Electronic Brake Control Module: Description and Operation

This module controls all functions of the ABS system by using various inputs and outputs. Using input signals from the four wheel speed sensors, ignition switch, brake switch and unswitched battery voltage, the module sends output signals to three bidirectional motor controls, two solenoid controls and the system enable relay. A serial data link from the EBCM to terminal ``M'' of the ALDL connector is provided for service diagnostic tools. The EBCM continuously monitors itself, each input and each output for proper operation. If any system malfunction is detected, the EBCM will store a fault code in nonvolatile memory (Code will not disappear if battery is disconnected).