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. Reading and Clearing Diagnostic Trouble Codes

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

2. Check for Pending or Confirmed DTCs with the HDS.

Are DTC U0073 and U0114 indicated at the same time?
YES - Go to the troubleshooting for DTC U0073. U0073

NO - Go to step 3.


3. Clear the DTC with the HDS.

4. Check for Pending or Confirmed DTCs with the HDS.

Is DTC U0114 indicated?
YES - Go to step 5.

NO - Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the SH-AWD control unit and the PCM.


5. Check for communication to the SH-AWD system with the HDS.

Does the HDS communicate with the SH-AWD control unit?
YES - Go to step 6.

NO - Go to the DLC circuit troubleshooting. Testing and Inspection


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

7. Jump the SCS line with the HDS.

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

9. Disconnect PCM connector E (31P).

10. Check for continuity between PCM connector terminal E15 and SH-AWD control unit connector A (26P) terminal No. 11.

Is there continuity?
YES - Go to step 11.

NO - Repair open in the wire between the PCM (E15) and the SH-AWD control unit, then go to step 12.






11. Check for continuity between PCM connector terminal E26 and SH-AWD control unit connector A (26P) terminal No. 10.

Is there continuity?
YES - Substitute a known-good SH-AWD control unit, Service and Repair then go to step 12 and recheck. If DTC U0114 is not indicated after substitution, replace the original SH-AWD control unit, Service and Repair then go to step 12.

NO - Repair open in the wire between the PCM (E26) and the SH-AWD control unit, then go to step 12.






12. Reconnect all connectors.

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

14. Reset the PCM with the HDS.

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

16. Check for Pending or Confirmed DTCs with the HDS.

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