Diagnostic Trouble Code (DTC) Information

Diagnostic trouble code (DTC) information ECM-A12C

Condition
A fault message is transmitted to the engine control module (ECM) and the diagnostic trouble code (DTC) is stored if a fault is detected in the brake control module (BCM). Diagnostic trouble codes (DTCs) for the vehicle speed sensor (VSS) signal are also stored in the brake control module (BCM).

Substitute value
- The speed signal from the brake control module (BCM) is set at 0 km/h.

Possible source
- Faulty speed signal to the brake control module (BCM).

Fault symptom[s]
- Malfunction indicator lamp (MIL) lit.