Diagnostic Trouble Code (DTC) Information

Diagnostic trouble code (DTC) information TCM-U012100

Condition
The control modules in the vehicle send and receive information continuously on the vehicle's controller area network (CAN).
The diagnostic trouble code (DTC) is stored if the control module detects that:
- Interrupted or missing communication with the Brake control module (BCM).
The control module's test for the diagnostic trouble code (DTC) starts in the event of:
- Ignition switch position II.

Note! The control module can only detect the fault once the test has been started and the diagnostic trouble code (DTC) is stored when the conditions are met.

Hint: Emergency mode in the event of a fault Emergency Mode In The Event Of A Fault





Substitute value
- None.

Possible source
- Disruption or intermittent open-circuit on the Control area network (CAN).
- Look for the cause of the fault in the brake control module (BCM).

Fault symptom[s]
- General warning lamp lit