Control Module

Fig 1: Identifying Steering Wheel Angle Sensor Module (SAS) & Steering Wheel Module (SWM)

Courtesy of VOLVO CARS CORPORATION

1. The steering wheel angle sensor module (SAS) is integrated in the steering wheel module (SWM)
2. Steering wheel angle sensor.

Only cars equipped with DSTC (dynamic stability and traction control) have a steering wheel angle sensor module (SAS). The easiest way to determine if a car is equipped with DSTC (Dynamic stability and traction control) is to search for a switch, marked DSTC, positioned in the panel on the climate control module (CCM).

The steering wheel angle sensor module (SAS) is integrated in the steering wheel module (SWM). The only function of the steering angle sensor module (SAS) is to process the signals from the steering wheel angle sensor. The signals used by the DSTC system. The steering wheel angle sensor is installed on the steering wheel module (SWM). The sensor is directly connected to the steering wheel angle sensor module (SAS). The steering wheel angle sensor module (SAS) transmits signal information, via the high speed side of the controller area network (CAN), to the brake control module (BCM) and suspension module (SUM).

If a fault occurs, the steering wheel angle sensor module (SAS) detects this and a diagnostic trouble code (DTC) is stored. The DSTC function is switched off.

Diagnostic trouble codes (DTCs) stored in the steering wheel angle sensor module (SAS). This information can be read off using VIDA via the data link connector (DLC) in the vehicle.