U0155

DTC U0155: F-CAN Malfunction (Gauge Control Module-PCM)

NOTE: Information marked with an asterisk (*) applies to the VSA model.

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

Is DTC U0073 and/or U0155 indicated?

YES - Go to step 4.

NO - Intermittent failure, system is OK at this time. Check for poor connections or loose terminals at the gauge control module, VSA control unit*, VTM-4 control unit, TPMS control unit, and the PCM.

4. Turn the ignition switch OFF.
5. Remove the gauge control module.
6. Disconnect the gauge control module 30P Connector.
7. Disconnect the VSA control unit 47P connector.
8. Disconnect TPMS control unit connector B (22P).
9. Disconnect VTM-4 control unit connector A (22P).
10. Jump the SCS line with the HDS.
11. Disconnect PCM connector A (44P).




12. Check for continuity between PCM connector terminals A1, A36, and body ground individually.

Is there continuity?

YES - Repair short in the wire between the gauge control module, VSA control unit*, VTM-4 control unit, TPMS control unit, and the PCM (A1(A36)), then go to step 17.

NO - Go to step 13.




13. Check for continuity between PCM connector terminals A1 and A36.

Is there continuity?

YES - Repair short in the wire between the PCM A36 (CANH line) and A1 (CANL line), then go to step 17.

NO - Go to step 14.




14. Check for continuity between PCM connector terminal A36 and the above connector terminals:

Is there continuity between the PCM terminal and each of the terminals in the chart?

YES - Go to step 15.

NO - Repair open in the wire between the PCM and the appropriate connector, then go to step 17.




15. Check for continuity between PCM connector terminal A1 and the above connector terminals:

Is there continuity between the PCM terminal and each of the terminals in the chart?

YES - Go to step 16.

NO - Repair open in the wire between the PCM and the appropriate connector, then go to step 17.




16. Refer to the above chart. Select the row that most closely represents the combination of DTCs retrieved from the PGM-FI, VSA: Check connections at the control module indicated in the last column. If all the connections are OK, substitute another control module. After substituting the control module, go to step 17 and recheck.

Are �he DTCs still indicated?

YES - Substitute the remaining control modules, one at time, until the DTCs are no longer present, then replace the control module that made the DTCs go away. After replacing the faulty control module, go to step 17.

NO - Replace the faulty control module, then go to step 17.

17. Reconnect all connectors.
18. Turn the ignition switch ON (II).
19. Reset the PCM with the HDS.
20. Do the PCM idle learn procedure.
21. Check for Temporary DTCs or DTCs with the HDS.

Are any Temporary DTCs or DTCs indicated?

YES - If DTC U0073 and/or U0155 is indicated, check for poor connections or loose terminals at the gauge assembly, VSA control unit*, VTM-4 control unit, TPMS control unit, and the PCM, then go to step 1. If any other DTCs are indicated, go to the indicated DTC's troubleshooting.

NO - Troubleshooting is complete.