DTC Troubleshooting

DTC P0462: Fuel Level Sensor (Fuel Gauge Sending Unit) Circuit Low Voltage ('05-07 models)

NOTE:
- Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information.
- Information marked with an asterisk (*) applies to '05 model.
- Information marked with double asterisk (* *) applies to '06-07 models.

1. Turn the ignition switch ON (II).
2. Clear the DTC with the HDS, and wait 5 seconds.
3. Check for Temporary DTCs or DTCs with the HDS.

Is DTC P0462 indicated?

YES - Go to step 4.

NO - Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the gauge control module and the fuel gauge sending unit.

4. Turn the ignition switch OFF.
5. Remove the spare tire lid.
6. Remove the access panel from the floor.
7. Disconnect the fuel tank unit 5P connector.
8. Turn the ignition switch ON (II).
9. Clear the DTC with the HDS, and wait 5 seconds.
10. Check for Temporary DTCs or DTCs with the HDS.

Is DTC P0463 indicated?

YES - Replace the fuel gauge sending unit, then go to step 22.

NO - Go to step 11.

11. Turn the ignition switch OFF.
12. Remove the gauge control module.
13. Disconnect the gauge control module 30P* (36P)** connector.




14. Check for continuity between fuel tank unit 5P connector terminal No. 2 and body ground.

Is there continuity?

YES - Repair short in the wire between the gauge control module (signal line) and the fuel gauge sending unit, then go to step 23.

NO - Go to step 15.

15. Reconnect the gauge control module 30P* (36P**) connector.
16. Remove the fuel tank unit.
17. Connect the fuel tank unit 5P connector.
18. Turn the ignition switch ON (II).
19. Clear the DTC with the HDS.




20. Set the float (A) to the E position.
21. Check the fuel gauge.

Does the gauge move to the empty position?

YES - Go to step 29.

NO - Replace the gauge control module, then go to step 22.

22. Turn the ignition switch OFF.
23. Install the parts in the reverse order of removal.
24. Reconnect all connectors.
25. Turn the ignition switch ON (II).
26. Reset the ECM/PCM with the HDS.
27. Do the ECM/PCM idle learn procedure. Programming and Relearning
28. Check for Temporary DTCs or DTCs with the HDS.

Is DTC P0462 indicated?

YES - Check for poor connections or loose terminals at the gauge control module and the fuel gauge sending unit, then go to step 1.

NO - Troubleshooting is complete. If any other Temporary DTCs or DTCs are indicated, go to the indicated DTC's troubleshooting.

29. Install the parts in the reverse order of removal.
30. Reconnect all connectors.
31. Update the ECM/PCM if it does not have the latest software, or substitute a known-good ECM/PCM.
32. Check for Temporary DTCs or DTCs with the HDS.

Is DTC P0462 indicated?

YES - Check for poor connections or loose terminals at the gauge control module and the fuel gauge sending unit. If the ECM/PCM was updated, substitute a known-good ECM/PCM, then recheck. If the ECM/PCM was substituted, go to step 1.

NO - If the ECM/PCM was updated, troubleshooting is complete. If the ECM/PCM was substituted, replace the original ECM/PCM. If any other Temporary DTCs or DTCs are indicated, go to the indicated DTC's troubleshooting.