DTC Troubleshooting
DIAGNOSTIC PROCEDURES CHART
| Step | Action | YES | NO |
|---|---|---|---|
| 1 | Was "Engine and Emission Control System Check" performed? | Go to Step 2. | Go to ENGINE AND EMISSION CONTROL SYSTEM CHECK . |
| 2 | Exhaust system for leakage check
Is it in good condition? |
Go to Step 3. | Repair or replace defective parts. |
| 3 | HO2S check
Is it in good condition? |
Replace ECM and recheck DTC, see ECM REMOVAL AND INSTALLATION . | Replace HO2S, see A/F SENSOR AND HO2S REMOVAL AND INSTALLATION . |