U0114

DTC U0114: FCAN Malfunction (VTM-4 Control Unit-PCM)

NOTE: If the DTC U0073 is stored at the same time as DTC U0114, troubleshoot DTC U0073 first, then recheck for DTC U0114.

1. Turn the ignition switch ON (II).
2. Clear the DTC with the HDS.
3. Check for Temporary DTCs or DTCs with the HDS.

Are any Temporary DTCs or DTCs indicated?

YES - Go to step 4.

NO - Intermittent failure, system is OK at this time. Check for poor connections or loose terminals at the VTM-4 control unit and the PCM.

4. Check for the DTCs of the VTM-4 system.

Is DTC 41 stored?

YES - Go to step 5.

NO - Check the VTM-4 system, then go to step 11.

5. Turn the ignition switch OFF.
6. Jump the SCS line with the HDS.
7. Disconnect PCM connector B (56P).
8. Disconnect VTM-4 control unit 22P connector A.




9. Connect the VTM-4 control unit connector terminals A11 and A22 to body ground with a jumper wires.




10. Check for continuity between PCM connector terminals B15, B16 and body ground, one at a time.

Is there continuity?

YES - VTM-4 control unit internal circuit failure; replace the VTM-4 control unit, then go to step 11.

NO - Repair open in the wire between the PCM and the VTM-4 control unit, then go to step 11.

11. Turn the ignition switch ON (II).
12. Clear the DTC with the HDS.
13. Do the idle learn procedure.
14. Check for Temporary DTCs or DTCs with the HDS.

Are any Temporary DTCs or DTCs indicated?

YES - If DTC U0114 is indicated, check for poor connections or loose terminals at the VTM-4 control unit and the PCM, then go to step 1. If any Temporary DTCs or DTCs are indicated, go to the indicated DTC's troubleshooting.

NO - Troubleshooting is complete.