Circuit Operation

The Electronic Brake Control Module (EBCM) or Electronic Brake Traction Control Module (EBTCM) controls a bi-directional magnetic rotary actuator. The actuator, which is located in the Steering Gear, adjusts the amount of power steering assist to achieve a given level of driver effort to turn the vehicle. The EBCM or EBTCM varies the steering assist by adjusting the current flow through the actuator. The amount of steering assist adjusted for steering is dependent upon vehicle speed (i.e. as vehicle speed increases, steering assist decreases [driver effort increases] and as speed decreases, steering assist increases [driver effort decreases]).

If an open or short is present in WHT (345) or GRY (1787) the EBCM or EBTCM will set DTC 41 (Magna Steer circuit problem). If DTC 41 is current, the Magna Steer can not be controlled by a scan tool.