IMA System
DTC Troubleshooting: U0110 (101)
DTC U0110 (101):
F-CAN Malfunction (BCM Module-MCM)
NOTE:
- Before you troubleshoot, record all freeze data, and review the general troubleshooting information Initial Inspection and Diagnostic Overview.
- If DTC U1205 (75) is stored at the same time as DTC U0110 (101) and U0028 (108), the MCM relay is OFF forcibly.
- Information marked with an asterisk (*) applies to the '06-07 models.
1. Turn the ignition switch ON (II).
2. Check for Pending or Confirmed DTCs with the HDS.
Is DTC U0028 (108) indicated?
YES -
Do the troubleshooting for DTC U0028 (108) U0028.
NO -
Go to step 3.
3. Clear the DTC with the HDS Initial Inspection and Diagnostic Overview.
4. Check for Pending or Confirmed DTCs with the HDS.
Is DTC U0110 (101) 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 PCM, the BCM module, and the MCM.�
5. Check for Pending or Confirmed DTCs with the HDS.
Is DTC U1205 (75) indicated?
YES -
Go to step 13.
NO -
Go to step 6.
6. Turn the ignition switch to LOCK (0).
7. Turn the battery module switch OFF High Voltage Safety.
8. Remove the IPU lid IPU Lid Removal/Installation.
9. Check for poor connections or loose terminals at the MCM connector.
Are the connections and the terminals OK?
YES -
Go to step 10.
NO -
Repair the connections and the terminals, then go to step 28.
10. Remove the BCM module Service and Repair.
11. Disconnect the MCM 20P connector.
12. Check for continuity between BCM module connector terminal A1 and MCM 20P connector terminal No. 20, and between BCM module connector terminal A21 and MCM 20P connector terminal No. 10.
Is there continuity?
YES -
Go to step 34.
NO -
Repair open in the wire between the BCM module (A1, A21) and the MCM (No. 10, No. 20), then go to step 28.
13. Turn the ignition switch to LOCK (0).
14. Turn the battery module switch OFF High Voltage Safety.
15. Remove the IPU lid IPU Lid Removal/Installation.
16. Remove the BCM module Service and Repair, then check for continuity between body ground and MCM 20P connector terminals No. 2 and No. 9* individually.
Is there continuity?
YES -
Go to step 17.
NO -
Repair open in the wire between the MCM (No. 2, No. 9*) and G102, then go to step 28.
17. Disconnect the MCM 20P connector.
18. Reconnect BCM module connector A.
19. Turn the ignition switch to ON (II), then measure the voltage between MCM 20P connector terminals No. 18 and No. 19* and body ground within 1 second.
Is there 12 V battery voltage?
YES -
Go to step 39.
NO -
Go to step 20.
20. Turn the ignition switch to LOCK (0).
21. Test MCM relay 2 Testing and Inspection.
Is the relay OK?
YES -
Go to step 22.
NO -
Replace MCM relay 2, then go to step 27.
22. Check the No. 61 +B IMA2 (10 A) fuse.
Is the fuse OK?
YES -
Go to step 23.
NO -
Repair short to ground in the wire between the No. 61 +B IMA2 (10 A) fuse and MCM relay 2. Also replace the No. 61 +B IMA2 (10 A) fuse, then go to step 28.
23. Measure the voltage between MCM relay 2 4P connector terminal No. 2 and body ground.
Is there 12 V battery voltage?
YES -
Go to step 24.
NO -
Repair open in the wire between MCM relay 2 and the No. 61 +B IMA2 (10 A) fuse, then go to step 28.
24. Check for continuity between MCM 20P connector terminals No. 18 and No. 19*, and MCM relay 2 4P connector terminal No. 1.
Is there continuity?
YES -
Go to step 25.
NO -
Repair open in the wire between MCM relay 2 and the MCM (No. 18, No. 19*), then go to step 28.
25. Disconnect BCM module connector A (40P).
26. Check for continuity between BCM module connector terminal A12 and MCM relay 2 4P connector terminal No. 3.
Is there continuity?
YES -
Go to step 27.
NO -
Repair open in the wire between MCM relay 2 and the BCM module (A12), then go to step 28.
