[13B] MULTIPORT FUEL INJECTION (MPI) <4G64> - - TROUBLESHOOTING - SYMPTOM PROCEDURES - Inspection Procedure 15: Knocking | PRINT PAGE / INDEX / PRIOR / NEXT

Inspection Procedure 15: Knocking
COMMENT ON TROUBLE SYMPTOM Failure is possibly caused by failed detonation control, improper thermal value of spark plug or other faults.
PROBABLE CAUSE Failed detonation control system Failed ignition system 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. Connector check: B-110 and B-111 ignition coil connectors
| Q: Is the check result normal? YES: Go to Step 3 . NO: Repair.
| STEP 3. Check ignition coil spark. Q: Is the check result normal? YES: Check detonation sensor (Refer to Code No. 31 ). NO: Go to Step 4 .
| STEP 4. Check spark plug. Q: Is the check result normal? YES: Go to Step 5 . NO: Replace spark plug.
| STEP 5. Check spark plug cable itself. Check spark plug cable itself (Refer to GROUP 16 -Ignition System - On-vehicle Service ). Q: Is the check result normal? YES: Go to Step 6 . NO: Replace spark plug cable.
| STEP 6. Check ignition coil itself. Check ignition coil itself (Refer to GROUP 16 - Ignition System - On-vehicle Service ). Q: Is the check result normal? YES: Go to Step 7 . NO: Replace ignition coil.
| STEP 7. Check harness between ignition coil connector terminal No. 2 of each cylinder and body earth.
| Check earthing line for open circuit and damage. Q: Is the check result normal? YES: Check and repair harness between ignition coil connector terminal No. 3 of each cylinder and C-112 engine-A/T-ECU connector. Check signal line for open/short circuit and damage. NO: Repair.

[13B] MULTIPORT FUEL INJECTION (MPI) <4G64> - - TROUBLESHOOTING - SYMPTOM PROCEDURES - Inspection Procedure 15: Knocking | PRINT PAGE / INDEX / PRIOR / NEXT

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