Antilock Brake Module (MK25E): Description

The Antilock Brake Module (ABM) is a microprocessor-based device which monitors the antilock brake system (ABS) during normal braking and controls it when the vehicle is in an ABS stop or when in a traction control situation. The ABM utilizes a 47-way electrical connector on the vehicle wiring harness. The power source for the ABM is through the ignition switch in the RUN or ON position.

The ABM is mounted to the HCU as part of the Integrated Control Unit (ICU). See Fig 1. The ICU is located in the engine compartment on the inboard side of the left body frame rail. For information on the ICU, (Refer to BRAKES/HYDRAULIC/MECHANICAL/ICU (INTEGRATED CONTROL UNIT) - DESCRIPTION .

Fig 1: Mk25e ICU

Courtesy of DAIMLERCHRYSLER CORP.