| DTC P250A: | Engine Oil Level Sensor Circuit Malfunction |
| 1. | Turn the ignition switch ON (II). |
| 2. | Clear the DTC with the HDS. |
| 3. | Wait 5 seconds. |
| 4. | Check for Temporary DTCs or DTCs with the HDS. Is DTC P250A indicated? YES - Go to 5. NO - Intermittent failure, system is OK at this time. Check for poor connections or loose terminals at the engine oil level sensor and the ECM/PCM.n |
| 5. | Turn the ignition switch OFF. |
| 6. | Disconnect the engine oil level sensor 3P connector. |
| 7. | Turn the ignition switch ON (II). |
| 8. | Measure voltage between engine oil level sensor 3P connector terminal No. 3 and body ground.
Is there battery voltage? YES - Go to 9. NO - Repair open in the wire between the engine oil level sensor and the No. 15 OIL LVL (7.5 A) fuse then go to 19. |
| 9. | Check for continuity between engine oil level sensor 3P connector terminal No. 2 and body ground.
Is there continuity? YES - Go to 10. NO - Repair open in the wire between the engine oil level sensor and G101, then go to 19. |
| 10. | Measure voltage between engine oil level sensor 3P connector terminal No. 1 and body ground.
Is there battery voltage? YES - Go to 17. NO - Go to 11. |
| 11. | Turn the ignition switch OFF. |
| 12. | Jump the SCS line with the HDS. |
| 13. | Disconnect ECM/PCM connector C (44P). |
| 14. | Check for continuity between ECM/PCM connector terminal C37 and body ground.
Is there continuity? YES - Repair short in the wire between the ECM/PCM (C37) and the engine oil level sensor, then go to 19. NO - Go to 15. |
| 15. | Connect engine oil level sensor 3P connector terminal No. 1 to body ground with a jumper wire.
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| 16. | Check for continuity between ECM/PCM connector terminal C37 and body ground.
Is there continuity? YES - Go to 24. NO - Repair open in the wire between the ECM/PCM (C37) and the engine oil level sensor, then go to 19. |
| 17. | Turn the ignition switch OFF. |
| 18. | Replace the engine oil level sensor. |
| 19. | Reconnect all connectors. |
| 20. | Turn the ignition switch ON (II). |
| 21. | Reset the ECM/PCM with the HDS. |
| 22. | Do the ECM/PCM idle learn procedure. |
| 23. | Check for Temporary DTCs or DTCs with the HDS. Are any Temporary DTCs or DTCs indicated? YES - If DTC P250A is indicated, check for poor connections or loose terminals at the engine oil level sensor and the ECM/PCM, then go to 1. If any other Temporary DTCs or DTCs are indicated, go to the indicated DTC's troubleshooting. NO - Troubleshooting is complete.n |
| 24. | Update the ECM/PCM if it does not have the latest software, or substitute a known-good ECM/PCM. |
| 25. | Check for Temporary DTCs or DTCs with the HDS. Are any Temporary DTCs or DTCs indicated? YES - If DTC P250A is indicated, check for poor connections or loose terminals at the engine oil level sensor and the ECM/PCM, then go to 1. If any other Temporary DTCs or DTCs are indicated, go to the indicated DTC's troubleshooting. NO - If the ECM/PCM was updated, troubleshooting is complete. If the ECM/PCM was substituted, replace the original ECM/PCM.n |