / ACTIVE TEST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . FAIL-SAFE CHART . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P0105/31 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P0110/43 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P0115/42 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P0120/41 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P0130/21 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P0135/23 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P0141/24 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P0136/22 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P0171/25 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P0172/26 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P0300/17 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P0301/17 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P0302/17 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P0303/17 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P0304/17 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P0325/18 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P0335/13 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P0340/14 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P0350/16 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P0420/27 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P0443/76 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P0500/52 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P0505/71 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P0535/44 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P1105/32 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P1300/36 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P1346/75 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P1349/73 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P1351/62 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P1510/54 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P1560/61 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P1600/83 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P1601/81 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P1656/74 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . U0101/82 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . U0121/86 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . U0156/87 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . U1000/85 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . U1002/88 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . FUEL PUMP CONTROL SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ES-1 ES-2 ES-3 ES-4 ES-6 ES-7 ES-8 ES-10 ES-12 ES-16 ES-21 ES-27 ES-28 ES-31 ES-35 ES-38 ES-43 ES-47 ES-47 ES-50 ES-53 ES-53 ES-58 ES-58 ES-58 ES-58 ES-58 ES-63 ES-66 ES-69 ES-72 ES-75 ES-79 ES-81 ES-83 ES-87 ES-89 ES-90 ES-94 ES-95 ES-99 ES-100 ES-103 ES-105 ES-106 ES-109 ES-112 ES-112 ES-112 ES-112 ES-112 ES-115 ES ECU POWER SOURCE SYSTEM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ES-120 THROTTLE BODY ASSEMBLY (3SZ-VE) COMPONENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ES-125 ES-127 ES-128 ES-129 KNOCK CONTROL SENSOR (3SZ-VE) ES COMPONENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ES-130 ES-133 ES-134 ES-134 CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (3SZ-VE) COMPONENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ON-VEHICLE INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ES-135 ES-136 ES-136 ES-136 ES-137 ENGINE CONTROL COMPUTER (3SZ-VEÅj COMPONENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ES-138 REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ES-139 INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ES-139 E.F.I. WATER TEMPERATURE (3SZ-VE) INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ES-140 E.F.I. COMPUTER RELAY (3SZ-VE) INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ES-141 THROTTLE POSITION SENSOR (3SZ-VE) INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ES-142 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) ES–1 EFI SYSTEM (3SZ-VE, K3-VE) ENGINE CONTROL BASIC INSPECTION HINT: If the malfunction cannot be determined by troubleshooting, the problem area can be narrowed down by performing the following basic inspection. 1. CHECK BATTERY VOLTAGE (a) Check the condition of the battery.(See page CH - 3.) 2. CHECK WHETHER ENGINE CRANKS (a) Make sure that the engine cranks. HINT: If the engine does not crank, check the starting systems. 3. CHECK WHETHER ENGINE STARTS (a) Make sure that the engine starts. HINT: If the engine does not start, check fuel pressure and spark. 4. CHECK AIR FILTER (a) Check the air filter. HINT: If the air filter is dirty, clean or replace it. 5. CHECK ENGINE IDLE SPEED (See page EM - 2) 6. CHECK IGNITION TIMING (See page EM - 1) 7. CHECK FUEL PRESSURE (See page FU - 3) 8. CHECK FOR SPARK (See page IG - 1) 9. CHECK COMPRESSION (See page EM - 2) ES ES–2 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) LOCATION ENGINE ROOM R/B EFI FUSE INSTRUMENT PANEL J/B FAN RELAY ES ST RELAY E/G FUSE EFI RELAY F/P RELAY AM2 FUSE DLC THROTTLE BODY ASSEMBLY THROTTLE POSITION SENSOR ISCV COMBINATION METER VACUUM SENSOR CAMSHAFT POSITION SENSOR EVAP PURGE VSV INLET AIR TEMPERATURE SENSOR FUEL INJECTOR ASSEMBLY FUEL PUMP AUTOMATIC CONTROL COMPUTER ENGINE CONTROL COMPUTER OXYGEN SENSOR NO. 2 KNOCK CONTROL SENSOR COOLANT TEMPERATURE IGNITION COIL ASSEMBLY OXYGEN SENSOR CRANKSHAFT POSITION SENSOR CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY A135187J02 ES–3 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) DIAGNOSTIC TROUBLE CODE CHART DTC No. Diagnostic Item Lamp Code Memory See Page P0105/31 Air intake pressure sensor signal system { { ES - 28 P0110/43 Intake air temperature sensor signal system { { ES - 31 P0115/42 Coolant temperature sensor signal system { { ES - 35 P0120/41 Throttle sensor signal system { { ES - 38 P0130/21 Front O2 sensor signal system { { ES - 43 P0135/23 Front O2 sensor heater signal system { { ES - 47 P0136/22 Rear O2 sensor signal system { { ES - 50 P0141/24 Rear O2 sensor heater { { ES - 47 P0171/25 Fuel system (lean malfunction) { { ES - 53 P0172/26 Fuel system (rich malfunction) { { ES - 53 { { ES - 58 P0300/17 Misfire P0301/17 Misfire (#1 cylinder) P0302/17 Misfire (#2 cylinder) P0303/17 Misfire (#3 cylinder) P0304/17 Misfire (#4 cylinder) P0325/18 Knock sensor signal system × P0335/13 Engine revolution sensor signal system P0340/14 Cam angle sensor signal system P0350/16 Ignition primary system P0443/76 EVAP purge VSV P0420/27 Catalyst deterioration { P0500/52 Vehicle speed signal system { { ES - 81 P0505/71 ISC valve system { { ES - 83 P0535/44 A/C evaporator temperature sensor signal system × { ES - 87 P1105/32 Atmospheric pressure sensor signal system { { ES - 89 P1300/36 Ionic current system { { ES - 90 P1346/75 VVT control system (valve timing fail) { { ES - 94 P1349/73 VVT control (advance angle and retard angle fail) { { ES - 95 P1351/62 Timing chain control system × { ES - 99 P1510/54 Starter signal system { { ES - 100 P1560/61 Short to back up power source { { ES - 103 { { { { { { { { ES - 58 ES - 58 ES - 58 ES - 58 { ES - 63 { { ES - 66 { { ES - 69 { { ES - 72 { { { ES - 79 ES - 75 ES ES–4 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) DTC No. ES Lamp Code Memory See Page P1600/83 Keyless system/ immobiliser system communication system (malfunction in ECU) Diagnostic Item × { ES - 105 P1601/81 Keyless / immobiliser system communication system (code does not match, communication error) × { ES - 106 P1656/74 OCV control system { { ES - 109 U0101/82 EAT/ CVT communication (reception) { { ES - 112 U0121/86 ABS communication (reception) { { ES - 112 U0156/87 Meter communication (receiving) { { ES - 112 U1000/85 EAT communication (transmission) { { ES - 112 U1002/88 CAN communication { { ES - 112 PROBLEM SYMPTOMS TABLE Symptom Engine does not crank Suspected Area ST - 10 2. Starter relay ST - 21 3. Neutral start switch system AT - 57 1. See flowchart (ECU power source) 2. Igniter system No initial combustion (engine does not start) ES - 115 FU - 12 2. Igniter system 3. Injector 4. Crank position sensor system Engine does not start (when cold) IG - 1 4. Injector 1. See flowchart (fuel pump control system) Engine does not start but cranks normally) ES - 120 3. See flowchart (fuel pump control system) 5. Crank position sensor system Incomplete combustion (engine does not start) See Page 1. Starter assembly IG - 14 ES - 115 IG - 1 FU - 12 IG - 14 1. Throttle body system ES - 129 2. See flowchart (fuel pump control system) ES - 115 3. Igniter system IG - 1 4. Spark plug IG - 18 5. Compression EM - 2 6. Injector FU - 12 7. Crank position sensor system IG - 14 1. Throttle body system ES - 129 2. See flowchart (fuel pump control system) ES - 115 3. Injector FU - 12 4. Igniter system IG - 1 5. Spark plug IG - 18 6. Crank position sensor system IG - 14 ES–5 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) Symptom Engine does not start (when warm) Suspected Area ES - 129 2. See flowchart (fuel pump control system) ES - 115 3. Injector FU - 12 4. Igniter system IG - 1 5. Spark plug IG - 18 6. Crank position sensor system Fast idle problem Idle speed is too high 1. Throttle body system 2. Spark plug 2. See flowchart (ECU power source) ES - 120 2. Neutral start switch system Surging Engine stall (right after starting engine) FU - 12 1. Throttle body system ES - 129 2. Injector FU - 12 3. Igniter system IG - 1 4. Compression EM - 2 IG - 18 1. Throttle body system ES - 129 ES - 120 3. See flowchart (fuel pump control system) ES - 115 IG - 17 1. See flowchart (fuel pump control system) ES - 115 2. Injector FU - 12 3. Igniter system IG - 1 4. Spark plug IG - 17 1. Igniter system IG - 1 2. Injector FU - 12 1. See flowchart (fuel pump control system) ES - 115 2. Spark plug IG - 17 3. Injector FU - 12 1. See flowchart (fuel pump control system) ES - 115 2. Throttle body system ES - 129 3. Crank position sensor system IG - 14 IG - 1 1. Injector FU - 12 2. Throttle body system ES - 129 3. Engine control computer ES - 16 4. Crank position sensor system IG - 14 5. Igniter system IG - 1 1. Neutral start switch system Engine stall (when the shift lever is in the D position) ES - 115 2. See flowchart (ECU power source) 4. Igniter system Engine stall (right after slowing down) AT - 57 ES - 115 4. Spark plug After fire ES - 129 4. Injector 6. Spark plug Stumbling, poor acceleration AT - 57 3. See flowchart (fuel pump control system) 5. See flowchart (fuel pump control system) Hunting IG - 18 ES - 129 1. Throttle body system Idle is unstable IG - 14 ES - 129 1. Throttle body system 3. Neutral start switch system Idle speed is too low See Page 1. Throttle body system 2. Throttle body system AT - 57 ES - 129 3. Crank position sensor system IG - 14 4. Igniter system IG - 1 ES ES–6 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) HOW TO PROCEED WITH TROUBLESHOOTING ES 1 VEHICLE BROUGHT TO WORKSHOP 2 CONDUCT CUSTOMER PROBLEM ANALYSIS AND CHECK SYMPTOMS (See page ES - 7.) 3 CHECK CAN COMMUNICATION SYSTEM (See page CA - 4.) (a) Using the DS-II, select CAN BUS DIAGNOSIS / CHECK ECU CONNECTED TO CAN BUS LINE screen (see CA - 8), and make sure all ECU and sensors that are connected to the CAN communication are displayed on the screen. NG GO TO CAN COMMUNICATION SECTION OK 4 CHECK FOR DIAGNOSTIC TROUBLE CODES (See page ES - 8.) (a) (b) (c) Check for DTCs and freeze frame data. Delete DTCs and freeze frame data. Recheck for DTCs. (1) If DTCs are present, go to A. (2) If DTCs are not present, go to B. B GO TO STEP 7 A 5 TROUBLESHOOT USING DTCS OR DIAGNOSTIC TROUBLE CODE CHART (MAIN SUSPECTED AREAS) (a) (b) 6 If the location of the problem is determined, go to A. If the location of the problem is not determined, go to B. A GO TO STEP 12 B GO TO STEP 9 PROBLEM SYMPTOMS TABLE (See page ES - 4.) (a) (b) If the location of the problem is determined, go to A. If the location of the problem is not determined, go to B. ES–7 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) A GO TO STEP 12 B 7 BASIC INSPECTION (See page ES - 1.) (a) (b) A If the location of the problem is determined, go to A. If the location of the problem is not determined, go to B. GO TO STEP 12 ES B 8 CHECK USING DS-II (See page ES - 21.) (a) (b) (c) A Select ECU data list or active test. If the location of the problem is determined, go to A. If the location of the problem is not determined, go to B. GO TO STEP 12 B 9 CHECK VOLTAGE OF ECU VOLTAGE AND CIRCUIT (See page ES - 16.) 10 REPAIR PROBLEM AREAS 11 CHECK FOR DIAGNOSTIC TROUBLE CODES (See page ES - 8.) END CUSTOMER PROBLEM CHECK SHEET 1. ANALYSIS Ask the customer about problems and concerns. (a) Follow the previous troubleshooting procedure, and use the customer problem analysis check sheet to make sure that the proper questions are asked when interviewing the customer about problems. ES–8 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) Engine Problem Diagnosis Check Sheet Model Date vehicle brought in Date registered VIN Service history Registration No. Odometer reading Date problem first occurred No/Yes (__times) km Accessories Main region/purpose of travel Previous vehicle ES Customer profile/characteristics Description of symptoms Off/On ( Warning light illumination System Conditions Driving Conditions Road Conditions Starting off Cruising Increasing speed Decreasing speed Braking Turning Stopped Not related Others ( ) Speed problem first occurred( )km/h Shift position ( ) range Starting off Immediately after start off ( ) min after start Check After ( )min driving Results Cold Warm Idling Others ( ) Level Uphill Downhill Dry paved road Wet paved road Unpaved/rough road Snowy/icy road Uneven, manholes etc. Others ( ) ) Problem Frequency Others Accelerator opening ( )% Ambient air temperature ( ) Always One time only Sometimes (_)times a day (_)times a week (_)times a month Weather ( ) Additional Items DTC Inspection Malfunction Indicator Lamp (MIL) Off/On Normal Code(s) Malfunction code(s)(all noted) Fuel pressure when engine stopped Fuel pressure 1 min. after engine stopped Problem details Inspection Driving conditions and location when problem first Results occurred and reoccurred Reoccurrence conditions Occasional Always Dealer Name Once problem occurs, it continues Office Person in charge Does not reoccur Technician A066666 CHECK / CLEAR DTCs 1. PREPARE FOR INSPECTION (a) Make sure that the throttle valve is fully closed. ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) (b) (c) 2. DS DLC ES–9 Move the shift lever to the N or P position. Turn off the air conditioner. CHECK DTCs (using DS-II) (a) Connect the DS-II to the DLC. (b) Turn the ignition switch to the ON position. (c) Turn the DS-II power ON. (d) Following the prompts on the screen, select CHECK DTCs/ FREEZE FRAME DATA on the DIAGNOSIS - EFI scree, and check for DTCs. HINT: If a DTC is displayed on the DS-II, see IN - 30. A136722J02 3. EFIT E G100942 CHECK DTCs (using the check engine warning light) NOTICE: • Turn the ignition switch to the ON position before reading the DTCs, and check that the check engine warning light is flashing. • The CHECK MODE cannot be used. (a) Turn the ignition switch off. (b) Using the diagnosis check wire, short terminals 12 (EFIT) and 4 (E) of the DLC. SST 09843-18020-000 NOTICE: • Do not connect the diagnosis check wire to the wrong terminals. Doing so may cause malfunctions. • Use only the dedicated diagnosis check wire. (c) Normal Code 0.25 Sec. 0.25 Sec. 2 Sec. Abnormal Code (Example [11] [23] ) Repeated 4 Sec. 1.5 Sec. 2.5 Sec. 0.5 Sec. 0.5 Sec. C040092J07 (d) 4. Turn the ignition switch to the ON position, and count the number of flashes of the check engine warning light. HINT: • If the indicator light does not indicate a DTC (the light does not blink), there may be a malfunction in the TC terminal, VC terminal, or the computer. • If the check engine warning light remains on, the wire harness may have a short circuit (due to being pinched or for other reasons) or the computer may be malfunctioning. • If an irrelevant DTC is detected, the computer may be malfunctioning. • If the check engine warning light comes on at engine speed of approximately1000 r/min or more and no DTC is output, turn the ignition switch to the OFF position and recheck. Disconnect diagnosis check wire No.2. CHECK FREEZE DATA (using DS-II) (a) Using the DS-II, follow the prompts on the screen, and select the DTC that records the freeze data (marked !) from the DTC / FREEZE DATA screen. HINT: • The engine condition (ECU data) before and after DTCs are detected can be checked using the time series freeze frame data. (See page ES - 10.) • The time series freeze frame data is helpful in troubleshooting when the symptom cannot be reproduced. ES ES–10 ES ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) 5. DELETE RECORDED DTCs (using DS-II) (a) Following the prompts on the screen, select the DTC / FREEZE DATA screen and delete the DTCs. NOTICE: • If the DTCs cannot be deleted, turn the ignition switch off, then perform the procedure again. • Until the cause of problems are clarified, do not delete the DTCs using the DS-II. • Write the DTCs down before deleting them. 6. DELETE DTCs (by removing a fuse) (a) The recorded codes can be deleted by removing the EFI fuse (15A) for more than 60 seconds after turning the ignition switch to the OFF position. NOTICE: • Be sure to clear the DTCs and check that a normal code is output after the EFI system inspection is finished. • Do not delete the DTCs by clearing the battery (removing a fuse) until the cause of the problems is clarified. • Write the DTCs down before deleting them. Engine Room R/B EFI Fuse A133909J01 Freeze Frame Data 1. CHECK FREEZE FRAME DATA (a) If the symptom can not be reproduced even though a DTC is detected, check the freeze frame data. (1) Connect the DS-II to the DLC. (2) Turn the ignition switch to the ON position. (3) Select DIAGNOSIS → EFI → DTC / FREEZE DATA. (4) Detected DTCs will be displayed on the DTC screen. (5) Select the DTCs to check the desired freeze data. HINT: The DTCs are marked with the character, !, and the highlighted codes contain freeze data. 2. CHECK TIME SERIES FREEZE FRAME DATA (a) Select the item to check the desired time series freeze data on the freeze data screen. HINT: • The previous version of freeze data recorded ECU data only when DTCs occurred (when detected), but time series freeze frame data also records ECU data before and after DTCs are detected. • Time series freeze frame data can be checked when TIME SERIES FREEZE DATA CAN BE CHECKED is displayed on the freeze data screen. • The time series freeze frame data can display up to 3 data points, including the DTC inspection point, 1 point for before inspection, and 1 point after inspection. 