Checking The Wiring

Check the cables for an open circuit.

Measure between:

• AYC sensor terminal #1 and brake control module (BCM) terminal #25 (#A25).
• AYC sensor terminal #2 and brake control module (BCM) terminal #29 (#A29).
• AYC sensor terminal #3 and brake control module (BCM) terminal #6 (#A6).
• AYC sensor terminal #5 and brake control module (BCM) terminal #39 (#A39).

Also check that the AYC sensor is properly installed and that the bracket is properly secured.

If the cables are OK and the AYC sensor is properly installed, replace the AYC sensor.

Other information 

• see CONNECTING THE BREAKOUT BOX, BRAKE CONTROL MODULE (BCM)
• see SIGNAL SPECIFICATION, BRAKE CONTROL MODULE (BCM) WITH DSTC (DYNAMIC STABILITY AND TRACTION CONTROL)
• see ACTIVE YAW CONTROL SENSOR, REPLACING
• see CONTENTS .

Fig 2: Identifying Active Yaw Control Sensor Connector Terminals

Courtesy of VOLVO CARS CORPORATION

see VERIFICATION