Variable Effort Steering (VES)

The Variable Effort Steering (VES) control logic is integrated in the Electronic Brake Control Module/Electronic Brake Traction Control Module (EBCM/EBTCM). The EBCM/EBTCM receives inputs from the wheel speed sensors. The EBCM/EBTCM processes this information and controls the amount of current to the MAGNASTEER actuator to vary the rate of input torque required at the steering gear. Diagnostic Trouble Codes (DTCs) are stored in the EBCM/EBTCM for VES malfunctions. There are two DTCs to aid in VES diagnosis. Ensure all ABS/ETS DTCs are diagnosed and corrected prior to clearing VES DTCs. Clearing VES DTCs will automatically clear ABS/ETS DTCs resulting in a loss of DTC history data. Refer to DIAGNOSIS. Testing and Inspection