3. FREEZE DATA CHART Time Sequence Of Data Recording Timing DTC Detection Point ▼ 1 2 3 :Time Sequence of Data Recording Point (Recorded At 0.5 Second Intervals) A138074J01 Item Shorted Item Coolant temperature ECT Air intake pressure MAP Engine speed r/min ES–11 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) Item Shorted Item Vehicle speed VS Ignition timing advance angle ITA Injection volume TAUX Injection timing TAUZ ES ES–12 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) CIRCUIT DIAGRAM General Export Starter AM2 A/T ECU ST Relay Ignition Switch ES MAIN E/G 10A EFI 15A 120 38 Battery 39 ST 7.5A IGSW STSW BAT N1+ MRO EFI Relay N1- N2+ N227 59 1 128 2 58 1 127 2 121 2 123 2 15 1 Oxygen Sensor 3 18 1 Oxygen Sensor NO. 2 2 56 1 53 3 Crankshaft Position Sensor Camshaft Position Sensor +B KNK F/P Relay 35 107 Knock Control Sensor 1 FC1 To Fuel Pump OX1 OXH1 4 To +B Injector No. 1 2 1 24 #10 OX2 Injector No. 2 2 1 23 #20 VC Injector No. 3 VTH 2 1 22 THW 2 2 EVAP Purge VSV 1 21 16 THA PRG 2 Indicator E1 3 ISCV 65 54 2 55 1 Coolant Temperature 1 #40 E2 1 2 #30 Injector No. 4 1 Throttle Position Sensor E01 ISC E1 Inlet Air Temperature Sensor 2 19 20 125 Engine Control Computer A135479J01 ES–13 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) General Export To IG2 Stop Light Switch Assembly 3 1 4 63 STP 10A IG1 Ignition Coil Assembly (No. 1 Cylinder) STP To Battery 43 Stop Light 3 1 4 62 IG2 Ignition Coil Assembly (No. 2 Cylinder) DEF 11 Defogger ES Defogger Switch To DEF Fuse 3 1 4 61 Ignition Coil Assembly (No. 3 Cylinder) IG3 OCV+ 1 4 3 OCV- 60 26 1 OCV 2 25 IG4 Ignition Coil Assembly (No. 4 Cylinder) VCPM PIM To Ignition Plugs E2PM ACEV E21 Engine Check Light 13 57 52 3 2 Vacuum Sensor 1 122 45 1 A/C Evaporator Temperautre Sensor 2 116 W EPS 12 P/S Oil Pressure Switch FAN Relay 37 Fan Motor FAN1 SIO2 FPOF Alternator 135 ALT BLW ACSW 9 Meter ECU 8 7 A/T ECU 6 4 HCAN REV 117 44 9 Immobiliser ECU* Airbag ECU 42 45 To A/C 118 Tachometer LCAN CANH EFIT 113 DLC CANL ATNE Engine Control Computer : Immobiliser Equipped Vehicles A135480J01 ES–14 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) EU Specifications Starter AM2 A/T ECU ST Relay Ignition Switch MAIN E/G 10A EFI15A 120 ES 38 Battery 39 ST 7.5A IGSW STSW BAT N1+ MRO EFI Relay N1- N2+ N227 59 1 128 2 58 1 Crankshaft Position Sensor 127 Camshaft Position 2 Sensor 121 2 123 2 15 1 18 2 14 1 +B KNK F/P Relay 34 107 Knock Control Sensor 1 FAN2 To Fuel Pump OX1 OXH1 4 Oxygen Sensor 3 To B Injector No. 1 1 24 2 #10 OX2 OXH2 Injector No. 2 2 1 23 VC 22 2 VTH 2 THW 2 EVAP Control VSV 21 1 16 THA PRG 2 To E1 3 ISCV 65 To B 56 1 53 3 54 2 55 1 Intake Air Temperature 2 Sensor Throttle Position Sensor 2 Coolant Temperature Sensor 1 #40 E2 1 3 #30 Injector No. 4 1 4 #20 Injector No. 3 1 Oxygen Sensor NO. 2 E01 ISC E1 19 20 125 Engine Control Computer A138429J01 ES–15 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) EU Specifications Stop Light Switch Assembly To IG2 1 Ignition Coil Assembly 4 (No. 1 Cylinder) 3 63 2 51 To Battery IG1 ICMB1 STP 10A 43 STP Stop Light 1 3 62 Ignition Coil Assembly 4 (No. 2 Cylinder) 2 50 IG2 ICMB2 11 DEF Defogger ES Defogger Switch To DEF Fuse 1 3 61 Ignition Coil Assembly 4 (No. 3 Cylinder) 2 49 IG3 ICMB3 OCV+ 1 3 61 Ignition Coil Assembly 4 (No. 4 Cylinder) 2 48 1 OCV 2 25 OCVIG4 ICMB4 VCPM To Ignition Plugs 45 ACEV Engine Check Light 3 Intake Air 2 Pressure Sensor 1 122 E2PM Condensor 57 52 PIM 1 A/C Evaporator Temperature Sensor 2 116 E21 13 26 W 12 PST P/S Oil Pressure Switch Fan Relay 37 Fan Motor FAN1 117 SIO2 44 FPOF Alternator 135 ALT 9 8 7 A/T ECU 6 4 HCAN Immobiliser ECU Airbag ECU 42 BLW ACSW Meter ECU 9 REV 45 To A/C 118 Tachometer 113 DLC LCAN CANH EFIT CANL ATNE A/T * To Deicer Engine Control Computer * : Specifications For Cold Region Vehicles A138430J01 ES–16 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) ECU TERMINALS Connector A 27 26 25 24 23 22 20 21 69 68 67 66 65 64 63 62 61 60 ES Connector C Connector B 19 18 17 16 15 14 59 58 57 56 55 54 53 52 51 50 49 48 13 12 11 10 Connector D 9 7 8 47 46 45 44 43 42 41 40 39 38 6 5 4 3 2 1 37 36 35 34 33 32 31 30 29 28 106105 104103102101100 99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81 80 79 78 77 76 75 74 73 72 71 70 135134 128127 126125 124123 122 121 120119 118 117 116 112 111 110109 133132 131130129 115 114 113 108107 Connector B Connector A *2 +B OCV+ OCV- #10 #20 E01 #40 #30 E2 OX2 PRG OXH1 *2 ISC IG1 IG2 IG3 IG4 ALT ALTC N1+ N2+ VCPM VC N1- THA THW VTH PIM ICM B1 Connector C W DEF IGSW REV SIO2 E21 *2 Connector D HCAN LCAN CANH CANL ATNE *1 ACEV FPOF STP BLW *2 ICM ICM ICM B2 B3 B4 PST OX1 E2PM KNK E1 N2- *2 OXH2 A/T MRO BAT ACSW *2 FAN1 MGC FC1 FAN2 EFIT STSW *1 : Only For General Export *2 : Only For Europe A139505J01 ES–17 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) ECU TERMINAL VOLTAGE CHART (EFI SYSTEM) Terminal Name (Terminal No.) BAT ←→ E1 (38←→125) +B ←→ E1 (27←→125) IGSW ←→ E1 (120←→125) MRO ←→ E1 (39←→125) VC ←→ E2 (56←→19) IG1 ←→ E1 (63←→125) IG2 ←→ E1 (62←→125) IG3 ←→ E1 (61←→125) IG4 ←→ E1 (60←→125) N1+ ←→ N1(59←→128) N2+ ←→ N2(58 ←→ B127) # 10 ←→ E1 (24←→125) # 20 ←→ E1 (23←→125) # 30 ←→ E1 (22←→125) # 40 ←→ E1 (21←→125) OX1 ←→ E2 (123←→19) OX2 ←→ E2 (18←→19) KNK ←→ E2 (121←→19) THW ←→ E2 (54←→19) THA ←→ E2 (55←→19) W ←→ E1 (13←→125) W ←→ E1 (13←→125) STSW ←→ E1 (107←→125) VTH ←→ E2 (53←→19) VTH ←→ E2 (53←→19) ISC ←→ E1 (65←→125) OXH1 ←→ E1 (15←→125) Input / Output Measurement condition Standard (V) Input Always 10-14 Input Engine is stopped, ignition switch is ON 10-14 Input Engine is stopped, ignition switch is ON 10-14 Input Engine is stopped, ignition switch is ON 10-14 Input Engine is stopped, ignition switch is ON 4.5-5.5 Output Engine is idling Pulse is generated (Waveform 1) Output Engine is idling Pulse is generated (Waveform 1) Output Engine is idling Pulse is generated (Waveform 1) Output Engine is idling Pulse is generated (Waveform 1) Input Engine is idling Pulse is generated (Waveform 2) Input Engine is idling Pulse is generated (Waveform 3) Output Engine is idling Pulse is generated (Waveform 4) Output Engine is idling Pulse is generated (Waveform 4) Output Engine is idling Pulse is generated (Waveform 4) Output Engine is idling Pulse is generated (Waveform 4) Input O2 sensor is warmed up, constant engine speed of 3000 r/min Pulse is generated (Waveform 5) Input O2 sensor is warmed up, constant engine speed of 3000 r/min Pulse is generated (Waveform 5) Input Engine is idling Pulse is generated (Waveform 6) Input Coolant temperature 60 to 120°C 0.3-1.3 Input Engine is warmed up 0.5-4.3 Output Engine is idling (the check engine light is off) 10-14 Output Disconnect the connector of the coolant temperature sensor. (the check engine light is on) 0-3.5 Input Starter switch is ON 10-14 Input Throttle valve is fully closed 0.4-0.8 Input Throttle valve is fully opened 3.2-5.0 Output Engine is idling Air conditioner switch is OFF → ON Pulse is generated (Waveform 7) Output After engine idles for more than 5 seconds 0-1 ES ES–18 Terminal Name (Terminal No.) OXH1 ←→ E1 (15←→125) STP ←→ E1 (43←→125) STP ←→ E1 (43←→125) ATNE ←→ E1 (16←→125) ES ATNE ←→ E1 (16←→125) FC1 ←→ E1 (35←→125) FC1* ←→ E1 (35←→125) REV ←→ E1 (118←→125) FAN1 ←→ E1 (37←→125) FAN1 ←→ E1 (37←→125) OCV+ ←→ OCV(26←→25) EPS ←→ E1 (12←→125) EPS ←→ E1 (12←→125) ALTC ←→ E1 (134←→125) ALT ←→ E1 (135←→125) VCPM ←→ E2PM (57←→122) PIM ←→ E2PM (52←→122) ACEV ←→ E21 (45←→116) E1 ←→ Body ground (125) E2 ←→ Body ground (19) E01 ←→ Body ground (20) E21 ←→ Body ground (116) ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) Input / Output Measurement condition Standard (V) Output Engine is stopped, ignition switch is ON 10-14 Input Stop light switch is ON 10-14 Input Stop light switch is OFF 0-0.5 Output Engine is stopped, ignition switch is ON 10-14 Output Engine is warmed up, accelerator pedal is depressed Pulse is generated (Waveform 8) Output Engine is stopped, ignition switch is ON 10-14 Output Engine is idling Below 1.2 Output Engine is idling Pulse is generated (Waveform 9) Output Magnetic clutch is OFF 10-14 Output Magnetic clutch is ON Below 1 Output Engine is stopped, ignition switch is ON Pulse is generated (Waveform 10) Input Engine is idling Steering wheel is centered 10-14 Input Engine is idling Steering wheel is turned 0-1 Input Engine is stopped, ignition switch is ON 10-14 Input Engine is stopped, ignition switch is ON 10-14 Input Engine is stopped, ignition switch is ON 4.5-5.5 Input Sensor adjusted to stable ambient temperature 3.1-4.1 Input Air conditioning is ON 0.15-4.8 Ground Always (continuity check) Continuity Ground Always (continuity check) Continuity Ground Always (continuity check) Continuity Ground Always (continuity check) Continuity *: FAN2 terminal for European models ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) 1. ES–19 Oscilloscope waveform (a) Waveform 1 Tester Connection Tool setting Measurement condition IG1, IG2, IG3, IG4 ←→ E1 5 V/DIV, 10 ms/DIV Engine is idling after warming up HINT: • As the engine speed increases, the waveform cycle becomes shorter. • The oscilloscope waveform shown as an example, does not include noise or chattering waveforms. A134282 (b) Waveform 2 Tester Connection Tool setting Measurement condition N1+ ←→ N12 V/DIV, 20 ms/DIV Engine is idling HINT: • As the engine speed increases, the waveform cycle becomes shorter. • As the engine speed increases, each waveform cycle becomes shorter. • Noise may cause DTCs to be recorded. A134283 (c) Waveform 3 Tester Connection Tool setting Measurement condition N2+ ←→ N22 V/DIV, 20 ms/DIV Engine is idling HINT: • As the engine speed increases, the waveform cycle becomes shorter. • As the engine speed increases, each waveform cycle becomes shorter. • Noise may cause DTCs to be recorded. A134284 (d) Waveform 4 Tester Connection Tool setting Measurement condition # 10, # 20, # 30, # 40 ←→ E1 20 V/DIV, 20 ms/DIV Engine is idling HINT: As the engine speed increases, the waveform cycle becomes shorter. A134285 ES ES–20 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) (e) Waveform 5 Tester Connection Tool setting Measurement condition OX1, OX2 ←→ E1 0.2 V/DIV, 500 ms/DIV Oxygen sensor is warmed up, constant engine speed of 3000 r/min HINT: Repeat between 0 (LEAN) ←→ 1(RICH)V A134286 ES (f) Waveform 6 Tester Connection Tool setting Measurement condition 1 V/DIV, 1 ms/DIV. Engine is idling HINT: • The oscilloscope waveform shown as an example does not include noise or chattering waveforms. • The waveform amplitudes differ slightly depending on the vehicle. A134287 (g) Waveform 7 Tester Connection Air Conditioner OFF KNK ←→ E1 Tool setting Measurement condition ISC ←→ E1 5 V/DIV, 1 ms/DIV Engine is idling, air conditioning is OFF → ON HINT: The duty ratio changes if the air conditioning is turned ON. Air Conditioner ON A134289 ES–21 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) (h) Waveform 8 Tester Connection Tool setting Measurement condition ATNE ←→ E1 5 V/DIV, 50 ms/DIV Engine is idling HINT: If the waveform shown in the illustration is not indicated, idle the engine for 10 minutes and recheck the waveform. A134290 (i) ES Waveform 9 Tester Connection Tool setting Measurement condition REV ←→ E1 5 V/DIV, 10 ms/DIV Engine is idling HINT: As the engine speed increases, the waveform cycle becomes shorter. A134291 (j) Waveform 10 Tester Connection OCV+ ←→ OCV- Tool setting 5 V/DIV, 1 ms/DIV Measurement condition Engine is idling HINT: As the engine speed increases, the waveform cycle becomes shorter. A134292 ECU DATA LIST / ACTIVE TEST 1. ECU DATA LIST CHART NOTICE: • As the data list values may vary widely depending on slight measurement errors, the measurement environment, or the state of the vehicle due to wear and tear, it is very difficult to indicate specific standard values (reference values).Therefore, in some cases, an error may occur within the range of reference values. • For delicate symptoms such as stumbling, rough idle, obtain and compare multiple test data using the same vehicle under the same conditions, and determine problems wholistically by considering all suspected items on the data list. CARB SPECIFIED DATA CHART Item (Shorted Item) MIL status (MIL) Item Description •Illumination condition of the check engine warning light •ON: on, OFF: off Inspection Condition Reference Value Problem Area Check engine warning light is on → off ON → OFF W voltage ES–22 Item (Shorted Item) ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) Item Description Inspection Condition Reference Value Problem Area Number of power train trouble codes (DIAG) •Indicates the number of DTCs •Displayed range: 0 to 255 - 0 - Fuel system status of bank 1 (FS1) •Fuel system status of bank 1 is indicated •OL (open loop): conditions are not satisfied to go from open loop to closed loop •CL (close loop): oxygen sensor is used as feedback for fuel control •OL - Drive: open loop due to drive condition •OL - Fault: open loop due to detected system malfunction •CL- Fault: close loop, but at least one oxygen sensor is malfunctioning. Only one oxygen sensor is used for fuel control Engine is idling after warming up CL OX1 Voltage Fuel system status of bank 2 (FS2) •Fuel system status of bank 2 is indicated •OL (open loop): conditions are not satisfied to go from open loop to closed loop •CL (close loop): oxygen sensor is used as feedback for fuel control •OL - Drive: open loop due to drive condition •OL - Fault: open loop due to detected system malfunction •CL- Fault: close loop, but at least one oxygen sensor is malfunctioning. Only one oxygen sensor is used for fuel control - - - O2 sensor position (O2S11) •Existence of bank 1 sensor 1 is indicated •ON: yes, OFF: no - ON - O2 sensor position (O2S12) •Existence of bank 1 sensor 2 is indicated •ON: yes, OFF: no - ON - O2 sensor position (O2S13) •Existence of bank 1 sensor 3 is indicated •ON: yes, OFF: no - - - O2 sensor position (O2S14) •Existence of bank 1 sensor 4 is indicated •ON: yes, OFF: no - - - O2 sensor position (O2S21) •Existence of bank 2 sensor 1 is indicated •ON: yes, OFF: no - - - O2 sensor position (O2S22) •Existence of bank 2 sensor 2 is indicated •ON: yes, OFF: no - - - ES ES–23 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) Item (Shorted Item) Item Description Inspection Condition Reference Value Problem Area O2 sensor position (O2S23) •Existence of bank 2 sensor 3 is indicated •ON: yes, OFF: no - - - O2 sensor position (O2S24) •Existence of bank 2 sensor 4 is indicated •ON: yes, OFF: no - - - - EOBD - OBD requirements (OBD) OBD requirements are indicated (EOBD) Calculated load value (LOAD) •Engine load amount is indicated •Displayed range: 0 to 100% Engine is idling (air conditioner is OFF, shift lever is in N position) 0-5% Air cleaner condition Throttle valve condition Calculated load value (LOAD) •Engine load amount is indicated •Displayed range: 0 to 100% Engine speed is 2000 r/ min (air conditioning is OFF, shift lever is in N position) 5-7% Air cleaner condition Throttle valve condition Coolant temperature (ECT) •Indicates engine coolant temperature •Displayed range: -40 to 140°C Engine warmed up completely 80 to 102°C THW Voltage Coolant temperature (ECT) •Indicates engine coolant temperature •Displayed range: -40 to 140°C Short circuit in sensor 119 to 140°C THW Voltage Coolant temperature (ECT) •Indicates engine coolant temperature •Displayed range: -40 to 140°C Short circuit in sensor -40°C THW voltage Air intake pressure (MAP) •Air intake pressure is indicated as absolute pressure •Displayed range: 0 to 120 kPa Ignition switch is in ON position, engine is stopped 70 to 104 kPa •VCPM voltage •PIM voltage Air intake pressure (MAP) •Air intake pressure is indicated as absolute pressure •Displayed range: 0 to 120 kPa Engine is warmed up and idling, air conditioner is OFF 20 to 40 kPa •VCPM voltage •PIM voltage Engine speed (R/MIN) Indicates the engine speed Engine is stopped (IG ON) 0 r/min N voltage Engine speed (R/MIN) Indicates the engine speed Constant engine speed No significant fluctuation N voltage Vehicle speed (VS) Indicates vehicle speed The vehicle is stopped 0 km/h SPD voltage Vehicle speed (VS) Indicates vehicle speed Vehicle is running at constant speed No significant fluctuation SPD voltage Ignition timing advance angle (ITA) •Indicates ignition timing of the 1-cylinder •Displayed range: BTDC 63.5 to ATDC 64° Engine is cranking (air conditioner is OFF, shift lever is in N position) 4-8° IG voltage Each sensor voltage Ignition timing advance angle (ITA) •Indicates ignition timing of the No.1 cylinder •Displayed range: BTDC 63.5 to ATDC 64° Engine is idling (air conditioner is OFF, shift lever is in N position) 0-15° IG voltage Each sensor voltage Ignition timing advance angle (ITA) •Indicates ignition timing of the No.1 cylinder •Displayed range: BTDC 63.5 to ATDC 64° Engine speed is 2000 r/ min (air conditioner is OFF, shift lever is in N position) 20-40° IG voltage Each sensor voltage ES ES–24 Item (Shorted Item) ES ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) Item Description Inspection Condition Reference Value Problem Area Intake air temperature (IAT) •Indicates air temperature •Displayed range: -40 to 140°C IG ON Equivalent to ambient temperature THW voltage Intake air temperature (IAT) •Indicates intake air temperature •Displayed range: -40 to 140°C Short circuit in sensor 119 to 140°C THW voltage Intake air temperature (IAT) •Indicates intake air temperature •Displayed range: -40 to 140°C Short circuit in sensor -40°C THW voltage Opening angle of absolute throttle sensor (TP) •Indicates opening angle of throttle valve 1 •Displayed range: 0 to 100 % Accelerator pedal fully depressed (IG ON) 10-24% VC, VTH voltage (Throttle position sensor No.1) Opening angle of absolute throttle sensor (TP) •Indicates opening angle of throttle valve 1 •Displayed range: 0 to 100 % Accelerator pedal fully released (IG ON) 64-96% VC, VTH voltage (Throttle position sensor No.1) FrO2 sensor output voltage (O2FV) •Indicates front O2 sensor output voltage •Displayed range: 0 to 1.275 V 2500 r/min Constant engine speed 0 to 1.0 V OX1 voltage FrO2 short-term fuel trim (O2FP) •Indicates front O2 sensor feedback trim ratio •Displayed range: -100 to 99.2% 2500 r/min Constant engine speed -20-20% OX1 voltage RrO2 sensor output voltage (O2RV) •Indicates rear O2 sensor output voltage •Displayed range: 0 to 1.275 V 2500 r/min Constant engine speed 0.1 to 0.95 V OX2 voltage RrO2 short-term fuel trim (O2RP) •Indicates rear O2 sensor feedback trim factor •Displayed range: -100 to 99.2% 2500 r/min Constant engine speed 10-70% OX2 voltage Driven distance at time of malfunction (DWM) •Indicates distance driven at time DTC is recorded •Displayed range: 0 to 65535 km - 0 to 65535 km - Evaporation purge output (EVAP) •Indicates duty ratio of evaporation purge VSV output •Displayed range: 0 to 100 % Engine is idling after warming up 0% PRG voltage Voltage of each sensor Barometric pressure (BARO) •Indicates barometric pressure •Displayed range: 0 to 255 kPa Ignition switch is in ON position, engine is stopped 73 to 110 kPa - Power source voltage (BAT) •Indicates battery voltage •Displayed range: 0 to 16 V IG ON 11 to 14 V BAT voltage DMC SPECIFIED DATA CHART ES–25 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) Item (Shorted Item) Electrical load (DSW) Air conditioner signal [A/C] Injection timing (TAUZ) Injection timing (TAUZ) Injection timing (TAUZ) Injection timing (TAUZ) ISC duty ratio (ISCD) Item Description Indicates that there is electrical load Indicates that air conditioner is operating Actual displacement angle (VT) Actual displacement angle (VT) Target displacement angle (VTT) Target displacement angle (VTT) O2 sensor signal (OX) Light, defogger OFF → ON OFF → ON Voltage of each switch Air conditioner OFF → ON OFF → ON Voltage of each switch Engine is cool when started → completely warmed up 1.4 to 2.5 msec PIM, THW, OX1 voltage • • Indicates injection timing Displayed range: 0 to 200 msec Engine warmed up and idling (air conditioner is OFF, shift lever is in N position) 1.4 to 1.8 msec PIM, THW, OX1 voltage • • Indicates injection timing Displayed range: 0 to 200 msec Engine speed is 2000 r/min (air conditioner is OFF, shift lever is in N position) 1.3 to 1.8 msec PIM, THW, OX1 voltage • • Indicates injection timing Displayed range: 0 to 200 msec Engine speed is 3000 r/min (air conditioner is OFF, shift lever is in N position) 1.0 to 1.5 msec PIM, THW, OX1 voltage • Indicates duty ratio of ISC drive signal Displayed range: 0 to 100% Engine warmed up and idling (air conditioner is OFF, shift lever is in N position) 6-14% VC voltage VTH voltage THW voltage Indicates duty ratio of ISC drive signal Displayed range: 0 to 100% Engine warmed up and idling (air conditioner is ON, shift lever is in N position) 20-60% VC voltage VTH voltage THW voltage Indicates actual displacement angle of VVT Displayed range: 0 to 50° Engine is idling after warming up 0-5° OCV voltage Indicates actual displacement angle of VVT Displayed range: 0 to 50° Engine is warmed up and running at constant speed 0-10° OCV voltage Indicates target displacement angle of VVT control Displayed range: 0 to 50° Engine is idling after warming up 0-5° OCV voltage Indicates target displacement angle of VVT control Displayed range: 0 to 50° Engine is warmed up and running at constant speed 0-10° OCV voltage Indicates whether air-fuel ratio measured by front O2 sensor is lean or rich 2500 r/min Constant engine speed - OX voltage Indicates learned value of air-fuel ratio compensation Displayed range: 0.75 to 1.25 V 2500 r/min Constant engine speed 0.75 to 1.25 V OX voltage Indicates whether the idle switch is ON or OFF (if the vehicle does not have an idle switch, the ON status is when the throttle is completely closed from the open status) Accelerator pedal fully depressed → released ON → OFF VC voltage VTH voltage • • • • • • • • • • • • • Idle signal (IDL) Problem Area Indicates injection timing Displayed range: 0 to 200 msec • VF monitor (VF) Reference Value • • • ISC duty ratio (ISCD) Inspection Condition ES ES–26 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) Item (Shorted Item) • ISC learned value (DLRN) • • ES Item Description Inspection