Diagnostic Trouble Code (DTC) Information BCM-0109

Condition

Fig 1: Identifying Brake Control Module (BCM) & Steering Wheel Angle Sensor

Courtesy of VOLVO CARS CORPORATION

NOTE: The diagnostic trouble code (DTC) applies only to cars with dynamic stability and traction control (DSTC).

The steering wheel module (SWM) transmits a status signal to the brake control module (BCM).

The diagnostic trouble code (DTC) is stored if the brake control module (BCM) receives a message from the steering wheel module (SWM) indicating an internal fault.

Substitute Value

Traction Control is blocked
Stability Control is blocked
Active yaw control is blocked.

HINT: BRAKE SYSTEM, ABBREVIATIONS

Possible Source

Internal fault in the steering wheel module (SWM).

NOTE: This diagnostic trouble code (DTC) is not due to an internal hardware fault in the Brake control module (BCM) and must not be remedied by replacing the control module.

Fault symptom[s]

The information lamp is lit
Traction control does not function
The stability control system does not function.