Anti-Lock Brake System (ABS) Module

The ABS module is attached directly to the HCU and is the ECU for all of the stability control systems. The module monitors all sensor inputs and all HS-CAN messages relating to vehicle dynamics and directly controls the solenoid valves and the hydraulic pump motor.

The ABS module is available separately for service. When a new ABS module is installed, whether with a new HCU or not, the module must be programmed with the vehicle information. Refer to Description and Operation in Module Configuration .

When a stability control system fault has been corrected or a component has been replaced, the ABS module requires calibration. The calibration procedure is required for the stability control sensors to learn the "zero-position" of the vehicle which means the vehicle must be on a level surface and must not be moving. The calibration procedure is carried out using a diagnostic scan tool.