Condition Reference Value Problem Area Indicates ISC learned value Displayed range: 0 to 100% Engine warmed up and idling (air conditioner is OFF, shift lever is in N position) 6-14% ISC voltage Voltage of each sensor Indicates ISC learned value Displayed range: 0 to 100% Engine warmed up and idling (air conditioner is ON, shift lever is in N position) 6-14% ISC voltage Voltage of each sensor ISC learned value (DLRN) • Purge trim ratio (FPG) • • Indicates purge trim ratio Displayed range: 0 to 0.5V Engine is idling after warming up 0 PRG voltage Voltage of each sensor Knocking trim advance angle (AKNK) • Indicates knock sensor trim advance angle Displayed range: 0 to 20° Engine is idling after warming up 0-3° KNK voltage Knocking trim advance angle (AKNK) • Indicates knock sensor trim advance angle Displayed range: 0 to 20° 4000 r/min Constant engine speed 0-3° KNK voltage Indicates VVT angle equivalency Displayed range: 15 to 90° Engine is warmed up and idling 15-52° VTH voltage Indicates VVT angle equivalency Displayed range: 15 to 90° 3000 r/min Constant engine speed 15-62° VTH voltage Indicates duty ratio of VVT control Displayed range: 0 to 100% Engine is warmed up and idling 20-50% VTH voltage Indicates duty ratio of VVT control Displayed range: 0 to 100% 3000 r/min Constant engine speed 20-50% VTH voltage Indicates the actual air intake pressure Displayed range: 0 to 120 kPa Engine is stopped 80 to 110 kPa PIM voltage Indicates the actual air intake pressure Displayed range: 0 to 120 kPa Engine is warmed up and idling 20 to 40 kPa PIM voltage Indicates the actual air intake pressure Displayed range: 0 to 120 kPa 2000 r/min Constant engine speed 19 to 39 kPa PIM voltage Steering wheel is centered → turned OFF → ON EPS voltage OFF → ON STP voltage - - TVVT angle equivalency (VTB) TVVT angle equivalency (VTB) • • • • • • • Control duty ratio (DVT) • • Control duty ratio (DVT) Actual air intake pressure (PMVTB) Actual air intake pressure (PMVTB) Actual air intake pressure (PMVTB) • • • • • • • Power steering signal (PST) • Indicates power steering signal input Stop lamp signal (STP) • Indicates stop lamp signal input • Indicates the number of DTCs Displayed range: 0 to 255 Number of DTCs (DIAG) • Brake pedal is released → depressed - 2. Item ACTIVE TEST Condition Constraint Condition Fuel pump Fuel pump is ON (active) / OFF (stopped) - Purge VSV Purge control VSV is ON (current) / OFF (no current) - All VSV for purge control are ON (current) / OFF (no current) - All VSV ES–27 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) Item T terminal Condition Constraint Condition T terminal is ON (short) / OFF (short released) - Radiator fan Radiator fan is ON (active) / OFF (stopped) - ISC stepper ISC active duty ratio setting (50 % open / 5 % open) Vehicle is stopped, engine is idling FAIL-SAFE CHART If the codes shown below are recorded on the ECU, it will go to a fail-safe mode. Diagnostic Trouble Code Fail-safe Operation • Fail-safe Mode Deactivation Condition Vacuum sensor value is the pressure estimated from the throttle opening angle and the engine speed.If the signal from the throttle position sensor is abnormal, use the signal from the vacuum sensor as the constant value. If both the throttle opening angle and the engine speed exceed the constant value, decrease the fuel amount. Return to normal condition P0110/43 Use the signal from the intake air temperature sensor as the constant value. Return to normal condition P0115/42 Use the signal from the coolant temperature sensor as the constant value. Return to normal condition P0120/41 Use the signal from the throttle position sensor as the constant value. Return to normal condition P0105/31 • P0136/22 Set feedback control to open control. Return to normal condition P0325/18 Lag the ignition timing. Return to normal condition P0350/16 Stop the fuel injection to the cylinder that has ignition signal problems. Return to normal condition P0535/44 Turn off the air conditioner. Return to normal condition P1600/83 P1601/81 Stop fuel injection and ignition. Return to normal condition P1656/74 Prohibit the oil control valve current control. Return to normal condition ES ES–28 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) DTC P0105/31 AIR INTAKE PRESSURE SENSOR SIGNAL SYSTEM DESCRIPTION Using a built-in sensor, the vacuum sensor detects the intake manifold pressure as voltage. At the same time, the engine control computer determines the basic injection and ignition timing based on this voltage.The vacuum sensor does not detect barometric pressure as a standard value, but it detects the absolute pressure of the inside of the intake manifold, so it is not effected by high latitude or other barometric pressure changes.Therefore, a constant standard air-fuel ratio is maintained under all conditions. ES Voltage (V) (3.96) 3.6 2.4 1.2 mmHg 150 450 750 (840) 20 60 100 (112) kPa Intake Manifold Internal Pressure A051845J01 DTC Detection Condition 1.Diagnosis Condition 2.Malfunction Condition 3.Malfunction Time 4.Other DTC No. P0105/31 1. 2. 3. 4. IG ON Open or short to vacuum sensor circuit 0.5 seconds or more 1 trip Suspected Area • • • Vacuum sensor Wire harness and connector Engine control computer ES–29 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) CIRCUIT DIAGRAM Engine Control Computer Vacuum Sensor 1 2 52 3 57 122 PIM ES VCPM E2PM A133545J02 INSPECTION PROCEDURE HINT: Read the freeze frame data using the DS-II. Freeze data records aspects of the engine's condition when malfunctions occur. This information is helpful when troubleshooting. 1 READ DS-II DATA (AIR INTAKE PRESSURE) (a) (b) Connect the DS-II to the DLC. Read the air intake pressure shown on the DS-II while the ignition switch is turned to the ON position and the engine is stopped. Result Vehicle Condition Standard Engine is stopped, ignition switch is ON 80 to 110 kPa Engine is warmed up and idling (air conditioner is OFF) 20 to 40 kPa Engine is running at a constant speed of 2000 r/min (air conditioner is OFF) 19 to 39 kPa OK NG CHECK FOR INTERMITTENT PROBLEMS ES–30 2 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) CHECK WIRE HARNESS AND CONNECTOR (ENGINE CONTROL COMPUTER VACUUM SENSOR) (a) (b) Engine Control Computer ES Disconnect the vacuum sensor connector and the engine control computer connector B. Using a tester, check whether there is continuity or a short between the engine control computer and the vacuum sensor.(For terminal layout, see page ES - 16.) Standard Inspection Terminal (Terminal Name) Engine control computer ←→ Vacuum sensor Standard 52 (PIM) ←→ 2 (PIM) There is continuity and no shorts between other terminals and body ground 122 (E2PM) ←→ 1 (E2) There is continuity, and no short between other terminals 57 (VCPM) ←→ 3 (VC) VCPM E2PM PIM Intake Pressure Sensor Vehicle Side Connector NG E2 REPAIR OR REPLACE WIRE HARNESS OR CONNECTOR VC PIM A133546J01 OK 3 CHECK VACUUM SENSOR (a) (b) Intake Pressure Sensor 1 2 Inspection Terminal (Terminal Name) Standard 2 (PIM) ←→ 1 (E2) 3.1 to 4.1 V 3 (VC) ←→ 1 (E2) 3 (c) E2 PIM Turn the ignition switch to the ON position. Measure the voltage between the terminals of the vacuum sensor connecter using the tester. Standard VC A133547J01 Remove the fuel pump relay and crank the engine, then measure the voltage between the terminals of the vacuum sensor connector. Standard Inspection Terminal (Terminal Name) 2 (PIM) ←→ 1 (E2) OK NG CHECK AND REPLACE ENGINE ECU 4.5 to 5.5 V Standard Voltage value fluctuates REPLACE THE VACUUM SENSOR ES–31 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) DTC P0110/43 INTAKE AIR TEMPERATURE SENSOR SIGNAL SYSTEM DESCRIPTION The intake air temperature sensor detects the intake air temperature. The resistance of the thermistor built into intake air temperature sensor changes depending on the temperature of the intake air. When the intake air temperature is low, the resistance of the thermistor increases. Conversely, when the temperature of the intake air is high, the resistance of the thermistor drops. The intake air temperature sensor is connected to the engine control computer, and, through resistance R, 5V power source voltage is supplied to the intake air temperature sensor from terminal THA of the engine control computer. Because resistance R and the intake air temperature sensor are connected in series, the resistance changes depending on the intake air temperature and the potential of terminal THA changes. Based on this signal, the engine control computer increases the fuel injection volume to improve drivability during cold engine operation. Resistance [kΩ] 30 20 10 5 3 2 1 0.5 0.3 0.2 0.1 -20 0 20 40 60 80 100 Temperature [°C] A032255J11 DTC No. P0110/24 DTC Detection Condition 1.Diagnosis Condition 2.Malfunction Condition 3.Malfunction Time 4.Other 1. IG ON 2. Open or short to intake air temperature sensor circuit 3. 0.5 seconds or more 4. 1 trip Suspected Area • • • Wire harness or connector INTAKE AIR TEMPERATURE SENSOR Engine control computer ES ES–32 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) CIRCUIT DIAGRAM Engine Control Computer Inlet Air Temperature Sensor ES 1 55 2 19 THA E2 G100102J24 INSPECTION PROCEDURE HINT: • Read the freeze frame data using the DS-II.Freeze data records aspects of the engine's condition when malfunctions occur. This information is helpful when troubleshooting. 1 READ DS-II DATA (INTAKE AIR TEMPERATURE) (a) (b) Connect the DS-II to the DLC. Read the intake air temperature indicated on the DS-II while the ignition switch is turned to the ON position and the engine is stopped. Result Tester Display Proceed to -40°C A 140°C B Equivalent to ambient temperature C B GO TO STEP 4 C CHECK FOR INTERMITTENT PROBLEMS A 2 READ DS-II DATA (WIRE HARNESS OPEN CIRCUIT INSPECTION) SST 09843-18020 ES–33 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) (a) (b) Inlet Air Temperature Sensor Vehicle Side Connector (c) (d) (e) (+) (-) A133551J01 Disconnect the intake air temperature sensor connector. Short the circuit between terminals 2 (-) and 1 (+) of the inlet air temperature sensor vehicle side connector using the SST (diagnosis check wire). Connect the DS-II to the DLC. Turn the ignition switch to the ON position. Read the inlet air temperature displayed on the DS-II. Standard: 140°C OK REPLACE SENSOR INTAKE AIR TEMPERATURE ES NG 3 READ DS-II DATA (CHECK FOR OPEN IN ENGINE CONTROL COMPUTER) SST 09843-18020 (a) Short the circuit between terminals 55 (THA) and 19 (E2) of the engine control computer using the SST (diagnosis check wire). (b) Read the intake air temperature displayed on the DS-II. Standard: 140°C Engine Control Computer NG E2 CHECK AND REPLACE ENGINE CONTROL COMPUTER THA A133549J01 OK REPAIR OR REPLACE WIRE HARNESS OR CONNECTOR 4 READ DS-II DATA (INSPECT WIRE HARNESS SHORT CIRCUIT) (a) (b) (c) Disconnect the intake air temperature sensor connector. Turn the ignition switch to the ON position. Read the intake air temperature displayed on the DS-II. Standard: -40°C OK NG REPLACE SENSOR INTAKE AIR TEMPERATURE ES–34 5 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) CHECK WIRE HARNESS TEMPERATURE SENSOR) AND CONNECTOR (a) Engine Control Computer (b) ES E2 (ENGINE CONTROL 55(THA) ←→ 1(+) Inlet Air Temperature Sensor Vehicle Side Connector 19(E2) ←→ 2(-) NG (+) INTAKE Disconnect the engine control computer connector B and the intake air temperature sensor connector. Using a tester, check whether there is continuity or a short between the engine control computer vehicle side connector and the intake air temperature sensor vehicle side connector.(For terminal layout, see page ES - 16.) Standard Tester Connection (Terminal Symbol) Engine control computer ←→ Inlet air temperature sensor THA COMPUTER Standard There is continuity and no shorts between other terminals and body ground There is continuity, and no short between other terminals REPAIR OR REPLACE WIRE HARNESS OR CONNECTOR (-) A133550J01 OK CHECK AND REPLACE ENGINE CONTROL COMPUTER ES–35 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) DTC P0115/42 COOLANT TEMPERATURE SENSOR SIGNAL SYSTEM DESCRIPTION The resistance of the thermistor built into the coolant temperature sensor varies according to the coolant temperature. DTC No. DTC Detection Condition 1. Diagnosis Condition 2. Malfunction Condition 3. Malfunction Time 4. Other P0115/22 1. 2. 3. 4. Suspected Area IG ON Open or short in coolant temperature circuit 0.5 seconds or more 1 trip • • • ES Wire harness or connector Coolant temperature Engine control computer CIRCUIT DIAGRAM Engine Control Computer Coolant Temperature 2 54 1 19 THW E2 G100102J25 INSPECTION PROCEDURE HINT: • Read the freeze frame data using the DS-II.Freeze frame data records aspects of the engine's condition when malfunctions occur. This information is helpful when troubleshooting. 1 READ DS-II DATA (COOLANT TEMPERATURE) (a) (b) Connect the DS-II to the DLC. Read the engine coolant temperature displayed on the DS-II while the ignition switch is turned to the ON position and the engine is stopped. Result Tester Display Proceed to 140 °C A Equivalent to actual coolant temperature C -40 °C B B GO TO STEP 4 ES–36 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) C CHECK FOR INTERMITTENT PROBLEMS A 2 READ DS-II DATA (INSPECT WIRE HARNESS OPEN CIRCUIT) (a) (b) Coolant Temperature Vehicle Side Connector ES (c) (d) (e) (-) (+) A075082J04 SST 09843-18020 Disconnect the connector of the coolant temperature sensor. Short the circuit between terminals 2 (+) and 1 (-) of the water temperature vehicle side connector using the SST (diagnosis check wire No.2). Connect the DS-II to the DLC. Turn the ignition switch to the ON position. Read the engine coolant temperature displayed on the DS-II. Standard: 140°C OK REPLACE SENSOR COOLANT TEMPERATURE NG 3 READ DS-II DATA (CHECK FOR OPEN IN ENGINE CONTROL COMPUTER) SST 09843-18020 Short the circuit between terminals 54 (THW) and 19 (E2) of the engine control computer using the SST (diagnosis check wire No.2).(For terminal layout, see page ES - 16.) (b) Read the engine coolant temperature displayed on the DS-II. Standard: 140°C (a) Engine Control Computer NG E2 THW CHECK AND REPLACE ENGINE CONTROL COMPUTER A133549J02 OK REPAIR OR REPLACE WIRE HARNESS OR CONNECTOR 4 READ DS-II DATA (INSPECT WIRE HARNESS SHORT CIRCUIT) (a) (b) (c) Disconnect the connector of the coolant temperature sensor. Turn the ignition switch to the ON position. Read the engine coolant temperature displayed on the DS-II. Standard: -40°C OK REPLACE SENSOR COOLANT TEMPERATURE ES–37 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) NG 5 CHECK WIRE HARNESS AND CONNECTOR (ENGINE CONTROL COMPUTER COOLANT TEMPERATURE) (a) (b) Engine Control Computer E2 Disconnect connector B of the engine control computer and the connector of the coolant temperature sensor. Using a tester, check whether there is continuity or a short between the vehicle side connector or the engine control computer and the vehicle side connector of the coolant temperature sensor.(For terminal layout, see page ES - 16.) Standard Tester Connection (Terminal Symbol) Engine control computer ←→ Coolant temperature THW 54(THW) ←→ 2(+) E.F.I. Coolant Temperature Vehicle Side Connector 19(E2) ←→ 1(-) NG (-) (+) Standard There is continuity and no short between other terminals and body ground There is continuity, and no short between other terminals REPAIR OR REPLACE WIRE HARNESS OR CONNECTOR A133552J01 OK CHECK AND REPLACE ENGINE CONTROL COMPUTER ES ES–38 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) DTC P0120/41 THROTTLE SENSOR SIGNAL SYSTEM DESCRIPTION The throttle position sensor is mounted on the throttle body to detect the opening angle of the throttle valve. When the throttle valve is fully closed, voltage of approximately 0.7 V is applied to the VTH terminal of the engine control computer.The voltage that is applied to the VTH terminal of the engine control computer increases in proportion to the opening angle of the throttle valve, and the voltage increases from approximately 3.5 V to 5.0 V when the throttle valve is fully opened.The engine control computer determines the operating condition of the vehicle by the voltage input from the VTH terminal, and adjusts the air-fuel ratio, performs fuel-cut control, etc. ES Throttle Position Sensor Engine Control Computer VC 5V VTH E2 A133572 DTC No. P0120/41 DTC Detection Condition 1.Diagnosis Condition 2.Malfunction Condition 3.Malfunction Time 4.Other 1. IG ON 2. Open or short circuit in throttle position sensor circuit 3. 0.5 seconds or more 4. 1 trip Trouble Area • • • Throttle position sensor Wire harness or connector Engine control computer ES–39 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) CIRCUIT DIAGRAM Engine Control Computer Throttle Position Sensor 1 B16 56 3 B13 53 2 B6 19 ES VC VTH E2 A133553J01 INSPECTION PROCEDURE HINT: • Read the freeze frame data using the DS-II. Freeze frame data records aspects of the engine's condition when malfunctions occur. This information is helpful when troubleshooting. 1 READ DS-II DATA (ABSOLUTE THROTTLE OPENING ANGLE) (a) (b) Connect the DS-II to the DLC. Read the opening angle of the throttle valve. Result OK FI07052 NG Throttle Valve Standard Fully open 64-96% Fully Closed 10-24% CHECK FOR INTERMITTENT PROBLEMS ES–40 2 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) CHECK WIRE HARNESS OR CONNECTOR (CHECK VOLTAGE) (a) (b) (c) Throttle Position Sensor Vehicle Side Connector Disconnect the connector of the throttle position sensor. Turn the ignition switch to the ON position. Using a tester, measure the voltage between terminal 1(VC) and 2 (E2) of the vehicle side connector of the throttle position sensor. Standard: 4.5 to 5.5 V NG ES GO TO STEP 6 E2 VC A133554J01 OK 3 INSPECT THROTTLE POSITION SENSOR (a) (b) Throttle Position Sensor 3 2 1 Disconnect the connector of the throttle position sensor. Using a tester, measure the resistance between the connector terminals of the throttle position sensor. Standard Tester Connection (Terminal Symbol) Throttle Valve Resistance 1 (VC) to 3 (VTH) - 2.5 to 5.9 k 3 (VTH) to 2 (E2) Fully closed 0.2 to 5.7 k 3 (VTH) to 2 (E2) Fully open 2.0 to 10.2 k VC VTH E2 A133573J01 NG REPLACE THROTTLE POSITION SENSOR OK 4 INSPECT ENGINE CONTROL COMPUTER SST 09842-97209 (a) Connect the SST (sub harness, EFI computer check) to the engine control computer. (b) Turn the ignition switch to the ON position. (c) Using a tester, measure the voltage between terminal 53 (VTH) and 19 (E2) of the engine control computer connector.(For terminal layout, see page ES - 16.) Standard Engine Control Computer E2 Throttle Valve Standard Fully closed 0.3 to 1.0 (V) Fully open 2.7 to 5.2 (V) VTH A133549J03 OK CHECK AND REPLACE ENGINE CONTROL COMPUTER ES–41 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) NG 5 CHECK WIRE HARNESS AND CONNECTOR (ENGINE CONTROL COMPUTER THROTTLE POSITION SENSOR) (a) (b) Engine Control Computer Disconnect the engine control computer connector B and the throttle position sensor connector. Using a tester, check whether there is continuity or a short between the engine control computer vehicle side connector and the throttle position sensor vehicle side connector.(For terminal layout, see page ES - 16.) Standard Inspection Terminal (Terminal Name) Engine control computer ←→ Throttle position sensor 53 (VTH) ←→ 3 (VTH) VTH NG Throttle Position Sensor Vehicle Side Connector Standard There is continuity and no short between other terminals and body ground REPAIR OR REPLACE WIRE HARNESS OR CONNECTOR VTH A133574J01 OK CHECK AND REPLACE ENGINE CONTROL COMPUTER 6 INSPECT ENGINE CONTROL COMPUTER SST 09842-97209 Connect the SST (sub harness, EFI computer check) to the engine control computer. (b) Turn the ignition switch to the ON position. (c) Using a tester, measure the voltage between terminals 56 (VC) and 19 (E2) of the engine control computer connector. (For terminal layout, see page ES - 16.) Standard: 4.5 to 5.5 V (a) Engine Control Computer NG E2 VC A133549J04 CHECK AND REPLACE ENGINE CONTROL COMPUTER ES ES–42 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) OK 7 CHECK WIRE HARNESS AND CONNECTOR (ENGINE CONTROL COMPUTER THROTTLE POSITION SENSOR) (a) (b) Engine Control Computer ES Disconnect the engine control computer connector B and the throttle position sensor connector. Using a tester, check whether there is continuity or a short between the engine control computer vehicle side connector and the throttle position sensor vehicle side connector.