DTC Troubleshooting
DTC Troubleshooting: P0462
DTC P0462:
Fuel Level Sensor (Fuel Gauge Sending Unit) Circuit Low Voltage
NOTE: Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information.
1. Turn the ignition switch to ON (II).
2. Clear the DTC with the HDS, and wait 5 seconds.
3. Check for Pending or Confirmed 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 to LOCK (0).
5. Remove the rear seat cushion, then remove the access panel from the floor.
6. Disconnect the fuel tank unit 4P connector.
7. Turn the ignition switch to ON (II).
8. Clear the DTC with the HDS, and wait 5 seconds.
9. Check for Pending or Confirmed DTCs with the HDS.
Is DTC P0463 indicated?
YES -
Replace the fuel gauge sending unit, then go to step 22.
NO -
Go to step 10.
10. Measure the voltage between fuel tank unit 4P connector terminal No. 1 and body ground.
Is there battery voltage?
YES -
Go to step 15.
NO -
Go to step 11.
11. Turn the ignition switch to LOCK (0).
12. Remove the gauge control module.
13. Disconnect the gauge control module 32P connector.
14. Check for continuity between fuel tank unit 4P connector terminal No. 1 and body ground.
Is there continuity?
YES -
Repair a short in the wire between the gauge control module (signal line) and the fuel gauge sending unit, then go to step 24.
NO -
Replace the gauge control module, then go to step 24.
15. Turn the ignition switch to LOCK (0).
16. Remove the fuel tank unit.
17. Connect the fuel tank unit 4P connector.
18. Turn the ignition switch to ON (II).
19. Clear the DTC with the HDS.
20. Set the float (A) to the E position.
'10 model
'11 model
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 to LOCK (0).
23. Reinstall all removed parts in the reverse order of removal.
24. Reconnect all connectors.
25. Turn the ignition switch to ON (II).
26. Reset the PCM with the HDS.
27. Do the PCM idle learn procedure.
28. Check for Pending or Confirmed 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 Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.�
29. Turn the ignition switch to LOCK (0).
30. Reinstall all removed parts in the reverse order of removal.
31. Reconnect all connectors.
32. Update the PCM if it does not have the latest software, or substitute a known-good PCM.
33. Check for Pending or Confirmed 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 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 Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.