IMA System (BCM)

DTC Troubleshooting: U0100 (103)

DTC U0100 (103):

F-CAN Malfunction (PCM (CVT System)-BCM Module)

NOTE:

- To verify this is the appropriate troubleshooting procedure, jump the SCS with the HDS and read the flash code, or change the HDS setup to show HM codes and read the HM code.
- Before you troubleshoot, record all freeze data, and review the general troubleshooting information Initial Inspection and Diagnostic Overview.

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

2. Check for Pending or Confirmed DTCs in the IMA SYSTEM 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 in the IMA SYSTEM with the HDS.

Is DTC U0100 (103) 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 and the BCM module.�

5. Check for Pending or Confirmed DTCs in the IMA SYSTEM with the HDS.

Is DTC U0100 (102) indicated?

YES -

Go to step 6.

NO -

Go to step 11.

6. Check for Pending or Confirmed DTCs in the PGM-FI SYSTEM and the CVT SYSTEM with the HDS.

Are any Pending or Confirmed DTCs indicated?

YES -

Go to the indicated DTC's troubleshooting.

NO -

Update the PCM if it does not have the latest software PCM Update, or substitute a known-good PCM Initial Inspection and Diagnostic Overview, then recheck. If the symptom/indication goes away with an updated PCM, go to step 7. If the symptom/indication goes away with a known-good PCM, replace the original PCM Service and Repair, then go to step 7.

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

8. Clear the DTC with the HDS Initial Inspection and Diagnostic Overview.

9. Check for Pending or Confirmed DTCs in the IMA SYSTEM with the HDS.

Is DTC U0100 (103) indicated in the IMA SYSTEM?

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 10.

10. Monitor the OBD STATUS for DTC U0100 (103) 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 9, 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.

11. 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.

12. Check for Pending or Confirmed DTCs in the IMA SYSTEM with the HDS.

Is DTC U0100 (103) 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 13.

13. Monitor the OBD STATUS for DTC U0100 (103) 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 12, 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.