Diagnostic Trouble Code (DTC) Information

Diagnostic trouble code (DTC) information

Condition
Information about vehicle speed is sent on the CAN-network from brake control module (BCM) to engine control module (ECM).
If brake control module (BCM) registers a malfunction of the speed signal, information about the malfunction is sent to engine control module (ECM) which generates the diagnostic trouble code.
The diagnostic trouble code can be diagnosed when the ignition is on.

Hint: If Engine control module (ECM) has been recharged or if the battery voltage has been interrupted, the brake pedal must be pressed down twice for approx. two seconds to activate the cruise control function.

Substitute value
- Cruise control turned off when malfunction is active.

Possible source
- Look for the cause of the malfunction in the brake control module (BCM).

Fault symptom[s]
- Cruise control does not function at all.
- Message in the display.