(For terminal layout, see page ES - 16.) Standard Inspection Terminal (Terminal Name) Engine control computer ←→ Throttle position sensor E2 56 (VC) ←→ 1 (VC) VC 19 (E2) ←→ 2 (E2) Throttle Position Sensor Vehicle Side Connector OK VC Standard There is continuity and no short between other terminals and body ground There is continuity, and no short between other terminals CHECK AND REPLACE ENGINE CONTROL COMPUTER E2 A133574J03 NG REPAIR OR REPLACE WIRE HARNESS OR CONNECTOR ES–43 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) DTC P0130/21 FRONT 02 SENSOR SIGNAL SYSTEM DESCRIPTION A three-way catalytic converter is used to efficiently remove CO, HC and NOx from the exhaust gas. The three-way catalytic converter works most efficiently when the air-fuel ratio is close to the stoichiometric ratio.Therefore, if the engine does not operate close to the stoichiometric air-fuel ratio. CO, HC and NOx cannot be converted efficiently. An oxygen sensor is provided in order help the system maintain the stoichiometric ratio. The oxygen sensor is used to detect the oxygen concentration of the exhaust gas. The oxygen sensor has a characteristic where its voltage output changes suddenly near the stoichiometric air-fuel ratio, if normal combustion is occurring. The engine control computer uses this signal characteristic to allow air-fuel ratio control. When the air-fuel ratio is lean, the oxygen level in the exhaust gas increases. The engine control computer recognizes the lean air-fuel ratio detected by the oxygen sensor. (Low voltage variation: < 0.45 V) When the air-fuel ratio is rich, oxygen levels in the exhaust gas decrease, and the engine control computer recognizes the rich air-fuel ratio detected by the oxygen sensor. (High voltage variation: > 0.45 V) The engine control computer determines whether the air-fuel ratio is rich or lean by the electromotive force signal of the oxygen sensor, and controls injection volume. The oxygen sensor has a heater which warms a zirconium element. The heater is controlled by the engine control computer, which applies current to the heater in order to prevent sensor inaccuracy that may occur if the sensor gets cold when the exhaust gas temperature is low (such as when there is a low amount of intake air). Atmosphere Output Voltage Air-Fuel Ratio Housing Platinum Electrode Zirconia Element Platinum Electrode Heater Lean Rich Stoichiometric Air-Fuel Ratio Ceramic Coating Cover Exhaust Gas DTC Detection Condition 1.Diagnosis Condition 2.Malfunction Condition 3.Malfunction Time 4.Other DTC No. P0130/21 A069512 1. Engine warmed up and engine speed lower than 2,500 r/min 2. Steady oxygen sensor output voltage of less than 0.3 V or more than 0.6 V 3. 400 seconds or more after engine started 4. 2 trip Suspected Area • • • Wire harness or connector Oxygen sensor Engine control computer HINT: Using the DS-II, check the FrO2 sensor output voltage on the data monitor screen. If the FrO2 sensor output voltage stays at 0.02 V or less, the O2 sensor voltage system circuit may be open. DESCRIPTION 1. Start the engine and drive the vehicle for more than 20 seconds at speed above 10 km/h.[*1] 2. Allow the engine to idle for approximately 400 seconds.[*2] 3. Check the voltage of the FrO2 sensor output. NOTICE: If this test is not performed accurately, it will be impossible to determine exactly where problems are occurring. ES ES–44 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) HINT: If there are any abnormalities, the check warning light will remain on while the procedure is performed. [*2]. Vehicle Speed More Than 20 Sec.[*1] 10 km/h ES IG OFF Idling More Than 400 Sec. [*2] A140624J01 CIRCUIT DIAGRAM Engine Control Computer EFI Relay EFI C8 MRO Front O2 Sensor 2 1 B2 3 B30 OXH1 MAIN 4 OX1 Rear O2 Sensor 2 Battery 4 1 3 B1 B5 B6 OXH2 OX2 E2 A135516 ES–45 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) INSPECTION PROCEDURE HINT: Read the freeze frame data using the DS-II.Freeze frame data records aspects of the engine's condition when malfunctions occur. This information is helpful when troubleshooting. 1 READ DS-II DATA (FrO2 SENSOR OUTPUT VOLTAGE) (a) (b) Connect the DS-II to the DLC. Start the engine and warm it up until it reaches a temperature that allows the oxygen sensor to start feedback. (c) Warm up the oxygen sensor for approximately 90 seconds at an engine speed of 2500 r/min. (d) Using the DS-II, read FrO2 sensor voltage B1S1 while the engine is idling. Result: Repeated output of voltage that is less than 0.3 V or more than 0.6 V. HINT: • It is easier to see the changes in the line graph mode on the monitor screen. OK GO TO STEP 3 NG 2 CHECK WIRE HARNESS AND CONNECTOR (ENGINE CONTROL COMPUTER OXYGEN SENSOR) (a) Engine Control Computer (b) Disconnect the engine control computer connector B and the oxygen sensor connector. Using a tester, check whether there is continuity or a short between the engine control computer and the oxygen sensor (For terminal layout, see page ES - 16). Standard Tester Connection (Terminal Symbol) Engine control computer ←→ Oxygen sensor E2 OX1 123 (OX1) ←→ 3 (OX1) 19 (E2) ←→ 4 (E2) Oxygen Sensor Vehicle Side Connector NG OX1 E2 A133576J04 OK REPLACE OXYGEN SENSOR Standard There is continuity and no short between other terminals and body ground There is continuity, and no short between other terminals REPAIR OR REPLACE WIRE HARNESS OR CONNECTOR ES ES–46 3 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) ROAD TEST TO CHECK OPERATION (a) (b) (c) ES Connect the DS-II to the DLC. Turn the ignition switch to the ON position, and delete the DTCs by following the prompts on the DS-II screen. To check the system, warm up the oxygen sensor by performing a road test. HINT: Refer to DESCRIPTION for the procedure. NEXT 4 READ DTCS (a) (b) Connect the DS-II to the DLC. Turn the ignition switch to the ON position, and read the DTCs by following the prompts on the DS-II screen. (1) Check if DTC P0130/21 is indicated. Result Tester Display Proceed to Indicates P0130/21 A Indicates a normal code B B CHECK FOR INTERMITTENT PROBLEMS A CHECK AND REPLACE ENGINE CONTROL COMPUTER ES–47 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) DTC P0135/23 FRONT 02 SENSOR HEATER SIGNAL SYSTEM DTC P0141/24 REAR 02 SENSOR HEATER DESCRIPTION See ES - 43. DTC Detection Condition 1.Diagnosis Condition 2.Malfunction Condition 3.Malfunction Time 4.Other DTC No. Suspected Area ES P0135/23 1. 2. 3. 4. IG ON Open in oxygen sensor heater circuit 1.2 seconds or more 2 trip • • • Wire harness or connector Oxygen sensor Engine control computer P0141/24 1. 2. 3. 4. IG ON Open in oxygen sensor No.2 heater circuit 1.2 seconds or more 2 trip • • • Wire harness or connector OXYGEN SENSOR NO.2 Engine control computer CIRCUIT DIAGRAM HINT: For the wiring diagram, see page ES - 44. INSPECTION PROCEDURE HINT: Read the freeze frame data using the DS-II.Freeze frame data records aspects of the engine's condition when malfunctions occur. This information is helpful when troubleshooting. 1 INSPECT OXYGEN SENSOR +B Front Rear O2 Sensor HT1A HT2A 2 (a) (b) Disconnect the oxygen sensor connector. CHECK SENSOR HEATER RESISTANCE (1) Using a tester, measure the resistance between the terminals. Standard 1 Sensor 4 Oxygen sensor 3 Oxygen sensor No.2 (c) E2 A133577J02 Tester Connection (Terminal Symbol) Standard (Measurement Condition) 2 (+B) ←→ 1 (HT2A) 5 to 10 (20°C) 2 (+B) ←→ 1 (HT1A) 5 to 10 (20°C) Check short in sensor heater (1) Using the tester, check for the short between terminals 1 (HT1A) and 4 (E2). Standard Sensor Oxygen sensor Oxygen sensor No.2 NG Tester Connection (Terminal Symbol) 1 (HT1A) ←→ 4 (E2) 1 (HT2A) ←→ 4 (E2) REPLACE OXYGEN SENSOR Standard No continuity No continuity ES–48 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) OK 2 CHECK WIRE HARNESS AND CONNECTOR (SENSOR HEATER POWER SOURCE CIRCUIT) (a) (b) (c) Oxygen Sensor Vehicle Side Connector +B ES Disconnect the oxygen sensor connector. Turn the ignition switch to the ON position. Using a tester, measure the voltage of the terminals of the oxygen sensor vehicle side connecter. Standard Installed position Front, rear A133578J01 NG Tester Connection (Terminal Symbol) 2 (+B) ←→ body ground Standard 10 to 14 V GO TO STEP 4 OK 3 CHECK WIRE HARNESS AND CONNECTOR (ENGINE CONTROL COMPUTER OXYGEN SENSOR) (a) Engine Control Computer (b) Disconnect the engine control computer connector B and the oxygen sensor connector. Using a tester, check whether there is continuity or a short between the engine control computer and the oxygen sensor. (For terminal layout, see page ES - 16.) Standard Tester Connection (Terminal Symbol) Engine control computer ←→ Oxygen sensor OXH1 OXH2 02 Sensor Vehicle Side Connector HT1A HT2A NG Standard 15 (OXH1) ←→ 1 (HT1A) There is continuity and no short between other terminals and body ground 14 (OXH2) ←→ 1 (HT2A) There is continuity and no short between other terminals and body ground REPAIR OR REPLACE WIRE HARNESS OR CONNECTOR A133576J03 OK CHECK AND REPLACE ENGINE CONTROL COMPUTER 4 CHECK WIRE HARNESS AND CONNECTOR (OXYGEN SENSOR EFI RELAY) (a) Disconnect the oxygen sensor connector. ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) (b) (c) Oxygen Sensor Vehicle Side Connector +B ES–49 Remove the EFI relay. Using a tester, check whether there is continuity or a short between the relay block holder for the EFI relay and the oxygen sensor. Standard Installed position Front, rear NG Tester Connection (Terminal Symbol) Relay block holder for EFI relay ←→ Oxygen sensor 4 ←→ 3 (+B) Standard There is continuity and no short between other terminals and body ground REPAIR OR REPLACE WIRE HARNESS OR CONNECTOR 2 5 3 1 A133579J01 OK CHECK ECU POWER SOURCE SYSTEM (SEE ECU POWER SOURCE SYSTEM) ES ES–50 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) DTC P0136/22 REAR 02 SENSOR SIGNAL SYSTEM DESCRIPTION (See Page ES - 43) DTC Detection Condition 1.Diagnosis Condition 2.Malfunction Condition 3.Malfunction Time 4.Other DTC No. ES P0136/27 Suspected Area 1. During feedback after engine is warmed up 2. Open in oxygen sensor circuit or no rich signals are input during feedback 3. 500 seconds or more 4. 2 trip • • • Wire harness or connector Oxygen sensor No.2 Engine control computer HINT: • Using the DS-II, check the RrO2 sensor output voltage on the data monitor screen. If the RrO2 sensor output voltage stays at 0.1 V or less, there be an open in the RrO2 sensor voltage circuit. • The conditions of the oxygen sensor No.2 output voltage and the air-fuel ratio feedback (F/B calibration value) can be read by using DS-II. DESCRIPTION 1. Start the engine and drive the vehicle for more than 20 seconds at speed above 10 km/h.[*1] 2. Allow the engine to idle for approximately 400 seconds.[*2] 3. Warm up the engine. [*3] 4. Drive the vehicle for 50 seconds or more at a vehicle speed of 70 km/h or more. [*4] 5. Check the voltage of the RrO2 sensor output. NOTICE: If this test is not performed accurately, it will be impossible to determine exactly where problems are occurring. HINT: • Because oxygen sensor No.2 does not have heater control, drive with a moderate level of load after the engine is completely warmed up. • If there are any abnormalities, the check engine warning light will remain on while the procedure is performed. [*4]. Vehicle Speed More Than 50 Sec. [*4] 70 km/h More Than 20 Sec. [*1] 10 km/h IG OFF Idling More Than 400 Sec. [*2] Driving With The Engine Warm [*3] A140625J01 CIRCUIT DIAGRAM (See Page ES - 44) ES–51 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) INSPECTION PROCEDURE HINT: Read the freeze frame data using the DS-II.Freeze frame data records aspects of the engine's condition when malfunctions occur. This information is helpful whnen troubleshooting. 1 READ DTCs (a) (b) (c) (d) Connect the DS-II to the DLC. Turn the ignition switch to the ON position, and delete the DTCs by following the prompts on the DS-II screen.(See page ES - 8.) Perform a road test. Check for DTCs following the prompts on the DS-II screen. (See page ES - 8.) (1) Check if DTC P0136/27 is indicated. Result Tester Display Proceed to Indicates P0136/27 A Indicates P036/27 and other codes B Indicates a normal code C HINT: If DTC P0136/27 and other DTCs are output at the same time, check the other codes first. A B GO TO RELEVANT DTC CHART C CHECK FOR INTERMITTENT PROBLEMS ES ES–52 2 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) CHECK WIRE HARNESS AND CONNECTOR (ENGINE CONTROL COMPUTER OXYGEN SENSOR NO.2) (a) Engine Control Computer (b) ES Disconnect the engine control computer connector B and the oxygen sensor No.2 connector. Using a tester, check whether there is continuity or a short between the engine control computer and oxygen sensor No.2. (For terminal layout, see page ES - 16.) Standard Tester Connection (Terminal Symbol) Engine Control Computer ←→ Oxygen Sensor No.2 E2 18 (O2X2) ←→ 1 (+) OX2 19(E2) ←→ 2(-) Rear O2 Sensor Vehicle Side Connector NG 1 2 (+) Standard There is continuity and no short between other terminals and body ground There is continuity, and no short between other terminals REPAIR OR REPLACE WIRE HARNESS OR CONNECTOR (-) A133580J01 OK 3 READ DS-II DATA (RrO2 SENSOR OUTPUT VOLTAGE) (a) (b) (c) (d) Connect the DS-II to the DLC. Following the prompts on the DS-II screen, select ECU DATA MONITOR, then RrO2 SENSOR OUTPUT VOLTAGE. Then select MODE CHANGE and LINE GRAPH. Warm up oxygen sensor No.2 for approximately 90 seconds at an engine speed of 2500 r/min. Read the voltage of the RrO2 sensor output while racing the engine at a speed of 4000 r/min several times. Result: Voltage output is 0.4 V or less and 0.5 V or more HINT: • Oxygen sensor No.2 does not have a heater control, so perform the tests after the engine is completely warm. • If changes are difficult to see, perform a road test.(See DESCRIPTION.) NG OK REPLACE ENGINE CONTROL COMPUTER REPLACE OXYGEN SENSOR NO.2 ES–53 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) DTC P0171/25 FUEL SYSTEM (LEAN MALFUNCTION) DTC P0172/26 FUEL SYSTEM (RICH MALFUNCTION) DESCRIPTION There are two types of air-fuel ratio corrections. One is the normal operating air-fuel ratio correction (air-fuel ratio F/B). The other is the memory air-fuel ratio correction (air-fuel ratio F/B learned). Air-fuel ratio F/B is the air-fuel ratio correction that is used to maintain a stoichiometric ratio. The oxygen sensors send signals to the engine control computer indicating whether the current air-fuel ratio is rich or lean comparing to the stoichiometric ratio. When the signal indicates that the condition is rich the injection volume is decreased. When the signal indicates that the condition is lean the injection volume is increased. Air-fuel ratio F/B learned value refers to a value that shows the air-fuel ratio F/B value over a long period of time. Because of differences specific to each engine (such as differences caused by wear over time and changes in the operating environment) this air-fuel ratio F/B learned value varies from a central value.If either the air-fuel ratio F/B value or the air-fuel ratio F/B learned value exceeds a certain value and becomes lean or rich, the engine control computer illuminates the check warning light. DTC Detection Condition 1.Diagnosis Condition 2.Malfunction Condition 3.Malfunction Time 4.Other DTC No. Suspected Area P0171/25 1. While operating the vehicle at 70 km/h with the engine warm, during a normal air-fuel ratio F/B 2. Fuel trim is corrected heavily on the increase side (approx.+ 40 %) 3. 60 seconds or more 4. 2 trip • • • • • • • Intake system Fuel system Ignition system Wire harness or connector Oxygen sensor Engine control computer Gas leakage from exhaust system P0172/26 1. While operating the vehicle at 70 km/h with the engine warm, during a normal air-fuel ratio F/B 2. Fuel trim is corrected heavily on the decrease side (approx.+ -35%) 3. 60 seconds or more 4. 2 trip • • • • • • • Intake system Fuel system Ignition system Wire harness or connector Oxygen sensor Engine control computer Gas leakage from exhaust system HINT: If the total of the air-fuel F/B value and the air-fuel F/B learned value is within 25%, the system is normal. CIRCUIT DIAGRAM See Page ES - 44. INSPECTION PROCEDURE HINT: • Check if the engine has stopped in the past because of a fuel cut.If so, the DTC P0171/25 may be recorded. • Read the freeze frame data using the DS-II.Freeze frame data records aspects of the engine's condition when malfunctions occur. This information is helpful when troubleshooting. 1 INSPECT EMISSION CONTROL SYSTEM HINT: For inspection procedures, see page EC - 1. NG REPAIR OR REPLACE EMISSION CONTROL SYSTEM ES ES–54 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) OK 2 INSPECT FUEL INJECTOR ASSEMBLY SST 09843-97201, O9268-41047 Check the resistance. (1) Using the tester, measure the resistance between the injector terminals. Resistance: 12 (20°C) HINT: If the value is not within the standard range, replace with a known-good part. (b) Fuel injection volume NOTICE: Work in a location with good air ventilation and watch out for fire. (1) Connect the SST (injection measuring tool set) to the fuel pipe (vehicle side). NOTICE: Be extremely careful when handling the fuel tube connector. (2) Attach the injector to a graduated cylinder. HINT: To prevent fuel from spraying, install the correct-sized vinyl tube, etc. (3) Connect the DS-II to the DLC and operate the fuel pump. (4) Connect the injector to the SST (EFI inspection wire). (5) Connect the SST (EFI inspection wire) to the battery, perform fuel injection (15 seconds each) 2 or 3 times, and calculate the average value. SST: 09842-30055 Standard (a) ES A Injector B Fuel Pipe A139327 (c) Difference Between Individual Injectors 60 to 73ml 13 ml or less HINT: If the value is not within the standard range, replace with known-good parts. Check for leakage. (1) When removing the SST from the battery under the conditions described above, check that there is no leakage from the injector. Standard: 1 drop or less per 12 minutes NG B000069 Injection Volume REPLACE FUEL INJECTOR ASSEMBLY ES–55 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) OK 3 CHECK COOLANT TEMPERATURE (a) Check the resistance. (1) Using the tester, inspect the resistance between the terminals. Standard Measurement Condition Standard When approx. 20°C 2.32 to 2.59 kΩ When approx. 80°C 0.310 to 0.326 kΩ ES NOTICE: Protect the terminal area from getting wet when checking the sensor by applying water.Also, wipe the sensor dry after the check. NG Resistance REPLACE SENSOR COOLANT TEMPERATURE [kΩ] Temperature [°C] A050330 OK 4 INSPECT THE IGNITION SYSTEM HINT: For inspection procedures, see page IG - 1. NG REPAIR OR REPLACE IGNITION SYSTEM OK 5 CHECK FUEL SYSTEM HINT: For inspection procedures, see page FU - 3. NG REPAIR OR REPLACE FUEL SYSTEM NG REPAIR OR REPLACE LEAKAGE AREA OK 6 CHECK FOR EXHAUST GAS LEAKS EXHAUST GAS ES–56 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) OK 7 READ DS-II DATA (FrO2 SENSOR OUTPUT VOLTAGE) (a) (b) ES Warm up the oxygen sensor for approx. 90 seconds at an engine speed of 2500 r/min. Using the DS-II, read the output voltage of the oxygen sensor while the engine is idling. Standard: Repeated output of voltage that is less than 0.3 V or more than 0.6 V OK GO TO STEP 9 NG 8 CHECK WIRE HARNESS AND CONNECTOR (ENGINE CONTROL COMPUTER OXYGEN SENSOR) (a) (b) (c) Engine Control Computer Disconnect connector B of the engine control computer. Disconnect the connector of the oxygen sensor. Using a tester, check whether there is continuity or a short between the engine control computer and the oxygen sensor connector.