27. Check for continuity between MCM relay 1 4P connector terminal No. 1 and MCM relay 2 4P connector terminal No. 4.
Is there continuity?
YES -
Go to step 34.
NO -
Repair open in the wire between MCM relay 1 and MCM relay 2, then go to step 28.
28. Reconnect all connectors.
29. Reinstall the IPU lid IPU Lid Removal/Installation, then turn the battery module switch ON High Voltage Safety.
30. Turn the ignition switch to ON (II).
31. Clear the DTC with the HDS Initial Inspection and Diagnostic Overview.
32. Check for Pending or Confirmed DTCs with the HDS.
Is DTC U0110 (101) indicated?
YES -
Check for poor connections or loose terminals at the PCM, the BCM module, and the MCM, then go to step 1.
NO -
Go to step 33.
33. Monitor the OBD STATUS for DTC U0110 (101) in the DTCs MENU with the HDS.
Does the screen indicate PASSED?
YES -
Troubleshooting is complete. If any other Pending or Confirmed DTCs were indicated in step 32, go to the indicated DTC's troubleshooting.�
NO -
If the screen indicates FAILED, check for poor connections or loose terminals at the PCM, the BCM module, and the MCM, then go to step 1. If the screen indicates NOT COMPLETED, keep the ignition switch ON (II) until a result comes on.
34. Reconnect all connectors.
35. Reinstall the IPU lid IPU Lid Removal/Installation, then turn the battery module switch ON High Voltage Safety.
36. Update the BCM module if it does not have the latest software Testing and Inspection, or substitute a known-good BCM module Initial Inspection and Diagnostic Overview.
37. Check for Pending or Confirmed DTCs with the HDS.
Is DTC U0110 (101) indicated?
YES -
Check for poor connections or loose terminals at the PCM, the BCM module, and the MCM. If the BCM module was updated, substitute a known-good BCM module Initial Inspection and Diagnostic Overview, then recheck. If the BCM module was substituted, go to step 1.
NO -
Go to step 38.
38. Monitor the OBD STATUS for DTC U0110 (101) in the DTCs MENU with the HDS.
Does the screen indicate PASSED?
YES -
If the BCM module was updated, troubleshooting is complete. If the BCM module was substituted, replace the original BCM module Service and Repair. If any other Pending or Confirmed DTCs were indicated in step 37, go to the indicated DTC's troubleshooting.�
NO -
If the screen indicates FAILED, check for poor connections or loose terminals at the PCM, the BCM module, and the MCM. If the BCM module was updated, substitute a known-good BCM module Initial Inspection and Diagnostic Overview, then recheck. If the BCM module was substituted, go to step 1. If the screen indicates NOT COMPLETED, keep the ignition switch ON (II) until a result comes on.
39. Turn the ignition switch to LOCK (0).
40. Reconnect all connectors.
41. Reinstall the IPU lid IPU Lid Removal/Installation, then turn the battery module switch ON High Voltage Safety.
42. Update the MCM if it does not have the latest software Testing and Inspection, or substitute a known-good MCM Initial Inspection and Diagnostic Overview.
43. Check for Pending or Confirmed DTCs with the HDS.
Is DTC U0110 (101) indicated?
YES -
Check for poor connections or loose terminals at the PCM, the BCM module, and the MCM. If the MCM was updated, substitute a known-good MCM Initial Inspection and Diagnostic Overview, then recheck. If the MCM was substituted, go to step 1.
NO -
Go to step 44.
44. Monitor the OBD STATUS for DTC U0110 (101) in the DTCs MENU with the HDS.
Does the screen indicate PASSED?
YES -
If the MCM was updated, troubleshooting is complete. If the MCM was substituted, replace the original MCM MCM Replacement. If any other Pending or Confirmed DTCs were indicated in step 43, go to the indicated DTC's troubleshooting.�
NO -
If the screen indicates FAILED, check for poor connections or loose terminals at the PCM, the BCM module, and the MCM. If the MCM was updated, substitute a known-good MCM Initial Inspection and Diagnostic Overview, then recheck. If the MCM was substituted, go to step 1. If the screen indicates NOT COMPLETED, keep the ignition switch ON (II) until a result comes on.