DTC Troubleshooting
DTC P0462: Fuel Level Sensor (Fuel Gauge Sending Unit) Circuit Low VoltageNOTE: 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 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, the fuel gauge sending unit, and the secondary fuel gauge sending unit.
4. Turn the ignition switch OFF.
5. Fold the rear seat down, then remove the right rear side garnish.
6. Pull back the carpet to expose the access panel, then remove the access panel from the right side of the floor.
7. Disconnect the secondary fuel gauge sending unit 4P 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 - Check the secondary fuel gauge sending unit, then go to step 31.
NO - Go to step 11.
11. Turn the ignition switch OFF.
12. Remove the left cargo area side trim panel, then remove the access panel from the left side of the floor.
13. Disconnect the fuel tank unit 4P connector.
14. Turn the ignition switch ON (II).
15. Clear the DTC with the HDS, and wait 5 seconds.
16. Check for Temporary DTCs or DTCs with the HDS.
Is DTC P0463 indicated?
YES - Go to step 21.
NO - Go to step 17.
17. Turn the ignition switch OFF.
18. Remove the gauge control module.
19. Disconnect the gauge control module 36P connector.
20. Check for continuity between fuel tank unit 4P connector terminal No. 1 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 31.
NO - Go to step 23.
21. Turn the ignition switch OFF.
22. Check for continuity between fuel tank unit 4P connector terminal No. 3 and body ground.
Is there continuity?
YES - Repair short in the wire between the fuel gauge sending unit and secondary fuel gauge sending unit, then go to step 31.
NO - Check the fuel gauge sending unit.
23. Reconnect the gauge control module 36P connector.
24. Remove the fuel tank unit and the secondary fuel gauge sending unit
25. Connect the fuel tank unit and secondary fuel gauge sending unit 4P connectors.
26. Turn the ignition switch ON (II).
27. Clear the DTC with the HDS.
28. Set the floats (A) to the E position.
29. Check the fuel gauge.
Does the gauge move to the empty position?
YES - Go to step 37.
NO - Replace the gauge control module, then go to step 30.
30. Turn the ignition switch OFF.
31. Install the parts in the reverse order of removal.
32. Reconnect all connectors.
33. Turn the ignition switch ON (II).
34. Reset the PCM with the HDS.
35. Do the PCM idle learn procedure.
36. 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, the fuel gauge sending unit, and the secondary 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 DTCs troubleshooting.
37. Reconnect all connectors.
38. Update the PCM if it does not have the latest software, or substitute a known-good PCM.
39. 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, the fuel gauge sending unit, and the secondary fuel gauge sending unit. If the PCM was updated, substitute a known-good PCM, then recheck. If the PCM was substituted, go to step 1.
NO - If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM. If any other Temporary DTCs or DTCs are indicated, go to the indicated DTCs troubleshooting.