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MODULE-ANTILOCK BRAKE - MK25E DESCRIPTION The Antilock Brake Module (ABM) is a microproces- The ABM (1) is mounted to the HCU (2) as part of the OPERATION The primary functions of the Antilock Brake Module (ABM) are to: • Monitor the Antilock Brake System (ABS) and Electronic Stability Program (ESP) for proper operation. • Detect wheel locking or wheel slipping tendencies by monitoring the speed of all four wheels of the vehicle. • Control fluid modulation to the wheel brakes while the system is in ABS or traction control mode. • Modulates fluid pressure to the wheel brakes to control vehicle yaw rate in ESP mode. • Store diagnostic information. • Provide communication to the scan tool while in diagnostic mode. • Illuminate the amber TCS/ESP indicator in the instrument cluster. The ABM constantly monitors the ABS and ESP (if equipped) for proper operation. If the ABM detects a fault, it will The ABM continuously monitors the speed of each wheel through the signals generated by the wheel speed sensors 8E - 250 ELECTRONIC CONTROL MODULES - SERVICE INFORMATION LX |