(For terminal layout, see page ES - 16.) Standard Tester Connection (Terminal Symbol) Engine Control Computer ←→ Oxygen Sensor 123 (OX1) ←→ 3 (OX1) OX1 Front O2 Sensor Vehicle Side Connector Standard There is continuity and no short between other terminals and body ground OK REPLACE OXYGEN SENSOR NG REPAIR OR REPLACE WIRE HARNESS OR CONNECTOR OX1 A133576J02 9 ROAD TEST TO CHECK OPERATION (a) (b) (c) Connect the DS-II to the DLC. Turn the ignition switch to the ON position, and delete the DTCs by following the prompts on the DS-II screen. To check the system, warm up the oxygen sensor by performing a road test. HINT: Refer to the oxygen sensor output voltage inspection procedure. ES–57 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) GO 10 READ DTCs (a) (b) Connect the DS-II to the DLC. Turn the ignition switch to the ON position, and read the DTC by following the prompts on the DS-II screen. (1) Check if DTC P0171/25 is detected. Result A B P0171/25 is not output again P0171/25 is output again B A CHECK FOR INTERMITTENT PROBLEMS CHECK AND REPLACE ENGINE CONTROL COMPUTER ES ES–58 ES ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) DTC P0300/17 MISFIRE DTC P0301/17 MISFIRE (#1 CYLINDER) DTC P0302/17 MISFIRE (#2 CYLINDER) DTC P0303/17 MISFIRE (#3 CYLINDER) DTC P0304/17 MISFIRE (#4 CYLINDER) DESCRIPTION The igniter detects ionic current that is generated by combustion. This ionic current is represented by ionic voltage and input to the engine control computer.If the voltage is lower than the specified value, the engine control computer determines that there has been a misfire and counts the number of detected misfires. If the number of misfires reaches or exceeds a specified value, the engine check warning light illuminates to indicate a problem. If the number of misfires reaches or exceeds the point at which the catalyst may overheat, the engine check warning light flashes. DTC No. DTC Detection Condition 1.Diagnosis Condition 2.Malfunction Condition 3.Malfunction Time 4.Other Suspected Area P0300/17 1. When driving at vehicle speed of 30 to 70 km/h 2. DTCs P0301/17 through P0304/17 are output repeatedly 3. 60 seconds or more 4. 2 trip • • • • • • • Ignition system Intake system Fuel system Wire harness or connector Coolant temperature Engine control computer Fuel injector P0301/17 1. When driving at vehicle speed of 30 to 70 km/h 2. Rate of misfires is higher than the set value 3. 60 seconds or more 4. 2 trip • • • • • • • Ignition system Intake system Fuel system Wire harness or connector Coolant temperature Engine control computer Fuel injector P0302/17 1. When driving at vehicle speed of 30 to 70 km/h 2. Rate of misfires is higher than the set value 3. 60 seconds or more 4. 2 trip • • • • • • • Ignition system Intake system Fuel system Wire harness or connector Coolant temperature Engine control computer Fuel injector P0303/17 1. When driving at vehicle speed of 30 to 70 km/h 2. Rate of misfires is higher than the set value 3. 60 seconds or more 4. 2 trip • • • • • • • Ignition system Intake system Fuel system Wire harness or connector Coolant temperature Engine control computer Fuel injector P0304/17 1. When driving at vehicle speed of 30 to 70 km/h 2. Rate of misfires is higher than the set value 3. 60 seconds or more 4. 2 trip • • • • • • • Ignition system Intake system Fuel system Wire harness or connector Coolant temperature Engine control computer Fuel injector ES–59 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) CIRCUIT DIAGRAM Ignition Coil Assembly ( No. 1 Cylinder) To E/G Fuse Engine Control Computer 1 3 A11 4 2 B11 Injector No. 1 IG1 #10 A4 1 2 ICMB1 Ignition Coil Assembly ( No. 2 Cylinder) Injector No. 2 1 3 A10 4 2 B10 #20 IG2 A3 ES 1 2 ICMB2 Injector No. 3 Ignition Coil Assembly ( No. 3 Cylinder) 1 4 #30 3 A9 2 B9 ICMB3 Injector No. 4 #40 3 A8 4 2 B8 1 2 IG3 Ignition Coil Assembly ( No. 4 Cylinder) 1 A2 A1 2 1 IG4 ICMB4 To EFI Relay A135528 INSPECTION PROCEDURE HINT: • If any codes are detected other than misfire malfunction, perform troubleshooting for those DTCs first. • Read the freeze frame data using the DS-II.Freeze frame data records aspects of the engine's condition when malfunctions occur. This information is helpful when troubleshooting. • To confirm that the repair has been completed, operate the vehicle using one of the driving patterns shown below. Driving patterns Engine speed Time Idle 3 and a half minutes or more 1000 r/min 3 minutes or more 2000 r/min 1 and a half minutes or more 3000 r/min 1 minute or more 1 INSPECT THE IGNITION SYSTEM (See page IG - 1) NG OK REPAIR OR REPLACE IGNITION SYSTEM ES–60 2 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) CHECK FUEL PRESSURE (See page FU - 3) NG REPAIR OR REPLACE FUEL SYSTEM OK ES 3 CHECK COOLANT TEMPERATURE (a) Check the resistance. (1) Using the tester, inspect the resistance between the terminals. Standard: At approx. 20°C : 2.32 to 2.59 kΩ At approx. 80°C : 0.310 to 0.326 kΩ NOTICE: Protect the terminal area from getting wet when checking the sensor by applying water. Also, wipe the sensor dry after the check. NG REPLACE SENSOR COOLANT TEMPERATURE Resistance [kΩ] Temperature [°C] A050330 OK 4 INSPECT FUEL INJECTOR ASSEMBLY SST 09843-97201, O9268-41047 Check the resistance. (1) Using the tester, measure the resistance between the injector terminals. Standard: 12 Ω (20°C) HINT: If the value is not within the standard range, replace with known-good parts. (b) CHECK INJECTION VOLUME NOTICE: Work in a location with good air ventilation and watch out for fire. (1) Connect the SST (injection measuring tool set) to the fuel pipe (vehicle side). (a) ES–61 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) (2) (3) (4) (5) A Injector B Fuel Pipe A139327 (c) NOTICE: Be extremely careful when handling the fuel tube connector. Attach the injector to a graduated cylinder. HINT: To prevent fuel from spraying, install the correct-sized vinyl tube, etc. Connect the DS-II to the DLC and operate the fuel pump. Connect the injector to the SST (EFI inspection wire). Connect the SST (EFI inspection wire) to the battery, perform fuel injection (15 seconds each) 2 or 3 times, and calculate the average value. Standard Injection Volume Difference Between Individual Injectors 60 to 73 ml 13ml or less HINT: If the value is not within the standard range, replace with known-good parts. Check for leakage. (1) When removing the SST from the battery under the conditions described above, check that there is no leakage from the injector. Standard: 1 drop or less per 12 minutes NG REPLACE FUEL INJECTOR ASSEMBLY B000069 OK 5 CHECK VACUUM SENSOR (a) (b) Intake Pressure Sensor 1 2 Tester Connection (Terminal Symbol) Standard 2 (PIM) ←→ 1 (E2) 4.5 to 5.5 V 3 (VC) ←→ 1 (E2) 3 (c) E2 PIM Turn the ignition switch to the ON position. Measure the voltage between the terminals of the vacuum sensor connecter using the tester. Standard VC A133547J01 Remove the fuel pump relay and crank the engine, then measure the voltage between the terminals of the vacuum sensor connector. Standard Tester Connection (Terminal Symbol) 2 (PIM) ←→ 1 (E2) NG OK 3.1 to 4.1V Standard Voltage value fluctuates REPLACE THE VACUUM SENSOR ES ES–62 6 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) CHECK WIRE HARNESS AND CONNECTOR (a) (b) Disconnect connector A of the engine control computer and disconnect the connectors of each fuel injector. Using a tester, check whether there is continuity or a short between the engine control computer vehicle side connector and the fuel injector vehicle side connector. Standard Installed position ES #1 Cylinder #2 Cylinder #3 Cylinder #4 Cylinder NG Terminal Connection (Terminal Symbol) Standard 2←→24(#10) There is continuity and no short between other terminals and body ground 2←→23(#20) There is continuity and no short between other terminals and body ground 2←→22(#30) There is continuity and no short between other terminals and body ground 2←→21(#40) There is continuity and no short between other terminals and body ground REPAIR OR REPLACE WIRE HARNESS OR CONNECTOR OK CHECK AND REPLACE ENGINE CONTROL COMPUTER ES–63 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) DTC P0325/18 KNOCK SENSOR SIGNAL SYSTEM DESCRIPTION The knock control sensor is mounted to the cylinder block to detect engine knocking.Inside the knock control sensor, there is a sensing element. When the sensing element is deformed due to the cylinder block vibration caused by knocking, it generates electricity. When the engine computer senses this voltage, it retards the ignition timing to control the knocking. DTC Detection Condition 1.Diagnosis Condition 2.Malfunction Condition 3.Malfunction Time 4.Other DTC No. P0325/52 1. 2. 3. 4. Suspected Area IG ON Open or short in knock control sensor circuit 0.9 seconds or more 1 trip • • • • Wire harness or connector Knock control sensor Installation tightness of knock control sensor Engine control computer CIRCUIT DIAGRAM Engine Control Computer Knock Control Sensor Shield Line 2 121 1 19 KNK E2 A133581J01 INSPECTION PROCEDURE HINT: Read the freeze frame data using the DS-II.Freeze frame data records aspects of the engine's condition when malfunctions occur. This information is helpful when troubleshooting. ES ES–64 1 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) INSPECT ENGINE CONTROL COMPUTER HINT: The communication between the engine control computer and the knock control sensors can be checked using the oscilloscope function of the DSII. (a) Connect the DS-II to terminals 121(KNK) and 19 (E2) of the engine control computer connectors.(For terminal layout, see page ES - 16.) Engine Control Computer ES E2 KNK A133549J05 (b) Set the DS-II to the oscilloscope function.(See the DS-II instruction manual for the setting procedures.) Item Tester Connection Tool setting Measurement condition KNK ←→ E2 Condition 1 V/DIV, 1 ms/DIV Engine is warmed up and an engine speed of 4000 r/min is maintained HINT: • The oscilloscope waveform shown as an example does not include noise or chattering waveforms. • The waveform amplitudes differ slightly depending on the vehicle. A134287 OK CHECK AND REPLACE ENGINE CONTROL COMPUTER NG 2 INSPECT SENSOR INSTALLATION PART (a) Check the condition of the knock control sensor installation. NG REPAIR OR REPLACE INSTALLATION PART SENSOR OK 3 CHECK WIRE HARNESS AND CONNECTOR (ENGINE CONTROL COMPUTER KNOCK CONTROL SENSOR) (a) Disconnect the engine control computer connector B and the knock control sensor connector. ES–65 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) (b) Engine Control Computer Using a tester, check whether there is continuity or a short between the engine control computer and the knock control sensor(For terminal layout, see page ES - 16.) Standard Tester Connection (Terminal Symbol) Engine Control Computer ←→ Knock Control Sensor E2 KNK Knock Control Sensor Vehicle Side Connector NG (-) Standard 121 (KNK) ←→ 2 (+) There is continuity and no short between other terminals and body ground 19(E2) ←→ 1(-) There is continuity and no short between other terminals and body ground REPAIR OR REPLACE WIRE HARNESS OR CONNECTOR (+) A133582J01 OK 4 REPLACE KNOCK CONTROL SENSOR (a) (b) (c) (d) Replace the knock control sensor.(See page ES - 133, ES - 134.) Connect the DS-II to the DLC. Turn the ignition switch to the ON position, and delete the DTC memory by following the prompts on the DS-II screen. Perform a road test. GO 5 READ DTCs (a) (b) Connect the DS-II to the DLC. Turn the ignition switch to the ON position, and read the DTCs by following the prompts on the DS-II screen. (1) Check if DTC P0325/52 is detected. Result A B Indicates P0325/52 Does not indicate P0325/52 B SYSTEM NORMAL A CHECK AND REPLACE ENGINE CONTROL COMPUTER ES ES–66 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) DTC P0335/13 ENGINE SYSTEM REVOLUTION SENSOR SIGNAL DESCRIPTION The crank position sensor system consists of the crank angle sensor plate No.1 and the pickup coil. The crank angle sensor is installed on the crankshaft. It has 30 teeth with 6 missing teeth to allow top dead center to be detected. The NE signal sensor outputs 30 signals per engine revolution.The engine control computer detects the cylinder number and the relative position of the camshaft and angle based on the N2 signal. It detects crankshaft angle and engine speed based on the N1 signal. ES DTC Detection Condition 1.Diagnosis Condition 2.Malfunction Condition 3.Malfunction Time 4.Other DTC No. P0335/13 1. 2. 3. 4. Suspected Area • • • • Cranking N1 signal is not input 2 seconds or more 1 trip Wire harness or connector Crank position sensor Crank angle sensor plate No.1 Engine control computer CIRCUIT DIAGRAM Engine Control Computer Crankshaft Position Sensor 1 59 2 128 N1+ N1- A133583J02 INSPECTION PROCEDURE HINT: • Read the freeze frame data using the DS-II. Freeze frame data records aspects of the engine's condition when malfunctions occur. This information is helpful when troubleshooting. • If the problem is not detected after first troubleshooting DTC P0335/13, this may indicate a mechanical system problem. ES–67 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) 1 CHECK ENGINE CONTROL COMPUTER HINT: The function of the engine control computer crank position sensor can be checked using the oscilloscope function of the DS-II. (a) Connect the DS-II to terminals 59 (N1+) and 128 (N1-) of the engine control computer connectors.(For terminal layout, see page ES - 16.) Engine Control Computer ES N1+ N1A133549J06 (b) Set the DS-II to the oscilloscope function. Item Tester connection Tool setting Measurement condition N1+ ←→ N1- Condition 2 V/DIV, 20 ms/DIV While engine is idling HINT: • As engine speed increases, the amplitudes become larger. • As engine speed increases, the cycles become shorter. • DTCs may be recorded due to noise. A134283 OK CHECK AND REPLACE ENGINE CONTROL COMPUTER NG 2 CHECK CRANK POSITION SENSOR (a) Crankshaft Position Sensor 2 (-) 1 (+) A133584J01 Check the resistance. (1) Using a tester, measure the resistance between the connector terminals. Standard: 1630 to 2740 Ω (when cold) 2065 to 3225Ω (when warm) NOTICE: The terms, cold and warm, refer to the temperature of the parts inspected.Cold is designated as a temperature between -10 and 50°C. Warm is designated as a temperature between 50 to 100 °C. NG OK REPLACE CRANK POSITION SENSOR ES–68 3 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) CHECK WIRE HARNESS AND CONNECTOR (ENGINE CONTROL COMPUTER CRANK POSITION SENSOR) (a) (b) Engine Control Computer ES Disconnect the engine control computer connector B and the crank position sensor connector. Using a tester, check whether there is continuity or a short between the engine control computer and the crank position sensor.(For terminal layout, see page ES - 16.) Standard Tester Connection (Terminal Symbol) Engine Control Computer ←→ Crank Position Sensor N1+ 59 (N1+) ←→ 1 (+) There is continuity and no short between other terminals and body ground 128 (N1-) ←→ 2 (-) There is continuity and no short between other terminals and body ground N1- Crankshaft Position Sensor Vehicle Side Connector NG (+) Standard REPAIR OR REPLACE WIRE HARNESS OR CONNECTOR (-) A133585J01 OK 4 INSPECT SENSOR INSTALLATION PART (a) Check the tightness and installation condition of the crank position sensor bolt. NG REPAIR OR REPLACE INSTALLATION PART SENSOR OK 5 CHECK CRANK ANGLE SENSOR PLATE NO.1 (a) Check the concave and protruding parts of crank angle sensor plate No.1 and check the installation condition. NG REPAIR OR REPLACE SENSOR PLATE NO.1 OK CHECK AND REPLACE ENGINE CONTROL COMPUTER CRANK ANGLE ES–69 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) DTC P0340/14 CAM ANGLE SENSOR SIGNAL SYSTEM DESCRIPTION The cam position sensor (N2 signal) consists of the pickup coil and the timing rotor that is mounted on the camshaft. When the camshaft rotates, the relative positions of the protruding part of the timing rotor and the air gap on the top of the pickup coil changes. This causes the magnetic field to change, generating electromotive force in the pickup coil. DTC Detection Condition 1.Diagnosis Condition 2.Malfunction Condition 3.Malfunction Time 4.Other DTC No. P0340/14 1. 2. 3. 4. When cranking No input of a certain number of cam position sensor 1 trip Suspected Area • • • • ES Wire harness or connector Cam position sensor Camshaft Engine control computer CIRCUIT DIAGRAM Engine Control Computer Camshaft Position 1 58 2 12 N2 N2 A133586J02 ES–70 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) INSPECTION PROCEDURE HINT: • Read the freeze frame data using the DS-II. Freeze frame data records aspects of the engine's condition when malfunctions occur. This information is helpful when troubleshooting. • If the problem is not detected after first troubleshooting DTC P0340/14, this may indicate a mechanical system problem. 1 CHECK ENGINE CONTROL COMPUTER HINT: The function of the engine control computer cam position sensors can be checked using the oscilloscope function of the DS-II. (a) Connect the DS-II to terminals 58(N2+) and 127 (N2-) of the engine control computer connectors. (For terminal layout, see page ES - 16.) ES Engine Control Computer N2+ N2A133549J07 (b) Set the DS-II to the oscilloscope function. Item Tester Connection Tool setting Measurement condition :N2+ ←→ N2- Condition 2 V/DIV, 20 ms/DIV While engine is idling HINT: • As engine speed increases, the amplitudes become larger. • As engine speed increases, the cycles become shorter. • DTCs may be recorded due to noise. A134284 OK CHECK AND REPLACE ENGINE CONTROL COMPUTER NG 2 CHECK CAM POSITION SENSOR (a) Camshaft Position Sensor 2 1 (-) (+) A105341J11 Check the resistance. (1) Using a tester, measure the resistance between the connector terminals. Standard: 835 to 1400 (when cold) 1060 to 1645 (when warm) NOTICE: The terms, cold and warm, refer to the temperature of the parts inspected.Cold is designated as a temperature between -10 and 50°C. Warm is designated as a temperature between 50 to 100 °C. NG REPLACE CAM POSITION SENSOR ES–71 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) OK 3 CHECK WIRE HARNESS AND CONNECTOR (ENGINE CONTROL COMPUTER CAM POSITION SENSOR) (a) (b) Engine Control Computer Disconnect the engine control computer connector B and the cam position sensor connector. Using a tester, check whether there is continuity or a short between the engine control computer and the cam position sensor.(For terminal layout, see page ES - 16.) Standard: Tester Connection (Terminal Symbol) Engine Control Computer ←→ Crank Position Sensor N2+ N2- Camshaft Position Sensor Vehicle Side Connector NG (+) (-) Standard 58 (N2+) ←→ 1 (+) There is continuity and no short between other terminals and body ground 127 (N2-) ←→ 2 (-) There is continuity and no short between other terminals and body ground REPAIR OR REPLACE WIRE HARNESS OR CONNECTOR A133587J01 OK 4 INSPECT SENSOR INSTALLATION PART (a) Check the tightness and installation condition of the cam position sensor bolt. NG REPAIR OR REPLACE INSTALLATION PART SENSOR OK 5 Inspect camshaft (a) Check the concave and protruding parts of the camshaft and check the installation condition. NG REPAIR OR REPLACE CAMSHAFT OK CHECK AND REPLACE ENGINE CONTROL COMPUTER ES ES–72 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) DTC P0350/16 IGNITION PRIMARY SYSTEM DESCRIPTION A direct ignition system has been adopted. Along with increasing ignition accuracy, the direct ignition system reduces high voltage loss and enhances the overall reliability of the ignition system.The direct ignition system performs ignition, using 1 ignition coil for each cylinder.The engine control computer determines the ignition timing and transmits ignition signals (IG) to each cylinder.Based on the IG signals, the power transistor in the igniter cuts off the current in the primary coil. This generates electromotive force in the secondary coil. The electromotive force in the secondary coil ignites the spark plug. ES Battery Engine Control Computer Ignition Coil Assembly No. 1 Crankshaft Position Sensor (N1 Signal) Camshaft Position Sensor (N2 Signal) No. 1 Cylinder Ignition Coil Assembly No. 2 No. 2 Cylinder Knock Control Sensor Throttle Position Sensor Ingnition Coil Assembly No. 3 No. 3 Cylinder Ignition Coil Assembly No. 4 Intake Pressure Sensor No. 4 Cylinder Coolant Temperature Sensor Starter Signal Neutral Start Switch A133588 DTC No. P0350/16 DTC Detection Condition 1.Diagnosis Condition 2.Malfunction Condition 3.Malfunction Time 4.Other 1. At time of engine start and when engine is • • operating at 1500 r/min or less • 2. No IG signals continuously 3. Approx. 30 seconds 4. 1 trip Suspected Area Wire harness or connector IGNITION COIL ASSEMBLY Engine control computer ES–73 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) CIRCUIT DIAGRAM Ignition Coil Assembly (No. 1 Cylinder) 1 To IG2 Fuse Engine Control Computer 3 63 IG1 4 Ignition Coil Assembly (No. 2 Cylinder) 1 3 62 ES IG2 4 Ignition Coil Assembly (No. 3 Cylinder) 1 3 A9 61 IG3 4 Ignition Coil Assembly (No. 4 Cylinder) 1 3 A8 60 IG4 4 A133589J01 INSPECTION PROCEDURE HINT: • Read the freeze frame data using the DS-II. Freeze frame data records aspects of the engine's condition when malfunctions occur. This information is helpful when troubleshooting. • The inspection method for the No.1 cylinder circuit is shown below. If the DTC P0350/16 is still shown after the test, check the circuit of each cylinder. 