U0110

DTC U0110: IMA-CAN Malfunction (MCM-(Battery Condition Monitor CPU)-PCM)

NOTE:
- Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information.
- Information marked with an asterisk (*) applies to the IMACANL line.

1. Turn the ignition switch ON (II) and read the HDS.

Does the HDS communicate with the IMA system?

YES - Go to step 2.

NO - Go to "IMA System Indicator Circuit Troubleshooting".

2. Clear the DTC with the HDS.
3. Check for Temporary DTCs or DTCs in the DTCs MENU with the HDS.

Is DTC U0110 indicated?

YES - Go to step 4.

NO - Intermittent failure, system is OK at this time. Check for poor connections or loose terminals at the MCM, the A/C compressor driver and the PCM.

4. Check for Temporary DTCs or DTCs in the DTCs MENU with the HDS again.

Are DTC U0037 and U0110 indicated at the same time?

YES - Go to troubleshooting DTC U0037.

NO - Go to step 5.

5. Check for Temporary DTCs or DTCs in the DTCs MENU with the HDS again.

Are DTC U0110, U0164 and U1201 indicated at the same time?

YES - Go to step 6.

NO - Substitute a known-good MCM, then go to step 15 and recheck. If DTC U0037 is not indicated, replace the original MCM, then go to step 15.

6. Turn the ignition switch OFF.
7. Jump the SCS line with the HDS.
8. Disconnect PCM connector D(17P).
9. Remove the IPU lid.
10. Disconnect MCM connector A (31P).
11. Disconnect the A/C compressor driver 4P connector.




12. Connect between PCM connector terminal D1*, D13 to body ground with a jumper wire individually.




13. Check for continuity between MCM connector terminals A6, A7 and body ground individually.

Is there continuity?

YES - Go to step 14.

NO - Repair open in the wire between the MCM (A7 (A6)*) and the PCM (D13(D1)*), then go to step 15.




14. Check for continuity between the A/C compressor driver 4P connector terminals No. 2, No. 3 and body ground individually.

Is there continuity?

YES - Substitute a known-good MCM, then go to step 15 and recheck. If DTC U0037 is not indicated, replace the original MCM, then go to step 15.

NO - Repair open in the wire between the A/C compressor driver (No. 2 (No. 3)*) and the PCM (D13(D1)*),then go to step 15.

15. Turn the ignition switch OFF.
16. Reconnect all connectors.
17. Turn the ignition switch ON (II).
18. Reset the PCM with the HDS.
19. Do the PCM idle learn procedure.
20. Check for Temporary DTCs or DTCs with the HDS.

Are any Temporary DTCs or DTCs indicated?

YES - If DTC U0110 is indicated, check for poor connections or loose terminals at the MCM, the A/C compressor driver and the PCM, then go to step 1. If any other Temporary DTCs or DTCs are indicated, go to the indicated DTC's troubleshooting.

NO - Troubleshooting is complete.