DTC Troubleshooting

DTC P0463: Fuel Level Sensor (Fuel Gauge Sending Unit) Circuit High Voltage ('06-07 models)

NOTE: Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information.

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 P0463 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 trunk floor trim panel.
6. Remove the access panel from the floor.
7. Disconnect the fuel tank unit 5P connector.




8. Connect fuel tank unit 5P connector terminal No. 1 to body ground with a jumper wire.
9. Remove the gauge control module.
10. Disconnect the gauge control module connector B (18P).




11. Check for continuity between gauge control module connector B (18P) terminal No. 17 and body ground.

Is there continuity?

YES - Go to step 12.

NO - Repair open in the wire between the gauge control module (GND line) and the fuel gauge sending unit, then Go to step 24.




12. Connect fuel tank unit 5P connector terminal No. 2 to body ground with a jumper wire.




13. Check for continuity between gauge control module connector B (18P) terminal No. 16 and body ground.

Is there continuity?

YES - Go to step 14.

NO - Repair open in the wire between the gauge control module (signal line) and the fuel gauge sending unit, then Go to step 24.

14. Remove the jumper wire from the fuel tank unit 5P connector.
15. Remove the fuel tank unit.
16. Test the fuel gauge sending unit.

Is the fuel gauge sending unit OK?

YES - Go to step 17.

NO - Replace the fuel gauge sending unit, then Go to step 23.

17. Connect the fuel tank unit 5P connector.
18. Reconnect gauge control module connector B (18P).
19. Turn the ignition switch ON (II).
20. Clear the DTC with the HDS.




21. Set the float (A) to the F position.
22. Check the fuel gauge.

Does the gauge move to the full position?

YES - Go to step 30.

NO - Replace the gauge control module, then Go to step 23.

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

Is DTC P0463 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 DTC are indicated, Go to the indicated DTC's troubleshooting.

30. Update the ECM/PCM if it does not have the latest software, or substitute a known good ECM/PCM.

31. Check for Temporary DTCs or DTCs with the HDS.

Is DTC P0463 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 DTC are indicated, Go to the indicated DTC's troubleshooting.