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 P2404? |
Go to troubleshooting for applicable DTC(s). | Go to Step 3. |
| 3 | EVAP leak detection pump and its circuit check
Are they in good condition? |
Go to Step 7. | Repair or replace defective wire harness. |
| 4 | EVAP vent valve circuit check
Are they in good condition? |
Go to Step 5. | Repair or replace defective wire harness. |
| 5 | EVAP leak check module check
Are they in good condition? |
Go to Step 6. | Replace EVAP leak check module, see EVAP CANISTER REMOVAL AND INSTALLATION . |
| 6 | Wire harness check
Is DTC P2404 detected again? |
Replace ECM and recheck DTC, see ECM REMOVAL AND INSTALLATION . | Intermittent trouble. |