1 CHECK WIRE HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT CHECK) (a) (b) (c) Ignition Coil Assembly Vehicle Side Connector Disconnect the ignition coil assembly connector. Turn the ignition switch to the ON position. Using a tester, check the voltage between terminals in the ignition coil assembly vehicle side connector. Standard Tester Connection (Terminal Symbol) 1 (+B) ←→ 4 (GND) NG +B GND A109396J05 OK Standard 9 to 14 V CHECK POWER SOURCE CIRCUIT ES–74 2 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) CHECK WIRE HARNESS AND CONNECTOR (ENGINE CONTROL COMPUTER IGNITION COIL ASSEMBLY) (a) (b) Engine Control Computer ES Disconnect the engine control computer connector A and ignition coil assembly connector. Using a tester, check whether there is continuity or a short between the engine control computer vehicle side connector and the ignition coil assembly vehicle side connector. (For terminal layout, see page ES - 16.) Standard Tester Connection (Terminal Symbol) Engine Control Computer ←→ Ignition Coil Assembly 63 (IG1) ←→ 3 (IG1) IG1 Ignition Coil Assembly Vehicle Side Connector IG1 NG Standard There is continuity and no short between other terminals and body ground REPAIR OR REPLACE WIRE HARNESS OR CONNECTOR A133590J01 OK 3 REPLACE IGNITION COIL ASSEMBLY GO 4 CHECK FOR DTCs (a) (b) Connect the DS-II to the DLC. Read the DTCs by following the prompts on the screen. Result A B P0350/16 Indicates a normal code B A REPLACE ENGINE CONTROL COMPUTER SYSTEM RETURNS TO NORMAL ES–75 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) DTC P0420/27 CATALYST DETERIORATION DESCRIPTION The rear O2 sensor detects oxygen levels after the catalyst. If the catalyst has deteriorated, the rear O2 sensor signal looks like that of the front O2 sensor, repeating lean/rich signals in short cycles.Therefore, the timing of the voltage of the lean/rich signal from the rear O2 sensor is calculated and compared to the lean/rich signal from the front 02 sensor. If this voltage exceeds a set value, and the response of the rear O2 sensor from the front O2 sensor signal becomes more rapid than the set value, this indicates that the catalyst has deteriorated. In this case, the DTC shown below will be recorded. DTC No. P0420/27 DTC Detection Condition 1.Diagnosis Condition 2.Malfunction Condition 3.Malfunction Time 4.Other 1. The vehicle is driven at a speed of 50 km/ h, after the engine is completely warmedup 2. The voltage of the rear O2 sensor signal is large, and the response is rapid 3. 40 seconds or more 4. 2 trip Suspected Area • • • • • Exhaust system Ignition system Fuel system Engine control computer Wire harness or connector CIRCUIT DIAGRAM (See Page ES - 44) INSPECTION PROCEDURE 1 INSPECT EMISSION CONTROL SYSTEM HINT: For inspection procedures, See page EC - 1. NG REPAIR OR REPLACE EMISSION CONTROL SYSTEM OK 2 INSPECT FUEL INJECTOR ASSEMBLY (See page ES - 54) NG OK REPLACE FUEL INJECTOR ASSEMBLY ES ES–76 3 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) CHECK COOLANT TEMPERATURE (a) Check the resistance. (1) Using the tester, inspect the resistance between the terminals. Standard ES Measurement Condition Standard When approx. 20°C 2.32 to 2.59 kΩ When approx. 80°C 0.310 to 0.326 kΩ NOTICE: Protect the terminal area from getting wet when checking the sensor by applying water. Also, wipe the sensor dry after the check. NG Resistance REPLACE SENSOR COOLANT TEMPERATURE [kΩ] Temperature [°C] A050330 OK 4 INSPECT THE IGNITION SYSTEM HINT: For inspection procedures, see page IG - 1. NG REPAIR OR REPLACE IGNITION SYSTEM OK 5 CHECK FUEL SYSTEM HINT: For inspection procedures, see page FU - 3. NG REPAIR OR REPLACE FUEL SYSTEM NG REPAIR OR REPLACE LEAKAGE AREA OK 6 OK CHECK FOR EXHAUST GAS LEAKS EXHAUST GAS ES–77 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) 7 READ DS-II DATA (RrO2 SENSOR OUTPUT VOLTAGE) (a) (b) (c) (d) Connect the DS-II to the DLC. Following the prompts on the DS-II screen, select ECU DATA MONITOR, then RrO2 SENSOR OUTPUT VOLTAGE. Then select MODE CHANGE and LINE GRAPH. Warm up oxygen sensor No.2 for approximately 90 seconds at an engine speed of 2500 r/min. Read the voltage of the RrO2 sensor output while racing the engine at a speed of 4000 r/min several times. Result: Voltage output is 0.4 V or less and 0.5 V or more OK GO TO STEP 9 NG 8 CHECK WIRE HARNESS AND CONNECTOR (ENGINE CONTROL COMPUTER OXYGEN SENSOR NO.2) (a) (b) Engine Control Computer Disconnect the engine control computer connector B and the connector of oxygen sensor No.2. Using a tester, check whether there is continuity or a short between the engine control computer and oxygen sensor No.2. (For terminal layout, see page ES - 16.) Standard Tester Connection (Terminal Symbol) Engine Control Computer ←→ Oxygen Sensor 18 (OX2) ←→ 3 (OX2) There is continuity and no short between the other terminals and body ground 19 (E2) ←→ 4 (E2) There is continuity and no short between the other terminals and body ground OX1 Oxygen Sensor NO. 2 Vehicle Side Connector NG REPAIR OR REPLACE WIRE HARNESS OR CONNECTOR A133576J05 OK REPLACE OXYGEN SENSOR NO.2 9 ROAD TEST TO CHECK OPERATION (a) Standard Connect the DS-II to the DLC. ES ES–78 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) (b) (c) Turn the ignition switch to the ON position, and delete the DTCs by following the prompts on the DS-II screen. To check the system, warm up the oxygen sensor No.2 by performing a road test. HINT: Refer to the procedure for the oxygen sensor No.2 output voltage inspection. GO ES 10 READ DTCs (a) (b) Connect the DS-II to the DLC. Turn the ignition switch to the ON position, and read the DTCs by following the prompts on the DS-II screen. (1) Check if DTC P0420/27 is indicated. Result A B P0420/27 is output again P0420/27 is not output again B CHECK FOR INTERMITTENT PROBLEMS A CHECK AND REPLACE ENGINE CONTROL COMPUTER ES–79 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) DTC P0443/76 EVAP PURGE VSV DESCRIPTION Evap purge VSV controls evaporation purge volume based on a signal (duty signal) from the engine control computer.Purge volume is determined based on the ON/OFF time ratio (duty ratio). DTC Detection Condition 1.Diagnosis Condition 2.Malfunction Condition 3.Malfunction Time 4.Other DTC No. 1. 2. 3. 4. P0443/76 Suspected Area After engine start Evap purge control signal malfunction VSV operates more than 3 times 2 trip • • • ES Evap purge VSV Wire harness or connector Engine control computer CIRCUIT DIAGRAM Engine Control Computer EVAP Purge VSV To EFI Relay 2 1 16 PRG A138379J01 ES–80 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) INSPECTION PROCEDURE 1 INSPECT EVAP PURGE VSV (a) Port Check the air-flow. (1) Check for air-flow between the ports when voltage is applied to the connector terminals. Standard ES (b) A134303J01 Inspection Condition Air-flow No current No air-flow Current Air-flow Check the resistance. (1) Using the tester, inspect the resistance between the terminals. Standard: 30 to 34 Ω (20°C) NG REPLACE EVAP PURGE VSV OK 2 CHECK WIRE HARNESS AND CONNECTOR (POWER SOURCE VOLTAGE CHECK) (a) (b) (c) Disconnect the connector of the evap purge VSV connector. Turn the ignition switch to the ON position. Using a tester, measure the voltage between evap purge VSV vehicle side connector terminal 2 (+) and the body ground. Standard: 9 to 14 V NG CHECK POWER SOURCE CIRCUIT OK 3 CHECK WIRE HARNESS AND CONNECTOR (ENGINE CONTROL COMPUTER EVAP PURGE VSV) (a) (b) Disconnect connector A of the engine control computer and the connector of the evap purge VSV. Using a tester, check whether there is continuity or a short between the engine control computer vehicle side connector terminal 16 (PRG) and evap purge VSV vehicle side connector terminal 1 (-). (For terminal layout, see page ES - 16.) Standard: There is continuity and no short between the other terminals and body ground NG OK REPLACE ENGINE CONTROL COMPUTER REPAIR OR REPLACE WIRE HARNESS OR CONNECTOR ES–81 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) DTC P0500/52 VEHICLE SPEED SIGNAL SYSTEM DESCRIPTION The vehicle speed signal is transmitted to the engine control computer via CAN communication. DTC Detection Condition 1.Diagnosis Condition 2.Malfunction Condition 3.Malfunction Time 4.Other DTC No. 1. While driving (when slowing down and during fuel-cut) 2. Vehicle speed signal is not input 3. 3 seconds or more 4. 2 trip P0500/52 Suspected Area • • • • Combination meter Speed sensor Wire harness or connector Engine control computer ES CIRCUIT DIAGRAM Engine Control Computer Combination Meter CANH CANL 21 9 22 8 HCAN LCAN A134898J01 INSPECTION PROCEDURE 1 READ DS-II DATA (VEHICLE SPEED) (a) (b) (c) Make sure that the speedometer operates normally. Connect the DS-II to the DLC. Read the vehicle speed displayed on the DS-II. Standard: The DS-II and speedometer displays are identical. OK NG CHECK FOR INTERMITTENT PROBLEMS ES–82 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) 2 GO TO METER AND GAUGE SYSTEM 3 READ DTCs (a) (b) ES B Connect the DS-II to the DLC. Turn the ignition switch to the ON position, and read the DTCs by following the prompts on the DS-II screen. (1) Check if DTC P0500/52 is detected. Standard Tester Display Proceed to DTC P0500/52 is detected A DTC P0500/52 is not detected B SYSTEM RETURNS TO NORMAL A REPAIR OR REPLACE ENGINE CONTROL COMPUTER ES–83 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) DTC P0505/71 ISC VALVE SYSTEM DESCRIPTION The throttle body idle speed control valve assembly (ISCV) of the rotary solenoid type is installed on the throttle body. The intake air that by-passes the throttle valve passes through the passage to the ISCV. To control the idle speed, the engine control computer controls the intake air passage of the ISC valve and sends a signal to allow the idle speed to be adjusted towards the target idling speed. ES Throttle Valve Intake Air Surge Tank Signal Engine ECU To Cylinder ISC Valve A050586 DTC Detection Condition 1.Diagnosis Condition 2.Malfunction Condition 3.Malfunction Time 4.Other DTC No. P0505/33 1. 2. 3. 4. While engine is idling Short or open in ISCV circuit 3 seconds or more 1 trip Suspected Area • • • ISCV Wire harness or connector Engine control computer ES–84 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) CIRCUIT DIAGRAM Engine Control Computer ISCV To EFI Relay ES 2 1 65 ISC 3 A133591J01 INSPECTION PROCEDURE HINT: Read the freeze frame data using the DS-II.Freeze frame data records aspects of the engine's condition when malfunctions occur. This information is helpful when troubleshooting. 1 PERFORM DS-II ACTIVE TEST (ISC DUTY RATIO) (a) (b) Following the prompts on the DS-II screen , select ACTIVE TEST. Check that the engine speed changes when the ISC duty ratio is changed. Standard: The engine speed increases or decreases in response to changes in the ISC duty ratio. OK NG CHECK FOR INTERMITTENT PROBLEMS ES–85 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) 2 CHECK THROTTLE BODY IDLE SPEED CONTROL VALVE ASSEMBLY (POWER SOURCE CIRCUIT) (a) (b) (c) ISCV Vehicle Side Connector Disconnect the ISCV connector. Turn the ignition switch to the ON position. Using a tester, measure the voltage of the ISCV vehicle side connecter terminals. Standard Tester Connection (Terminal Symbol) 2 (B) ←→ 3 (RSC) RSO B RSC A133868 NG Standard 9 to 14 V CHECK POWER SOURCE CIRCUIT OK 3 CHECK WIRE HARNESS OR CONNECTOR (ISC CIRCUIT) (a) (b) Engine Control Computer Disconnect the engine control computer connector A and ISCV connector. Using a tester, check whether there is continuity or a short between the engine control computer and the ISCV.(For terminal layout, see page ES - 16.) Standard Tester Connection (Terminal Symbol) Engine Control Computer ←→ ISCV 65 (ISC) ←→ 1 (RSO) ISC NG Standard There is continuity and no short between the other terminals and body ground REPAIR OR REPLACE WIRE HARNESS OR CONNECTOR ISCV Vehicle Side Connector RSO B RSC A133869 OK 4 CHECK THROTTLE BODY IDLE SPEED CONTROL VALVE ASSEMBLY NOTICE: • Delete the DTCs after the inspection. (a) Remove the ISCV. (b) CHECK OPERATION (1) Connect the wire harness to the removed ISCV. ES ES–86 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) (2) NG ES With the ignition in the ON position, check the operation of the valve. Standard: Neutral (50% open) → Fully closed → Fully open → Neutral (50% open) HINT: Operation should start within 0.5 seconds. REPLACE THROTTLE BODY IDLE SPEED CONTROL VALVE ASSEMBLY OK CHECK AND REPLACE ENGINE CONTROL COMPUTER ES–87 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) DTC P0535/44 A/C EVAPORATOR TEMPERATURE SENSOR SIGNAL SYSTEM DESCRIPTION Cooler thermistor No.1 (evaporator rear sensor) is installed in the evaporator of the air conditioner unit. Cooler thermistor No.1 senses the temperature of the cooled air that has passed through the evaporator as a change in resistance. It outputs this change in resistance to the engine control computer. DTC Detection Condition 1.Diagnosis Condition 2.Malfunction Condition 3.Malfunction Time 4.Other DTC No. P0535/44 ES Suspected Area 1. IG ON 2. Open or short in cooler thermistor No.1 (evaporator rear sensor) circuit 3. Continuously for 0.5 seconds or more 4. 1 trip • • • Cooler thermistor No.1 (evaporator rear sensor) Wire harness or connector Engine control computer CIRCUIT DIAGRAM Engine Control Computer Cooler Thermistor NO. 1 (Post-EVAP Sensor) 1 45 2 116 ACEV E21 A134276J01 INSPECTION PROCEDURE 1 CHECK COOLER THERMISTOR NO.1 (EVAPORATOR REAR SENSOR) (a) Disconnect the connector of cooler thermistor No.1 (evaporator rear sensor). ES–88 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) (b) Using a tester, check the resistance between terminals 1 and 2 of the connector of cooler thermistor No.1 (evaporator rear sensor). Standard Temperature 1 0°C 15 °C 2 Standard 4.6 to 5.1 kΩ 2.1 to 2.6 kΩ NOTICE: • If you touch the temperature sensor with your hand, you body temperature will confuse the measurement.Therefore, make sure to hold the connector side when performing the measurements. • Wait until the sensor adjusts to a stable ambient temperature before performing the inspection. A133916 ES NG REPLACE COOLER THERMISTOR (EVAPORATOR REAR SENSOR) NO.1 OK 2 INSPECT WIRE HARNESS AND CONNECTOR (ENGINE CONTROL COMPUTER COOLER THERMISTOR NO.1 [EVAPORATOR REAR SENSOR]) (a) (b) Engine Control Computer Disconnect the engine control computer connector C and the connector of cooler thermistor No.1. Using a tester, check whether there is continuity or a short between the engine control computer vehicle side connector C and the connector terminals of cooler thermistor No.1.(For terminal layout, see page ES - 16.) Standard Tester Connection (Terminal Symbol) Engine Control Computer ←→ Cooler Thermistor No.1 (Evaporator Rear Sensor) E21 ACEV Cooler Thermistor No.1 Vehicle Side Connector NG (+) Standard 45 (ACEV) ←→ 1 (+) There is continuity and no short between the other terminals and body ground 116 (E21) ←→ 2 (-) There is continuity and no short between the other terminals and body ground REPAIR OR REPLACE WIRE HARNESS OR CONNECTOR (-) A133915J01 OK CHECK AND REPLACE ENGINE CONTROL COMPUTER ES–89 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) DTC P1105/32 ATMOSPHERIC PRESSURE SENSOR SIGNAL SYSTEM DESCRIPTION The atmospheric pressure sensor is built into the EFI ECU. DTC No. P1105/32 DTC Detection Condition 1.Diagnosis Condition 2.Malfunction Condition 3.Malfunction Time 4.Other 1. After engine start 2. No signals from atmospheric pressure sensor 3. 1 second or more 4. 1 trip Suspected Area ES • Engine control computer INSPECTION PROCEDURE 1 2 CLEAR DTCs. (a) (b) Connect the DS-II to the DLC. Delete the DTCs using the DS-II. (a) (b) Connect the DS-II to the DLC. Read the DTCs using the DS-II. Standard READ DTCs Result B Proceed to DTC P1105/32 is detected A DTC P1105/32 is not detected B CHECK FOR INTERMITTENT PROBLEMS A REPAIR OR REPLACE ENGINE CONTROL COMPUTER ES–90 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) DTC P1300/36 IONIC CURRENT SYSTEM DESCRIPTION This system detects engine misfires by using the fact that the ionic current generated by combustion pressure has an identical waveform.If a misfire occurs, ionic current is not generated. Therefore, when the voltage transmitted to the engine control computer is lower than specified, the engine control computer detects a misfire.If the detected ionic current is extremely weak it is amplified by the igniter. ES Engine Control Computer Battery Ignition Coil Assembly No.1 Crankshaft Position Sensor ( N1 Signal ) Ion Current Detection Circuit Camshaft Position Sensor ( N2 Signal ) No. 1 Cylinder Knock Control Sensor Throttle Position Sensor Ignition Coil Assembly No. 2 No. 2 Cylinder Intake Pressure Sensor Coolant Temperature Sensor Ignition Coil Assembly No. 3 No. 3 Cylinder Ignition Coil Assembly No.4. No. 4 Cylinder Starter Signal Neutral Starter Switch A135529 DTC No. P1300/36 DTC Detection Condition 1.Diagnosis Condition 2.Malfunction Condition 3.Malfunction Time 4.Other 1. Engine is warmed up and running 2. ICMB signal is not input (continuously input) 3. Approx.30 seconds 4. 2 trip Suspected Area • • • • • IGNITION COIL ASSEMBLY Fuel system Ignition system Wire harness or connector Engine control computer ES–91 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) CIRCUIT DIAGRAM Ignition Coil Assembly ( No. 1 Cylinder ) To E/G Fuse Engine Control Computer 1 3 A11 4 2 B11 IG1 ICMB1 Ignition Coil Assembly ( No. 2 Cylinder ) 1 3 A10 4 2 B10 ES IG2 ICMB2 Ignition Coil Assembly ( No. 3 Cylinder) 1 3 A9 4 2 B9 IG3 ICMB3 Ignition Coil Assembly ( No. 4 Cylinder) 1 3 A8 4 2 B8 IG4 ICMB4 A135526 INSPECTION PROCEDURE HINT: • Read the freeze frame data using the DS-II.Freeze frame data records aspects of the engine's condition when malfunctions occur. This information is helpful when troubleshooting. • The inspection method for the No.1 cylinder circuit is shown below. If the DTC P1300/36 is still shown after the test, check the circuit of each cylinder. 1 INSPECT IGNITION SYSTEM (See page IG - 1) NG REPAIR OR REPLACE IGNITION SYSTEM OK 2 CHECK ENGINE CONTROL COMPUTER (IG SYSTEM) HINT: The communication between the engine control computer and the ignition coil assembly can be checked using the oscilloscope function of the DS-II. ES–92 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) (a) CHECK OUTPUT WAVEFORM (1) Connect the DS-II between the terminals of the engine control computer and set the DS-II to the oscilloscope function. IG1, IG2, IG3, IG4 ←→ E1 Tester Connection Tool setting 5 V/DIV, 10 ms/DIV Measurement Condition Engine is warmed up and idling HINT: • As the engine speed increases, the waveform cycle becomes shorter. • The oscilloscope waveform shown as an example does not include noise or chattering waveforms. A134282 ES NG REPLACE ENGINE CONTROL COMPUTER OK 3 CHECK WIRE HARNESS AND CONNECTOR (ENGINE CONTROL COMPUTER IGNITION COIL) (a) (b) Engine Control Computer Disconnect engine control computer connectors A and B and the ignition coil assembly connector. Using a tester, check whether there is continuity or a short between the engine control computer vehicle side connector and the ignition coil assembly vehicle side connector.(For terminal layout, See page ES - 16) Standard Tester Connection (Terminal Symbol) Engine Control Computer ←→ Ignition Coil Assembly IG1 ICMB1 Ignition Coil Assembly Vehicle Side Connector NG ION Standard 63 (IG1) ←→ 3 (IG1) There is continuity and no short between the other terminals and body ground 51 (ICMB1) ←→ 2 (ION) There is continuity and no short between the other terminals and body ground REPAIR OR REPLACE WIRE HARNESS OR CONNECTOR IG1 A135525 OK 4 CHECK WIRE HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT CHECK) (a) (b) Disconnect the ignition coil assembly connector. Turn the ignition switch to the ON position. ES–93 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) (c) Ignition Coil Assembly Vehicle Side Connector Using a tester, check the voltage between the terminals in the ignition coil assembly vehicle side connector. Standard Tester Connection (Terminal Symbol) Standard 1 (+B) ←→ 4 (GND) NG +B 9 to 14 V REPAIR OR REPLACE POWER SOURCE SYSTEM GND A109396J05 ES OK 5 CHECK ENGINE CONTROL COMPUTER (ICBM) HINT: The communication between the engine control computer and the ignition coil assembly can be checked using the oscilloscope function of the DS-II. (a) CHECK OUTPUT WAVEFORM (1) Connect the DS-II between the terminals of the engine control computer and set the DS-II to the oscilloscope function. Tester Connection 1 2 A140669 TO FUEL SYSTEM Tool setting 2 V/DIV, 20 ms/DIV Measurement Condition Engine is warmed up and idling, coolant temperature is 80°C or higher, air conditioner is ON HINT: • The output waveform (CH2) of the ionic current combustion control signal generated between the output waveform of the ignition signal is the ionic current combustion control signal of cylinder #4 when cylinder #1 is inspected. (When cylinder #2 is inspected, cylinder #3). • The oscilloscope waveform shown as an example does not include noise or chattering waveforms. NG OK CH1: IG1, IG2, IG3, IG4 ←→ E1 CH2: ICMB1, ICMB2, ICMB3, ICMB4 REPLACE IGNITION COIL ES–94 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) DTC P01346/75 VVT CONTROL SYSTEM (VALVE TIMING FAIL) DESCRIPTION The VVT system controls the open/close timing of the air intake valve to achieve the appropriate timing in accordance with vehicle operating conditions.The engine control computer controls the camshaft and camshaft oil control valves in order to properly adjust the open/close timing of the air intake valve, and changes the relative position between the camshaft and crankshaft by operating the camshaft timing gear assembly. ES DTC No. P1346/18 DTC Detection Condition 1.Diagnosis Condition 2.Malfunction Condition 3.Malfunction Time 4.Other Suspected Area 1. While engine is running 2. Valve timing deviation (cannot achieve targeted valve timing) 3. 