[13B] MULTIPORT FUEL INJECTION (MPI) <4G64> - - TROUBLESHOOTING - SYMPTOM PROCEDURES - Inspection Procedure 14: The Feeling of Impact or Vibration when Decelerating | PRINT PAGE / INDEX / PRIOR / NEXT

Inspection Procedure 14: The Feeling of Impact or Vibration when Decelerating
COMMENT ON TROUBLE SYMPTOM Failure is possibly caused by insufficient air intake due to failed idle speed control system.
PROBABLE CAUSE Failed idle speed control system Throttle valve body fouled 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 idle speed control servo for operating sound. Check idle speed control servo for operating sound (Refer to ). Q: Is the check result normal? YES: Go to Step 3 . NO: Check idle speed control servo system (Refer to Inspection Procedure 30 ).
| STEP 3. MUT-II/III data list Refer to Data list reference table . Item 14: Throttle position sensor Q: Are the check results normal? YES: Go to Step 4 . NO: Check throttle position sensor system (Refer to Code No. 14 ).
| STEP 4. Check throttle body (throttle valve) contamination. Q: Is the check result normal? YES: Replace engine-A/T-ECU. NO: Clean throttle body (throttle valve portion) (Refer to ).

[13B] MULTIPORT FUEL INJECTION (MPI) <4G64> - - TROUBLESHOOTING - SYMPTOM PROCEDURES - Inspection Procedure 14: The Feeling of Impact or Vibration when Decelerating | PRINT PAGE / INDEX / PRIOR / NEXT

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