DTC Troubleshooting

DTC Troubleshooting: U0114

DTC U0114: F-CAN Malfunction (PCM-SH-AWD Control Unit)

NOTE:

- Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information. Initial Inspection and Diagnostic Overview

- If DTC U0073 is stored at the same time as DTC U0114, troubleshoot DTC U0073 first, then recheck for DTC U0114.

1. Turn the ignition switch to ON (II).

2. Clear the DTC with the HDS.

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

Is DTC U0114 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 SH-AWD control unit, and the PCM.


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

Is SH-AWD system DTC 41 and/or 77 indicated?
YES - Go to step 5.

NO - Go to step 8.


5. Turn the ignition switch to LOCK (0).

6. Disconnect SH-AWD control unit connector A (26P).

7. Check for continuity between SH-AWD control unit connector terminals A10 and A11.

Is there continuity?
YES - Substitute a known-good SH-AWD control unit, Service and Repair then go to step 16 and recheck. If DTC U0114 is not indicated, replace the original SH-AWD control unit, Service and Repair then go to step 16.

NO - Repair open in the wire between the SH-AWD control unit (A11 (A10)*) and the PCM (E15 (E26)*), then go to step 16.
*: CANL line






8. Check for a poor connections or loose terminals at SH-AWD control unit connectors A (26P) and B (8P).

Are the connections and the terminals OK?
YES - Go to step 9.

NO - Repair the connections or terminals, then go to step 16.


9. Turn the ignition switch to LOCK (0).

10. Disconnect SH-AWD control unit connector A (26P).

11. Turn the ignition switch to ON (II).

12. Measure the voltage between SH-AWD control unit connector terminal A13 and body ground.

Is there battery voltage?
YES - Go to step 13.

NO - Check the No. 29 (7.5 A) fuse in the under-dash fuse/relay box. If the fuse is OK, repair open in the wire between the No. 29 (7.5 A) fuse and SH-AWD control unit (A13), then go to step 16.






13. Turn the ignition switch to LOCK (0).

14. Disconnect SH-AWD control unit connector B (8P).

15. Check for continuity between body ground and SH-AWD control unit connector terminals B2 and B3 individually, and between SH-AWD control unit connector terminal A12 and body ground.

Is there continuity?
YES - Substitute a known-good SH-AWD control unit, Service and Repair then go to step 16 and recheck. If DTC U0114 is not indicated, replace the original SH-AWD control unit, Service and Repair then go to step 16.

NO - Repair open in the wire between the SH-AWD control unit and body ground (G652), then go to step 16.










16. Reconnect all connectors.

17. Turn the ignition switch to ON (II).

18. Reset the PCM with the HDS.

19. Do the PCM idle learn procedure. PCM Idle Learn Procedure

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

Is DTC U0114 indicated?
YES - Check for poor connections or loose terminals at the gauge control module, the SH-AWD control unit, and the PCM, 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.