5 seconds or more 4. 2 trip • • • Mechanical system malfunction (timing chain jumped a tooth or chain stretched) VALVE TIMING ENGINE CONTROL COMPUTER INSPECTION PROCEDURE 1 CHECK VALVE TIMING Standard: See the illustration. NG ADJUST VALVE TIMING Timing Marks Notch A138143J01 OK CHECK AND REPLACE ENGINE CONTROL COMPUTER ES–95 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) DTC P1349/73 VVT CONTROL (ADVANCE RETARD ANGLE FAIL) ANGLE AND DESCRIPTION The VVT system controls the open/close timing of the air intake valve to achieve the appropriate timing in accordance with vehicle operating conditions.The engine control computer controls the camshaft and camshaft oil control valve assembly in order to properly adjust the open/close timing of the air intake valve, and changes the relative position between the camshaft and crankshaft by operating the camshaft timing gear assembly. DTC Detection Condition 1.Diagnosis Condition 2.Malfunction Condition 3.Malfunction Time 4.Other DTC No. P1349/59 1. Engine speed of 500 to 4000 r/min, and coolant temperature between 80 to 110°C 2. Cannot achieve valve timing within ±5°of target, or valve timing is fixed, does not vary 3. 5 seconds or more 4. 2 trip ES Suspected Area • • • • • VALVE TIMING CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY CAMSHAFT TIMING GEAR ASSEMBLY VVT SYSTEM OIL PATH Engine control computer CIRCUIT DIAGRAM Engine Control Computer Camshaft Timing Oil Control Valve Assembly 1 26 2 25 OCV+ OCV- G100100J14 INSPECTION PROCEDURE HINT: Read the freeze frame data using the DS-II. Freeze frame data records aspects of the engine's condition when malfunctions occur. This information is helpful when troubleshooting. 1 READ DTCs (a) (b) (c) (d) Connect the DS-II to the DLC. Turn the ignition switch to the ON position, and delete the DTCs by following the prompts on the DS-II screen. Perform a road test. Check for DTCs following the prompts on the DS-II screen. (1) Check if DTC P1349/73 is output. Result: ES–96 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) A B Indicates P1349/73 Does not indicate P1349/73 B CHECK FOR INTERMITTENT PROBLEMS A 2 CHECK VALVE TIMING ES Standard: See the illustration. NG ADJUST VALVE TIMING Timing Marks Notch A138143J01 OK 3 CHECK CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (a) Check the resistance. (1) Using a tester, measure the resistance between the terminals. Standard: 6.9 to 7.9 (20°C) ES–97 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) (b) (+) (-) View of A CHECK OPERATION (1) Apply battery voltage across the terminals, then check that the spool valve operates. NOTICE: Make sure the spool valve is not stuck. HINT: If the spool valve does not return due to foreign matter like sludge, the pressure may leak slightly toward the advanced side. This leakage may cause DTCs to be recorded. NG REPLACE CAMSHAFT TIMING CONTROL VALVE ASSEMBLY OIL ES A A133914 OK 4 CHECK CAMSHAFT TIMING GEAR ASSEMBLY (a) Make sure that the camshaft timing gear assembly is not damaged. NG REPLACE CAMSHAFT ASSEMBLY TIMING GEAR OK 5 CHECK OIL CONTROL VALVE FILTER (a) Check that the oil control valve filter is not blocked. Standard: There is no blockage or foreign matter. NG REPLACE OIL CONTROL VALVE FILTER Mesh Portion A079997 OK 6 READ DTCs (a) (b) (c) Connect the DS-II to the DLC. Turn the ignition switch to the ON position, and delete the DTCs by following the prompts on the DS-II screen. Perform a road test. ES–98 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) (d) Check for DTCs following the prompts on the DS-II screen. (1) Check if DTC P1349/73 is output. Result: A B Indicates P1349/73 Does not indicate P1349/73 B CHECK FOR INTERMITTENT PROBLEMS A ES CHECK AND REPLACE ENGINE CONTROL COMPUTER ES–99 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) DTC P1351/62 TIMING CHAIN CONTROL SYSTEM DESCRIPTION The VVT system controls the open/close timing of the air intake valve to achieve the appropriate timing in accordance with vehicle operating conditions. The engine control computer controls the camshaft and the camshaft timing oil control valve in order to properly adjust the open/close timing of the air intake valve, and changes the relative position between the camshaft and crankshaft by operating the camshaft timing gear assembly. DTC Detection Condition 1.Diagnosis Condition 2.Malfunction Condition 3.Malfunction Time 4.Other DTC No. 1. 2. 3. 4. P1351/62 Suspected Area • While engine is running Valve timing deviation 5 seconds or more 5 trip • • Mechanical system malfunction (timing chain jumped a tooth or chain stretched) VALVE TIMING Engine control computer INSPECTION PROCEDURE 1 CHECK VALVE TIMING Standard: See the illustration. NG Timing Marks Notch A138143J01 OK REPLACE CHAIN ADJUST VALVE TIMING ES ES–100 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) DTC P1510/54 STARTER SIGNAL SYSTEM DESCRIPTION The starter operation signal is transmitted to the STSW terminal of the engine control computer while the engine cranks.The starter operating signal is used primarily for increasing fuel injection volume when the engine starts. DTC No. ES P1510/54 DTC Detection Condition 1.Diagnosis Condition 2.Malfunction Condition 3.Malfunction Time 4.Other 1. After engine start 2. There are no ON signals even when engine speed reaches a set value at a vehicle speed of 0 km/h 3. 4. 1 trip * * : 2 trip for EU specifications. Suspected Area • • Wire harness or connector Engine control computer ES–101 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) CIRCUIT DIAGRAM Ignition Switch Engine Control Computer 5 1 ES Starter Relay 3 2 S AM 10 STS MAI Transmission Control Computer Starter A133870J02 INSPECTION PROCEDURE HINT: This diagnosis procedure assumes that the engine is not malfunctioning and can be cranked with the starter. If the engine cannot be cranked, determine the suspected area using a problem symptoms table. (See page ES - 4) 1 INSPECT ENGINE CONTROL COMPUTER SST 09842-97209 Connect the SST (sub harness, EFI computer check) to the engine control computer. (b) Turn the ignition switch to the ON position. (a) ES–102 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) (c) Engine Control Computer Using a tester, measure the voltage between terminals D26 (STSW) and B32 (E1) of the engine control computer connector. (For terminal layout, see page ES - 16.) Standard: 10 to 14 V OK CHECK AND REPLACE ENGINE CONTROL COMPUTER STSW E1 A133549J16 ES NG 2 CHECK WIRE HARNESS AND CONNECTOR (ENGINE CONTROL COMPUTER STARTER RELAY) (a) (b) (c) Engine Control Computer Disconnect the engine control computer connector D. Remove the starter relay. Using a tester, check whether there is continuity or a short between the engine control computer and the starter relay block holder terminal. (For terminal layout, see page ES - 16.) Standard Tester Connection (Terminal Symbol) Engine Control Computer ←→ Relay Block Holder For Installing Starter Relay 107 (STSW) ←→ 4 STSW Standard There is continuity and no short between the other terminals and body ground NOTICE: When applying the tester probe to the holder during inspection, be careful not to damage the holder part by pressing it too hard. 2 5 3 NG 1 A133871J01 OK CHECK AND REPAIR POWER SOURCE SYSTEM REPAIR OR REPLACE WIRE HARNESS OR CONNECTOR ES–103 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) DTC P1560/61 SHORT TO BACK UP POWER SOURCE DESCRIPTION Even when the ignition switch is turned off, battery power is supplied to the BAT terminal of the engine control computer. This power is used for recording DTC or data when malfunctions occur. DTC Detection Condition 1.Diagnosis Condition 2.Malfunction Condition 3.Malfunction Time 4.Other DTC No. 1. Ignition is in ON position (battery voltage exceeds 10 V) 2. Open to back-up power source circuit 3. 4. 3 trip P1560/61 Suspected Area • • • ES Engine control computer Wire harness or connector EFI fuse CIRCUIT DIAGRAM Engine Control Computer MAIN EFI C7 38 B32 125 Battery BAT E1 A133908J01 INSPECTION PROCEDURE 1 CHECK ENGINE CONTROL COMPUTER SST 09842-97209 (a) Connect the SST (sub harness, EFI computer check) to the engine control computer. ES–104 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) (b) Engine Control Computer Measure the voltage between the engine control computer terminals using a tester. (For terminal layout, see page ES - 16.) Standard Tester Connection (Terminal Symbol) 38 (BATT) ←→ 125 (E1) OK E1 Standard 10 to 14 V CHECK FOR INTERMITTENT PROBLEMS BAT A133549J08 ES NG 2 CHECK FUSE (EFI FUSE) (a) (b) Engine Room R/B Remove the EFI fuse from the inside of the engine room R/B. Using a tester, check the EFI fuse for continuity. Standard: Continuity NG REPLACE FUSES EFI Fuse A133909J01 OK CHECK OR REPLACE ENGINE ECU POWER CIRCUIT ES–105 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) KEYLESS SYSTEM / IMMOBILISER SYSTEM P1600/83 COMMUNICATION SYSTEM (MALFUNCTION IN ECU) DTC DESCRIPTION The transponder key computer assembly (immobiliser ECU) ensures security by controlling the START/END of the communication of matching codes with the engine control computer. It does so in accordance with ignition ON/OFF status and the immobiliser SET/UNSET status. If the communication cannot be matched due to a malfunction in the engine control computer, a DTC is recorded. DTC No. P1600/83 ES DTC Detection Condition 1.Diagnosis Condition 2.Malfunction Condition 3.Malfunction Time 4.Other 1. IG ON 2. Communication stopped with immobiliser ECU 3. 1 second or more 4. 1 trip Suspected Area • Engine control computer INSPECTION PROCEDURE 1 READ DTCs (a) (b) REPLACE ENGINE CONTROL COMPUTER Connect the DS-II to the DLC. Turn the ignition switch to the ON position, and read the DTCs by following the prompts on the DS-II screen. HINT: If P1600/83 is detected, this indicates that the engine computer is malfunctioning. Replace the engine control computer. ES–106 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) KEYLESS / IMMOBILISER SYSTEM P1601/81 COMMUNICATION SYSTEM (CODE DOES NOT MATCH, COMMUNICATION ERROR) DTC DESCRIPTION The transponder key computer assembly (immobiliser ECU) ensures security by controlling the START/END of the communication of matching codes with the engine control computer. It does so in accordance with the ignition ON/OFF status and the immobiliser SET/UNSET status. ES DTC Detection Condition 1.Diagnosis Condition 2.Malfunction Condition 3.Malfunction Time 4.Other DTC No. 1. IG ON 2. Communication problem with transponder key computer assembly (immobiliser ECU) or code mismatch 3. 1 second or more 4. 1 trip P1601/81 Suspected Area • • • TRANSPONDER KEY COMPUTER ASSEMBLY (IMMOBILISER ECU) Engine control computer Wire harness or connector CIRCUIT DIAGRAM Engine Control Computer Smart ECU SIO2 9 117 SIO2 A133872J02 INSPECTION PROCEDURE 1 READ DTCs (a) (b) Connect the DS-II to the DLC. Turn the ignition switch to the ON position, and read the DTCs by following the prompts on the DS-II screen. ES–107 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) Standard: DTC P1601/81 is not output OK CHECK FOR INTERMITTENT PROBLEMS NG 2 CHECK WIRE HARNESS AND CONNECTOR (a) (b) Engine Control Computer Disconnect the engine control computer connector C and the immobiliser ECU connector. Using a tester, check whether there is continuity or a short between the engine control computer vehicle side connector and the immobiliser ECU vehicle side connector. (For terminal layout, see page ES - 16.) Standard Inspection Terminal (Terminal Name) Engine Control Computer ←→ Smart ECU 117 (SIO2) ←→ 8 (SIO2) SIO2 Connector C NG Transponder Key Computer Assembly Vehicle Side Connector Standard There is continuity and no shorts between other terminals and body ground REPAIR OR REPLACE WIRE HARNESS OR CONNECTOR SIO2 B143232J01 OK 3 RE-REGISTRATION (ENGINE CONTROL COMPUTER IMMOBILISER ECU (a) (b) (c) (d) Connect the DS-II to the DLC. Delete the DTCs using the DS-II. Register the matching codes for the engine control computer and immobiliser ECU. Turn the ignition switch to the ON position, and read the DTCs by following the prompts on the DS-II screen. Standard: DTC P1601/81 is not output OK SYSTEM RETURNS TO NORMAL NG 4 REPLACE ENGINE CONTROL COMPUTER (a) Replace with a new or a known-good engine control computer. ES ES–108 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) (b) After replacing the engine control computer, register the keys, turn the ignition switch to the ON position, then read the DTCs. Standard: DTC P1601/81 is not output OK SYSTEM RETURNS TO NORMAL NG REPLACE TRANSPONDER KEY COMPUTER ASSEMBLY ES ES–109 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) DTC P1656/74 OCV CONTROL SYSTEM DESCRIPTION (See ES - 95) DTC Detection Condition 1.Diagnosis Condition 2.Malfunction Condition 3.Malfunction Time 4.Other DTC No. Trouble Area 1. IG ON 2. Short or open to camshaft timing oil control valve assembly and circuit 3. 1 second or more 4. 1 trip P1656/39 • • • ES Wire harness or connector Camshaft timing oil control valve assembly Engine control computer CIRCUIT DIAGRAM (See ES - 95) INSPECTION PROCEDURE HINT: Read the freeze frame data using the DS-II.Freeze frame data records aspects of the engine's condition when malfunctions occur. This information is helpful when troubleshooting. 1 CHECK CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (a) (b) (+) (-) View of A Check the resistance. (1) Using a tester, measure the resistance between the terminals. Standard: 6.9 to 7.9 (20°C) Check operation. (1) Apply battery voltage across the terminals, then check that the spool valve operates. NOTICE: Make sure the spool valve is not stuck. HINT: If the spool valve does not return due to foreign matter like sludge, the pressure may leak slightly toward the advanced side. This leakage may cause DTCs to be recorded. NG REPLACE CAMSHAFT TIMING CONTROL VALVE ASSEMBLY OIL A A133914 OK 2 CHECK WIRE HARNESS AND CONNECTOR (ENGINE CONTROL COMPUTER CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY) (a) Disconnect the engine control computer connector A and the connector of the camshaft timing oil control valve assembly. ES–110 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) (b) Engine Control Computer Using a tester, check whether there is continuity or a short between the engine control computer and the camshaft timing oil control valve assembly.(For terminal layout, see page ES - 16.) Standard Tester Connection (Terminal Symbol) Engine Control Computer ←→ Camshaft Timing Oil Control Valve Assembly 26 (OCV+) ←→ 1 (+) There is continuity and no short between the other terminals and body ground 25 (OCV-) ←→ 2 (-) There is continuity and no short between the other terminals and body ground OCV- ES OCV+ Oil Control Valve Vehicle Side Connector NG Standard REPAIR OR REPLACE WIRE HARNESS OR CONNECTOR A103589J02 OK 3 CHECK ENGINE CONTROL COMPUTER HINT: The communication between the engine control computer and the cam shaft oil control valves can be checked using the oscilloscope function of the DS-II. (a) Connect the DS-II between terminals 26 (OCV+) and 25 (OCV-) of the engine control computer connector. (For terminal layout, see page ES - 16.) Engine Control Computer OCV+ OCVA103583J06 (b) Set the DS-II to the oscilloscope function. (See the DS-II instruction manual for the setting procedures.) Item Tester Connection Tool setting Measurement Condition OCV+ ←→ OCV- Condition 5 V/DIV, 20 ms/DIV While engine is idling HINT: As the engine speed increases, the waveform cycle becomes shorter. A134292 NG CHECK AND REPLACE ENGINE CONTROL COMPUTER ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) ES–111 OK CHECK FOR INTERMITTENT PROBLEMS ES ES–112 ES ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) DTC U0101/82 EAT / CVT COMMUNICATION (RECEPTION) DTC U0121/86 ABC COMMUNICATION (RECEPTION) DTC U0156/87 METER COMMUNICATION (RECEPTION) DTC U1000/85 EAT COMMUNICATION (TRANSMISSION) DTC U1002/88 CAN COMMUNICATION DESCRIPTION Via CAN communication. the engine control computer sends and receives signals to and from the transmission control computer, the skid control computer and the combination meter. DTC Detection Condition 1.Diagnosis Condition 2.Malfunction Condition 3.Malfunction Time 4.Other DTC No. Suspected Area U0101/82 1. IG ON 2. CANH, CANL open or transmission control computer malfunction 3. 1 second 4. 1 trip • • Wire harness or connector Transmission control computer U0121/86 1. 2. 3. 4. IG ON CANH, CANL open 1 second 1 trip • Wire harness or connector U0156/87 1. 2. 3. 4. IG ON HCAN, LCAN open 1 second 1 trip • Wire harness or connector U1000/85 1. IG ON 2. CANH, CANL open or transmission control computer malfunction 3. 1 second 4. 1 trip • Wire harness or connector U1002/88 1. 2. 3. 