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 | DTC check
Is there DTC(s) other than P0101? |
Go to applicable DTC(s). | Go to Step 3. |
| 3 | Exhaust system and air intake system check
Are they in good condition? |
Go to Step 4. | Repair or replace defective part. |
| 4 | MAF sensor power supply circuit check
Is it in good condition? |
Go to Step 5. | Repair or replace defective wire harness. |
| 5 | MAF sensor ground circuit check
Is it in good condition? |
Go to Step 6. | Repair or replace "A3" circuit. |
| 6 | MAF sensor signal circuit check
Are they in good condition? |
Go to Step 7. | Repair or replace defective wire harness. |
| 7 | MAF sensor check
Is it in good condition? |
Go to Step 8. | Replace MAF & IAT sensor, see MAF AND IAT SENSOR REMOVAL AND INSTALLATION . |
| 8 | Throttle body assembly check
Is it in good condition? |
Replace ECM and recheck DTC, see ECM REMOVAL AND INSTALLATION . | Replace throttle body assembly, see THROTTLE BODY ASSEMBLY REMOVAL AND INSTALLATION . |