Restraints

U0101-LOST COMMUNICATION WITH TCM






For a complete wiring diagram, refer to the wiring information Electrical Diagrams.

- When Monitored:
- Continuously when the ignition is on.
- The battery voltage between 10 and 16 volts.
- Ignition Off Draw (IOD) fuse installed.
- Totally Integrated Power Module (TIPM) is configured correctly.

- Set Condition:
- The Occupant Restraint Controller (ORC) doesn't receive a Transmission Control Module (TCM) message over the CAN C BUS circuit for approximately 2 to 5 seconds.

Possible Causes:

1. VERIFY THE DIAGNOSTIC TROUBLE CODE (DTC) IS ACTIVE

NOTE: Make sure the IOD fuse is installed and the battery is fully charged before proceeding.


1. Turn the ignition on.
2. With the scan tool, read active DTCs.

Is the U0101-LOST COMMUNICATION WITH TCM DTC active?

Yes
- Perform the U0101-LOST COMMUNICATION WITH TCM Diagnostic Procedure. Refer to Totally Integrated Power Module (TIPM)

No
- Perform the Stored Lost Communication DTCs Diagnostic Procedure. Refer to Stored Lost Communication DTCs