Steering Angle Sensor Module (SASM)

Vehicles equipped with EPAS  are also equipped with a Steering Angle Sensor Module (SASM). For vehicles without Active Park Assist, the SASM  has no internal circuitry and does not contribute in any way to AdvanceTrac® functionality. In this case, the SASM  is used to provide structural support for the clockspring and for canceling the turn signals. However, on vehicles that are  equipped with Active Park Assist, the SASM  is fully functional. The ABS  module receives steering wheel angle information that is transmitted on the HS-CAN  bus from both the EPAS  steering gear and the SASM  .

The SASM  measures the rate of rotation of the steering wheel by monitoring the steering wheel rotation ring as it passes through the sensor gap. The SASM  uses the HS-CAN  bus to transmit information to the ABS module about whether the steering wheel is being turned left or right and how far it is being turned.