Operation CHARM: Car repair manuals for everyone.
Hosted by mcallihan.com
Home >> Honda >> 2012 >> CR-Z L4-1.5L Hybrid >> Repair and Diagnosis >> A L L Diagnostic Trouble Codes ( DTC ) >> Testing and Inspection >> U Code Charts >> U0038 >> PGM-FI System

PGM-FI System




DTC Troubleshooting: U0038, U1205, U0038, U1205

DTC U0038:

IMA-CAN Malfunction (BUS-OFF)

DTC U1205:

IMA-CAN Malfunction (ECM/PCM-Motor Control Module (MCM))

NOTE:

- Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information.
- If DTC U0110 is stored at the same time as DTC U0038/U1205, troubleshoot that DTC first, then recheck for DTC U0038/U1205.

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

2. Clear the DTC with the HDS.

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

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

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

Is DTC U0038 or U1205 indicated?

YES -

Go to step 6.

NO -

Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the motor control module (MCM) and the ECM/PCM.

6. Check for DTCs in the IMA system with the HDS.

Is DTC U0038 or U1205 indicated?

YES -

Go to step 7.

NO -

Go to step 38.

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

8. Jump the SCS line with the HDS.

9. Disconnect ECM/PCM connector A (44P).

10. Measure the resistance between ECM/PCM connector terminals A38 and A39.





Is there about 108-132 Ohms?

YES -

Go to step 22.

NO -

- More than 132 Ohms: Go to step 11.
- Less than 108 Ohms: Go to step 17.

11. Turn the battery module switch OFF.

12. Remove the IPU cover IPU Cover Removal/Installation.

13. Remove the PCU lid, the PCU busplate, and the PCU cover Service and Repair.

14. Disconnect motor control module (MCM) connector A (31P).

15. Measure the resistance between ECM/PCM connector terminals A38 and motor control module (MCM) connector terminal A2.





Is there about 1.0 Ohms or less ?

YES -

Go to step 16.

NO -

Repair an open in the wire between the ECM/PCM (A38) and the motor control module (MCM) (A2) , then go to step 33.

16. Measure the resistance between ECM/PCM connector terminals A39 and motor control module (MCM) connector terminal A1.





Is there about 1.0 Ohms or less ?

YES -

Replace the motor control module (MCM) Service and Repair, then go to step 33.

NO -

Repair an open in the wire between the ECM/PCM (A39) and the motor control module (MCM) (A1), then go to step 33.

17. Turn the battery module switch OFF.

18. Remove the IPU cover IPU Cover Removal/Installation.

19. Remove the PCU lid, the PCU busplate, and the PCU cover Service and Repair.

20. Disconnect motor control module (MCM) connector A (31P).

21. Measure the resistance between ECM/PCM connector terminals A38 and A39.





Is there about 1.0 Ohms or more ?

YES -

Replace the motor control module Service and Repair, then go to step 33.

NO -

Repair a short in the wires between the ECM/PCM (A38) (IMA-CAN H line) and the ECM/PCM (A39) (IMA-CAN L line), then go to step 33.

22. Turn the battery module switch OFF.

23. Remove the IPU cover IPU Cover Removal/Installation.

24. Remove the PCU lid, the PCU busplate, and the PCU cover Service and Repair.

25. Disconnect motor control module (MCM) connector A (31P).

26. Measure the resistance between body ground and ECM/PCM connector terminals A38 and A39 individually.





Is there about 1.0 Ohms or more ?.

YES -

Go to step 27.

NO -

Repair a short to ground in the wire between the ECM/PCM (A38) and the motor control module (MCM) (A2) or between the ECM/PCM (A39) the and the motor control module (MCM) (A1), then go to step 33.

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

28. Measure the voltage between body ground and ECM/PCM connector terminals A38 and A39 individually.





Is there voltage?

YES -

Repair a short to power in the wire between the ECM/PCM (A38) and the motor control module (MCM) (A2) or between the ECM/PCM (A39) and the motor control module (MCM) (A1), then go to step 32.

NO -

Go to step 29.

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

30. Reconnect ECM/PCM connector A (44P).

31. Measure the resistance between motor control module (MCM) connector terminals A1 and A2.





Is there about 108-132 Ohms?

YES -

Go to step 36.

NO -

Replace the ECM/PCM Service and Repair, then go to step 33.

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

33. Reconnect all connectors.

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

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

Is DTC U0038 or DTC U1205 indicated?

YES -

Check for poor connections or loose terminals at the motor control module (MCM) and the ECM/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.

36. Reconnect all connectors.

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

38. Update the ECM/PCM if it does not have the latest software ECM/PCM Update, or substitute a known-good ECM/PCM.

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

Is DTC U0038 or DTC U1205 indicated?

YES -

Check for poor connections or loose terminals at the motor control module (MCM), and ECM/PCM. If the ECM/PCM was updated, substitute a known-good ECM/PCM, then recheck. If the ECM/PCM was substituted, go to step 1.

NO -

If the ECM/PCM was updated, troubleshooting is complete. If the ECM/PCM was substituted, replace the original ECM/PCM Service and Repair. If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.

pro multis · About Operation CHARM