[13C] MULTIPORT FUEL INJECTION (MPI) <4G69> - - TROUBLESHOOTING - SYMPTOM PROCEDURES - Inspection Procedure 18: Odor, White Smoke, Black Smoke, and High-Concentration CO/HC during Idling | PRINT PAGE / INDEX / PRIOR / NEXT

Inspection Procedure 18: Odor, White Smoke, Black Smoke, and High-Concentration CO/HC during Idling
COMMENT ON TROUBLE SYMPTOM Failure is possibly caused by improper air-fuel ratio, deteriorated catalyst, failed ignition system, failed fuel system, failed compression pressure or other faults.
PROBABLE CAUSE Incorrect air/fuel ratio Failed ignition system Failed fuel system Failed intake and exhaust system Failed emission control system Failed compression pressure Failed catalytic converter Failed engine-A/T-ECU
| DIAGNOSIS PROCEDURE
| STEP 1. MUT-II/III diagnosis code Q: Diagnosis code set? YES: Inspection chart for diagnosis code (Refer to ). NO: Go to Step 2 .
| STEP 2. Check injector for operating sound. Check injector for operating sound (Refer to ). Q: Can operating sound be heard? YES: Go to Step 3 . NO: Check the injector system of the defective cylinder. (Refer to, Code No. P0201: No. 1 injector system ). (Refer to, Code No. P0202: No. 2 injector system ). (Refer to, Code No. P0203: No. 3 injector system ). (Refer to, Code No. P0204: No. 4 injector system ).
| STEP 3. Check ignition timing. Check ignition timing. (Refer to GROUP 11E - On-vehicle Service - Ignition Timing Check ). Q: Is the check result normal? YES: Go to Step 4 . NO: Check for offset ignition timing (Refer to Inspection Procedure 17 ).
| STEP 4. MUT-II/III data list Refer to Data List Reference Table . Item 12: Air flow sensor Item 13: Intake air temperature sensor Item 21: Engine coolant temperature sensor Item 95: Manifold absolute pressure sensor Q: Are the check results normal? YES: Go to Step 5 . NO: Perform the diagnosis code classified check Procedure for the sensor that has shown an abnormal data value (Refer to Inspection Chart for Diagnosis Code ).
| STEP 5: MUT-II/III data list Refer to Data List Reference Table . Item 25: Barometric pressure sensor Q: Are the check results normal? YES: Go to Step 6 . NO: Replace engine-A/T-ECU.
| STEP 6. Check air intake from intake hose and inlet manifold. Q: Is the check result normal? YES: Go to Step 7 . NO: Repair.
| STEP 7. Check for emission leakage from exhaust manifold. Q: Is the check result normal? YES: Go to Step 8 . NO: Repair.
| STEP 8. Check throttle body (throttle valve portion) for contamination. Q: Is the check result normal? YES: Go to Step 9 . NO: Clean throttle body (throttle valve portion) (Refer to ).
| STEP 9. MUT-II/III data list Refer to Data list reference table . Item 11: Oxygen sensor Item 39: Cylinder 2, 3 oxygen sensor (front) <Vehicles for Hong kong> Item 59: Oxygen sensor Item 69: Cylinder 2, 3 oxygen sensor (rear) <Vehicles for Hong kong> Q: Is the check result normal? YES: Go to Step 10 . NO: Perform the diagnosis code classified check Procedure for the sensor that has shown an abnormal data value (Refer to Inspection Chart for Diagnosis Code ).
| STEP 10. Check Purge control solenoid valve itself. Check purge control solenoid valve itself (Refer to GROUP 17 - Emission Control System - Evaporative Emission Control System - Purge Control Solenoid Valve Check ). Q: Is the check result normal? YES: Go to Step 11 . NO: Replace purge control solenoid valve.
| STEP 11. Check EGR valve (stepper motor) itself. Check EGR valve (stepper motor) itself [Refer to GROUP 17 - Emission Control System - Exhaust Gas Recirculation (EGR) System - EGR Valve (Stepper Motor) Check <4G69>]. Q: Is the check result normal? YES: Go to Step 12 . NO: Replace EGR valve (stepper motor).
| STEP 12. Measure fuel pressure. Measure fuel pressure (Refer to ). Q: Is the check result normal? YES: Go to Step 13 . NO: Repair.
| STEP 13. Check positive crankcase ventilation valve itself. Check positive crankcase ventilation valve itself (Refer to GROUP 17 - Emission Control System - crankcase Emission Control System - Positive Crankcase Ventilation (PCV) Valve Check ). Q: Is the check result normal? YES: Go to Step 14 . NO: Replace positive crankcase ventilation valve.
| STEP 14. Check spark plug. Q: Is the check result normal? YES: Go to Step 15 . NO: Replace spark plug.
| STEP 15. Check ignition coil itself. Check ignition coil itself (Refer to GROUP 16 - Ignition System - On-vehicle Service - Ignition Coil Check <4G69>). Q: Is the check result normal? YES: Go to Step 16 . NO: Replace ignition coil.
| STEP 16. Check compression pressure. Check compression pressure (Refer to GROUP 11E - On-vehicle Service - Compression Pressure Check ). Q: Is the check result normal? YES: Go to Step 17 . NO: Repair.
| STEP 17. Check injector for spraying condition. Check each injector for spray condition (Refer to ). Q: Does trouble symptom persist? YES: Go to Step 18 . NO: Replace injector.
| STEP 18. Replace catalytic converter. After replacing the catalytic converter, re-check the trouble symptoms. Q: Does trouble symptom persist? YES: Replace engine-A/T-ECU. NO: Check end.

[13C] MULTIPORT FUEL INJECTION (MPI) <4G69> - - TROUBLESHOOTING - SYMPTOM PROCEDURES - Inspection Procedure 18: Odor, White Smoke, Black Smoke, and High-Concentration CO/HC during Idling | PRINT PAGE / INDEX / PRIOR / NEXT

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