Diagnostic Trouble Code (DTC) Information

Diagnostic trouble code (DTC) information

Condition
If the engine control module (ECM), with engine running, registers a malfunction on the brake pedal sensor's circuit, the brake light switch circuit, or on the CAN-communication between the brake control module (BCM) and the engine control module (ECM), the diagnostic trouble code is generated.

Substitute value
Cruise control switched off.

Possible source

Signal too high:
- Look for the cause of the malfunction in the brake control module (BCM) and in the central electronic module (CEM).

Incorrect signal:
- Malfunction in brake control module (BCM) or in central electronic module (CEM).
- Contact resistance or oxidation in the connections between the engine control module (ECM) and the brake light switch.
- Open circuit in the voltage feed to the brake light switch.
- Open circuit or short-circuit to ground or voltage in the cable for the brake light switch.
- Incorrectly installed brake light switch.
- Incorrectly adjusted brake light switch.
- Water in the connectors.
- Damaged brake light switch.

Signal missing:
- Look for the cause of the malfunction in the brake control module (BCM) and in the central electronic module (CEM).

Fault symptom[s]
- Cruise control does not function at all.
- Brake light constantly on.
- Message in information display