4. • Wire harness or connector IG ON CANH, CANL open or short 1 second 1 trip ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) ES–113 CIRCUIT DIAGRAM Combination Meter CANH CANL CANH CANL ES Actuator Assembly CAN J/C CANH CANL CANH CANL CANH HCAN HCAN LCAN LCAN CANL Transmission Control Computer Engine Control Computer A138315J01 INSPECTION PROCEDURE 1 READ DTCs (a) Record the output DTCs. HINT: When CAN communication DTCs and related sensor DTCs are detected at the same time, troubleshoot the sensor DTCs after CAN communication has returned to its normal status. ES–114 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) GO TO TROUBLESHOOTING FOR CAN COMMUNICATION SYSTEM ES ES–115 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) FUEL PUMP CONTROL SYSTEM DESCRIPTION While the engine cranks, current flows from the ST terminal of the ignition switch to the starter relay coil, and from the ST terminal to the STSW terminal (STSW signal) of the engine control computer. When the STSW signal and N1 signal are input to the engine control computer, current flows to the fuel pump relay coil via an internal transistor. This turns the relay switch turns ON. The fuel pump receives current and operates. While N1 is input (with the engine running), the fuel pump continues to operate because the transistor switch inside the engine control computer remains ON (F/P relay ON). CIRCUIT DIAGRAM ES Engine Control Computer F/P Relay E/G 35 FC1* M Fuel Pump Ignition Switch EFI Relay 39 AM2 MRO EFI From Starter Circuit MAIN STSW N1+ From Crankshaft Sensor N1- Battery * : FAN 2 For Europe A138423J01 ES–116 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) INSPECTION PROCEDURE 1 PERFORM DS-II ACTIVE TEST (FUEL PUMP) (a) (b) ES Following the prompts on the DS-II screen, select the active test mode . Turn the ignition switch to the ON position, and perform the active test with the engine stopped. Standard: Fuel pump operates. NG GO TO STEP 7 NG CHECK, REPAIR OR REPLACE ECU POWER SOURCE SYSTEM OK 2 CHECK ECU POWER SUPPLY SYSTEM OK 3 CHECK FUEL PUMP RELAY (a) Check for continuity. (1) Using a tester, inspect the resistance between the terminals. Standard (2) A133875 NG OK Terminals Continuity 1←→2 Continuity 3←→5 No continuity Using a tester, make sure that there is continuity between terminals 3 and 5 when battery voltage is applied between terminals 1 and 2. Standard: Continuity REPLACE FUEL PUMP RELAY ES–117 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) 4 CHECK EFI RELAY (a) Check for continuity. (1) Using a tester, inspect the resistance between the terminals. Standard (2) A133875 NG Terminals Continuity 1←→2 Continuity 3←→5 No continuity Using a tester, make sure that there is continuity between terminals 3 and 5 when battery voltage is applied between terminals 1 and 2. Standard: Continuity REPLACE EFI RELAY OK 5 CHECK WIRE HARNESS AND CONNECTOR (ENGINE CONTROL COMPUTER F/P RELAY) (a) (b) (c) Engine Control Computer Disconnect the engine control computer connector D. Remove F/P relay. Using a tester, check for the continuity and short between the engine control computer and the relay block holder for the fuel pump relay. (For terminal layout, see page ES - 16.) Standard: Tester Connection (Terminal Symbol) Engine control computer ←→ Relay block holder for F/P relay Standard 35 (FC1*) ←→ 3 terminal Continuity and no short between other terminals and body ground FC (FAN 2 For Europe) *: FAN2 for European spec. NOTICE: Be careful not to damage the holder part by pressing it too hard, when inspecting by applying the tester probe to the holder. NG REPAIR OR REPLACE WIRE HARNESS OR CONNECTOR 2 5 3 1 A133876J02 OK 6 CHECK WIRING HARNESS OR CONNECTOR (a) (b) Remove EFI fuse, E/G fuse and relay (fuel pump relay, EFI relay). Using a tester, check for the continuity and short between terminals of each socket. ES ES–118 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) Standard: Tester Connection (Terminal Symbol) Standard F/P relay 2 terminal ←→ EFI relay 4 terminal Continuity and no short between other terminals and body ground F/P relay 1 terminal ←→ E/G fuse 2 terminal Continuity and no short between other terminals and body ground EFI relay 2 terminal ←→ EFI fuse 2 terminal Continuity and no short between other terminals and body ground EFI relay 1 terminal ←→ EFI fuse 2 terminal Continuity and no short between other terminals and body ground ES NOTICE: Be careful not to damage the holder part by pressing it too hard, when inspecting by applying the tester probe to the holder. NG REPAIR OR REPLACE WIRE HARNESS OR CONNECTOR OK CHECK AND REPLACE ENGINE CONTROL COMPUTER 7 CHECK FUEL PUMP (a) E 2 1 (b) 4 3 A134990 CHECK RESISTANCE (1) Using a tester, measure the resistance between terminal 3 (+) and 4 (-) of the fuel pump connector. Reference Value: 0.2 to 3.0 Ω (20 °C) CHECK OPERATION (1) Apply the battery voltage between terminal 3 (+) and 4 (-) of the fuel pump connector, and check the motor rotates. NOTICE: • Perform the check for a very short time (less than 10 seconds) • Keep the pump as far away from the battery as possible. • Make sure to perform the switching on the battery terminal side. NG REPLACE FUEL PUMP OK 8 CHECK WIRE HARNESS OR CONNECTOR (BETWEEN EFI CIRCUIT OPENNING RELAY AND FUEL PUMP) (a) (b) Disconnect the connector of fuel pump. Remove F/P relay. ES–119 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) (c) Fuel Pump Relay Vehicle Side Connector Using a tester, check for the continuity and short between relay block holder for F/P relay and fuel pump, and between fuel pump and body ground. Standard E 1 2 Tester Connection Relay Block Holder For EFI Relay ←→ Fuel Pump Standard 3←→3(+) There is continuity and no short between the other terminals and body ground Tester Connection Fuel Pump ←→ Body Ground Standard 3 4 4 (-) ←→ Body ground Continuity NOTICE: When applying the tester probe to the holder during inspection, be careful not to damage the holder part by pressing it too hard. 2 5 3 1 NG REPAIR OR REPLACE WIRE HARNESS OR CONNECTOR A138316J01 OK GO TO RELEVANT CIRCUIT INSPECTION SPECIFIED IN PROBLEM SYMPTOMS TABLE ES ES–120 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) ECU POWER SOURCE SYSTEM DESCRIPTION When the ignition switch is ON, current from the battery flows to the EFI relay coil, causing the EFI relay connection to close. Power is then supplied to the +B terminal of the engine control computer. CIRCUIT DIAGRAM Engine Control Computer ES E/G 120 IGSW Ignition Switch EFI Relay 27 39 AM2 +B MRO EFI MAIN 125 E1 Battery A138424 INSPECTION PROCEDURE 1 CHECK ENGINE CONTROL COMPUTER (CHECK VOLTAGE) (a) SST 09842-97209 Connect the SST (sub harness, EFI computer check) to the engine control computer. ES–121 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) (b) (c) Engine Control Computer Turn the ignition switch to the ON position. Measure the voltage between the terminals of the engine control computer connector using a tester.(For terminal layout, see page ES 16.) Standard Tester Connection (Terminal Symbol) 27 (+B) ←→ 125 (E1) +B OK E1 A133549J09 Standard 10 to 14V CHECK AND REPLACE ENGINE CONTROL COMPUTER ES NG 2 CHECK WIRE HARNESS OR CONNECTOR (ECU GROUND) (a) (b) (c) Engine Control Computer Disconnect the negative battery terminal. Disconnect connector B of the engine control computer. Measure the voltage between the engine control computer and the body ground using the tester. (For terminal layout, see page ES - 16.) Standard Tester Connection (Terminal Symbol) 125 (E1) ←→ Body ground NG E1 A133911J01 Standard Continuity REPAIR OR REPLACE WIRE HARNESS OR CONNECTOR OK 3 CHECK ENGINE CONTROL COMPUTER (CHECK VOLTAGE) SST 09842-97209 Connect the SST (sub harness, EFI computer check) to the engine control computer. (b) Turn the ignition switch to the ON position. (c) Measure the voltage between the terminals of the engine control computer connector using a tester. (For terminal layout, see page ES - 16.) (a) Engine Control Computer Standard Tester Connection (Terminal Symbol) 120 (IGSW) ←→ 125 (E1) E1 IGSW OK A133549J10 NG GO TO STEP 7 Standard 9 to 14 V ES–122 4 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) INSPECT FUSE (E/G) (a) Remove the E/G fuse, and check for continuity using a tester. Standard: Continuity NG E/G Fuse CHECK ALL WIRE HARNESSES DEVICES CONNECTED TO IGN FUSE AND ES A133912J01 OK 5 INSPECT FUSE (AM2) (a) Engine Room R/B Remove the AM2 fuse, and check for continuity using a tester. Standard: Continuity NG AM2 Fuse A134899J01 OK CHECK ALL WIRE HARNESSES DEVICES CONNECTED TO AM2 FUSE AND ES–123 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) 6 INSPECTION OF IGNITION (STARTER) SWITCH ASSEMBLY (a) Check for continuity. (1) Using the tester, check the continuity between each of the connecter terminals. Standard Switch Terminal No. Standard LOCK - No continuity Terminal 1 ←→ Terminal 3 ACC Terminal 1 ←→ terminal 2 ←→ terminal 3, terminal 5 ←→ terminal 6 ON Terminal 1 ←→ terminal 2, terminal 4 ←→ terminal 5 ←→ terminal 6 START NG Continuity Continuity Continuity REPLACE IGNITION (STARTER) SWITCH ASSEMBLY B059612 OK REPAIR OR REPLACE WIRE HARNESS OR CONNECTOR 7 CHECK ENGINE CONTROL COMPUTER (CHECK VOLTAGE) SST 09842-97209 Connect the SST (sub harness, EFI computer check) to the engine control computer. (b) Turn the ignition switch to the ON position. (c) Measure the voltage between the terminals of the engine control computer connector using a tester. (For terminal layout, see page ES - 16.) (a) Engine Control Computer Standard Tester Connection (Terminal Symbol) 39 (MRO) ←→ 125 (E1) E1 MRO A133549J13 OK NG Standard 9 to 14 V CHECK AND REPLACE ENGINE CONTROL COMPUTER ES ES–124 8 ENGINE CONTROL - EFI SYSTEM (3SZ-VE, K3-VE) INSPECT FUSE (EFI) (a) Engine Room R/B Remove the EFI fuse from the engine room R/B, and check for continuity using a tester. Standard: Continuity NG ES CHECK ALL WIRE HARNESSES DEVICES CONNECTED TO EFI FUSE AND EFI Fuse A133909J01 OK 9 CHECK EFI COMPUTER RELAY (a) Check for continuity. (1) Using a tester, inspect the resistance between the terminals. Standard Terminals (2) A133875 NG Continuity 1←→2 Continuity 3←→5 No continuity Using a tester, make sure that there is continuity between terminals 3 and 5 when battery voltage is applied between terminals 1 and 2. Standard: Continuity REPLACE EFI COMPUTER RELAY OK 10 CHECK WIRE HARNESS OR CONNECTOR (BETWEEN MRO AND GROUND) (a) (b) (c) Engine Control Computer Disconnect the negative battery terminal. Disconnect connector C of the engine control computer. Measure the continuity between the engine control computer terminal and the body ground using the tester. (For terminal layout, see page ES - 16.) Standard Tester Connection (Terminal Symbol) 39 (MRO) ←→ Body ground MRO A133913J01 OK CHECK FOR INTERMITTENT PROBLEMS NG Standard Continuity REPAIR OR REPLACE WIRE HARNESS OR CONNECTOR ENGINE CONTROL - THROTTLE BODY ASSEMBLY (3SZ-VE) ES–125 THROTTLE BODY ASSEMBLY (3SZ-VE) ENGINE CONTROL COMPONENTS ACCELERATOR CONTROL BATTERY CLAMP T=3.5{36} CABLE ASSEMBLY BATTERY T=8.5{87} ES ×3 BATTERY CARRIER ENGINE UNDER COVER ×11 T=5.4{55} TIGHTENING TORQUE [N*m{kgf*cm}] A137009J01 ES–126 ENGINE CONTROL - THROTTLE BODY ASSEMBLY (3SZ-VE) AIR CLEANER ASSEMBLY ES T=7.5{76} COOLANT BYPASS HOSE NO. 2 ×2 O-RING T=18{184} COOLANT T=7.5{76} BYPASS HOSE T=7.5{76} T=21{214} ×2 AIR CLEANER HOSE NO. 1 O-RING THROTTLE BODY ASSEMBLY ×2 T=7.5{76} VENTILATION HOSE NO. 2 THROTTLE BODY BRACKET NO. 2 TIGHTENING TORQUE [N*m{kgf*cm}] NON-REUSEABLE PART A137008J02 ES–127 ENGINE CONTROL - THROTTLE BODY ASSEMBLY (3SZ-VE) REMOVAL Blue Paint 1. DISCONNECT NEGATIVE BATTERY TERMINAL (See page RS-164.) 2. REMOVE ENGINE UNDER COVER 3. DRAIN ENGINE COOLANT (See page CO-9) 4. REMOVE AIR CLEANER HOSE NO.1 (See page CO-15) 5. REMOVE AIR CLEANER ASSEMBLY (See page EM-146) 6. DISCONNECT ACCELERATOR CONTROL CABLE (See page EM-147) 7. REMOVE VENTILATION HOSE NO.2 (See page EM-147) 8. DISCONNECT WATER BY-PASS HOSE (a) Disengage the clamps and disconnect the water by-pass hose. 9. DISCONNECT WATER BY-PASS HOSE NO.2 (a) Disengage the clamps and disconnect water by-pass hose No.2. 10. REMOVE THROTTLE BODY ASSEMBLY (a) Disconnect the connector of the throttle body assembly and the wire harness clamps. ASSEMBLY A131806 Red Paint A134985 ISC Connector Throttle Sensor Connector A136086 ES ES–128 ENGINE CONTROL - THROTTLE BODY ASSEMBLY (3SZ-VE) (b) (c) (d) Remove the 2 bolts and throttle body bracket No.2. Remove the 3 bolts and the throttle body assembly. Remove the O-rings. A131805 ES INSTALLATION 1. INSTALL THROTTLE BODY ASSEMBLY (a) Install a new O-ring. (b) Install the throttle body assembly with the 3 bolts. Torque: 21 N*m (214 kgf*cm) Throttle body bracket side 7.5 N*m (77 kgf*cm) Intake manifold side (c) Install throttle body bracket No.2 with the 2 bolts. Torque: 7.5 N*m (76 kgf*cm) (d) Connect the connectors to the throttle body assembly. A131805 ISC Connector Throttle Sensor Connector A136086 Red Paint A134985 2. CONNECT WATER BY-PASS HOSE (a) Connect the water by-pass hose and install the clamp. ENGINE CONTROL - THROTTLE BODY ASSEMBLY (3SZ-VE) Blue Paint A131806 ES–129 3. CONNECT WATER BY-PASS HOSE NO.2 (a) Connect water by-pass hose No.2 and install the clamp. 4. INSTALL VENTILATION HOSE NO.2 (See page EM-166) 5. INSTALL ACCELERATOR CONTROL CABLE ASSEMBLY (See page EM-165) 6. INSTALL AIR CLEANER ASSEMBLY (See page EM-167) 7. INSTALL AIR CLEANER HOSE NO.1 (See page CO-19) 8. ADD COOLANT (See page CO-9) 9. CHECK FOR COOLANT LEAKS (See page CO-10) 10. INSTALL ENGINE UNDER COVER (See page EM-69) 11. CONNECT NEGATIVE BATTERY TERMINAL Torque: 5.4 N*m (55 kgf*cm) 12. PERFORM INTIALIZATION (See page SS-10.) INSPECTION 1. INSPECT THROTTLE BODY ASSEMBLY (a) Check that the throttle shaft is not loose. (b) Check that none of the ports is clogged. (c) Check that the throttle valve can open and close smoothly. (d) Check that there is no clearance between the throttle stop screw and the lever when the throttle valve is fully open. ES ES–130 ENGINE CONTROL - KNOCK CONTROL SENSOR (3SZ-VE) KNOCK CONTROL SENSOR (3SZ-VE) ENGINE CONTROL COMPONENTS ACCELERATOR CONTROL BATTERY CLAMP T=3.5{36} CABLE ASSEMBLY BATTERY ES T=8.5{87} ×3 BATTERY CARRIER ENGINE UNDER COVER ×11 T=5.4{55} TIGHTENING TORQUE [N*m{kgf*cm}] A137009J01 ES–131 ENGINE CONTROL - KNOCK CONTROL SENSOR (3SZ-VE) AIR CLEANER ASSEMBLY T=7.5{76} ×2 COOLANT PIPE HOSE NO. 2 O-RING ES T=18{184} T=7.5{76} AIR CLEANER T=7.5{76} ×2 COOLANT PIPE HOSE HOSE NO. 1 T=21{214} ×2 T=7.5{76} ×2 THROTTLE BODY GASKET O-RING T=19{194} ×2 T=19{194} ×3 THROTTLE BODY GASKET NO. 2 VENTILATION HOSE NO. 2 T=21{214} ×2 VACUUM HOSE ASSEMBLY OIL LEVEL GAUGE GUIDE INTAKE MANIFOLD TO INTAKE MANIFOLD T=8.5{87} HEAD GASKET NO. 1 VENTILATION HOSE TIGHTENING TORQUE [N*m{kgf*cm}] O-RING NON-REUSEABLE PART A137017J01 ES–132 ENGINE CONTROL - KNOCK CONTROL SENSOR (3SZ-VE) FUEL DELIVERY PIPE T=21{214} ES ×2 FUEL HOSE NO. 1 ×4 O-RING ×4 ×4 INJECTOR VIBRATION INSULATOR FUEL INJECTOR ASSEMBLY T=20{204} KNOCK CONTROL SENSOR TIGHTENING TORQUE [N*m{kgf*cm}] NON-REUSEABLE PART A137018J01 ES–133 ENGINE CONTROL - KNOCK CONTROL SENSOR (3SZ-VE) REMOVAL 1. DISCONNECT NEGATIVE BATTERY TERMINAL (See Page RS-164) 2. DRAIN ENGINE COOLANT (See page CO-9) 3. DISCHARGE FUEL SYSTEM PRESSURE (See page EM-146) 4. REMOVE BATTERY 5. REMOVE BATTERY CARRIER (See page EM-146) 6. REMOVE ENGINE UNDER COVER 7. REMOVE AIR CLEANER HOSE NO.1 (See page CO-15) 8. REMOVE AIR CLEANER ASSEMBLY (See page EM-146) 9. DISCONNECT ACCELERATOR CONTROL CABLE (See page EM-147) 10. REMOVE VENTILATION HOSE (See page EM-147) 11. REMOVE VENTILATION HOSE NO.2 (See page EM-147) 12. DISCONNECT FUEL HOSE NO.1 (See page FU-10) 13. REMOVE FUEL DELIVERY PIPE (See page FU-10) 14. DISCONNECT WATER BY-PASS HOSE NO.2 (See page ES-127) 15. DISCONNECT WATER BY-PASS HOSE (See page ES-127) 16. REMOVE THROTTLE BODY ASSEMBLY (See page ES-127) 17. REMOVE THROTTLE BODY BRACKET (See page EM-149) 18. REMOVE OIL LEVEL GAUGE GUIDE (See page EM-148) 19. DISCONNECT VACUUM HOSE ASSEMBLY 20. REMOVE INTAKE MANIFOLD (See page EM-149) 21. REMOVE KNOCK CONTROL SENSOR (a) Disconnect the connector. (b) A107018 ASSEMBLY Remove the nut, then remove the knock control sensor. ES ES–134 ENGINE CONTROL - KNOCK CONTROL SENSOR (3SZ-VE) INSTALLATION 45° 15° ES 15° 1. INSTALL KNOCK CONTROL SENSOR (a) Install the knock control sensor with the nut in the direction shown in the illustration. Torque: 20 N*m (204 kgf*cm) (b) Connect the connector. 2. INSTALL INTAKE MANIFOLD (See page EM-164) 3. INSTALL THROTTLE BODY ASSEMBLY (See page EM-164) 4. INSTALL FUEL INJECTOR ASSEMBLY (See page FU-11) 5. INSTALL FUEL DELIVERY PIPE (See page FU-11) 6. INSTALL OIL LEVEL GAUGE GUIDE (See page EM-58) 7. CONNECT FUEL HOSE NO.1 (See page FU-12) 8. CONNECT ACCELERATOR CONTROL CABLE ASSEMBLY (See page EM-165) 9. INSTALL VENTILATION HOSE (See page EM-166) 10. INSTALL VENTILATION HOSE NO.2 (See page EM-166) 11. INSTALL BATTERY CARRIER (See page EM-167) 12. INSTALL BATTERY 13. CONNECT NEGATIVE BATTERY TERMINAL (See page EM-167) 14. INSTALL AIR CLEANER ASSEMBLY (See page EM-167) 15. INSTALL AIR CLEANER HOSE NO.1 (See page CO-19) 16. ADD COOLANT (See page CO-9) 17. CHECK FOR COOLANT LEAKS (See page CO-10) 18. CHECK COOLANT (See page CO-10) 19. PERFORM INITIALIZATION (See page SS-10.) A107019J01 INSPECTION 1. A065174J01 CHECK KNOCK CONTROL SENSOR (a) Check the resistance. (1) Using a tester, measure the resistance between the connector terminals. Standard: 120 to 280 Ω ENGINE CONTROL - CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (3SZ-VE) ES–135 CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (3SZ-VE) ENGINE CONTROL COMPONENTS ES CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY O-RING T=7.5{76} ES–136 ENGINE CONTROL - CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (3SZ-VE) REMOVAL 1. REMOVE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (a) Disconnect the connector. (b) Remove the bolt, then remove the camshaft timing oil control valve assembly. ES A136191 INSTALLATION 1. INSTALL CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (a) Apply engine oil to a new O-ring. (b) (c) Install the camshaft timing oil control valve assembly with the bolt. Torque: 7.5 N*m (76 kgf*cm) Connect the connector. A136191 ON-VEHICLE INSPECTION 1. CHECK CAMSHAFT OIL CONTROL VALVE ASSEMBLY OPERATION (a) Connect the DS-II to the DLC. (b) Warm up the engine. (c) Following the prompts on the screen, select ACTIVE TEST, then VVT CONTROL and check the idling speed in both the INACTIVE or ACTIVE modes. Standard Item Standard Inactive (OCV OFF) Normal engine speed Active (OCV ON) Rough idle or engine stop ENGINE CONTROL - CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (3SZ-VE) (d) ES–137 Following the prompts on the screen, select ACTIVE TEST, then VVT LINEAR DRIVE BANK 1 and check the idling speed at the max retard angle (-100%). Standard Item Standard When normal Normal engine speed Max retard angle (-100%) Rough idle or engine stop INSPECTION 1. 6.9 to 7.9 Ω (when 20°C) Side (b) Side Current Applied Current Not Applied Valve CHECK CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (a) Check the resistance. (1) Using a tester, measure the resistance between the terminals. Standard: A136208 Check operation. (1) Apply battery voltage across the terminals, then check that the spool valve operates. NOTICE: Make sure the spool valve is not stuck. HINT: If the spool valve does not return due to foreign matter like sludge, the pressure may leak slightly toward the advanced side. This leakage may cause DTCs to be recorded. ES ES–138 ENGINE CONTROL - ENGINE CONTROL COMPUTER (3SZ-VE) ENGINE CONTROL COMPUTER (3SZ-VE) ENGINE CONTROL COMPONENTS ES GLOVE COMPARTMENT DOOR ASSEMBLY ENGINE CONTROL COMPUTER BRACKET NO. 1 ENGINE CONTROL COMPUTER ASSEMBLY ENGINE CONTROL COMPUTER BRACKET NO. 2 COWL SIDE TRIM BOARD LH INSTRUMENT PANEL UNDER COVER NO. 2 FRONT DOOR SCUFF PLATE LH A137037J01 ENGINE CONTROL - ENGINE CONTROL COMPUTER (3SZ-VE) ES–139 REMOVAL 1. DISCONNECT NEGATIVE BATTERY TERMINAL (See page RS-164.) 2. REMOVE GLOVE COMPARTMENT DOOR ASSEMBLY ( See page IP-11) 3. INSTALL INSTRUMENT PANEL UNDER COVER NO.2 ( See page IP-12) 4. REMOVE FRONT DOOR SCUFF PLATE LH 5. REMOVE COWL SIDE TRIM BOARD LH 6. REMOVE ENGINE CONTROL COMPUTER (a) Remove each connector. (b) Remove the 2 bolts and the engine control computer. NOTICE: Be careful not to drop the engine control computer. 7. REMOVE ENGINE CONTROL COMPUTER BRACKET NO.1 (a) Disengage the claw and remove engine control computer bracket No.1 from the engine control computer. 8. REMOVE ENGINE CONTROL COMPUTER BRACKET NO.2 (a) Disengage the claw and remove engine control computer bracket No.2 from the engine control computer. INSTALLATION 1. INSTALL ENGINE CONTROL COMPUTER BRACKET NO.2 (a) Install engine control computer bracket No.2 to the engine control computer. 2. INSTALL ENGINE CONTROL COMPUTER BRACKET NO.1 (a) Install engine control computer bracket No.1 to the engine control computer 3. INSTALL ENGINE CONTROL COMPUTER (a) Install the engine control computer with the 2 bolts. (b) Connect each connector. 4. INSTALL COWL SIDE TRIM BOARD LH 5. INSTALL FRONT DOOR SCUFF PLATE LH 6. INSTALL INSTRUMENT PANEL UNDER COVER NO.2 ( See page IP-17) 7. INSTALL GLOVE COMPARTMENT DOOR ASSEMBLY ( See page IP-18) 8. CONNECT NEGATIVE BATTERY TERMINAL Torque: 5.4 N*m (55 kgf*cm) 9. PERFORM INITIALIZATION (See page SS-10.) ES ES–140 ENGINE CONTROL - E.F.I. WATER TEMPERATURE (3SZ-VE) E.F.I. WATER TEMPERATURE (3SZ-VE) ENGINE CONTROL INSPECTION 1. CHECK EFI COOLANT TEMPERATURE (a) Check the resistance. (1) Using a tester, measure the resistance between the terminals. Standard Measurement Condition ES Standard When approx. 20°C 2.32 to 2.59 kΩ When approx. 80°C 0.310 to 0.326 kΩ NOTICE: Make sure that the terminal area does not get wet when applying the sensor to water during inspection.Wipe the sensor dry after the check. Resistance [kΩ] Temperature [°C] A050330J09 ES–141 ENGINE CONTROL - E.F.I. COMPUTER RELAY (3SZ-VE) E.F.I. COMPUTER RELAY (3SZ-VE) ENGINE CONTROL INSPECTION 1. EFI COMPUTER RELAY (a) Check for continuity. (1) Using the SST (electrical tester), check the continuity between the terminals of the connector. Standard Terminals Continuity 1←→2 Continuity 3←→5 No continuity (2) A133875 Using a tester, make sure that there is continuity between terminals 3 and 5 when battery voltage is applied between terminals 1 and 2. Standard: Continuity ES ES–142 ENGINE CONTROL - THROTTLE POSITION SENSOR (3SZ-VE) THROTTLE POSITION SENSOR (3SZ-VE) ENGINE CONTROL INSPECTION 1. CHECK RESISTANCE (a) Disconnect the throttle position sensor connector. (b) Throttle Position Sensor Using a tester, measure the resistance between the throttle position sensor connector terminals. Standard Tester Connection (Terminal Symbol) ES 3 2 Throttle Valve 1 (VC) ←→ 3 (VTH) 3 (VTH) ←→ 2 (E2) 1 3 (VTH) ←→ 2 (E2) - 2.5 to 5.9 kΩ Fully Closed 0.2 to 5.7 kΩ Fully open 2.0 to 10.2 kΩ VC VTH E2 A133573J01 TO INDEX Resistance TO NEXT SECTION