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(3) Replace pump/motor connector O-ring if not new (Fig. 10). (4) With connector cover completely open (Fig. 8), install 47-way wiring connector into socket of the (5) Align ABM solenoids and pump/motor wiring connector with HCU valves and connector passage (6) If not equipped with traction control, install three screws attaching the ABM to the HCU (Fig. 4). (7) If equipped with traction control, install four screws attaching ABM to HCU (Fig. 5). Tighten (8) Lower vehicle. and clear any faults. CONTROLLER ANTILOCK DESCRIPTION The controller antilock brake (CAB) is a micropro- cessor-based device which monitors the antilock source for the CAB is through the ignition switch in OPERATION The primary functions of the controller antilock brake (CAB) are to: • Monitor the antilock brake system for proper operation. • Detect wheel locking or wheel slipping tenden- cies by monitoring the speed of all four wheels of the • Control fluid modulation to the wheel brakes while the system is in ABS or traction control mode. • Store diagnostic information. • Provide communication to the DRBIIIt scan tool while in diagnostic mode. • Illuminate the amber ABS warning indicator lamp. • (With traction control only) Illuminate the TRAC ON lamp in the message center on the instrument • (with traction control only) Illuminate the TRAC OFF lamp when the amber ABS warning indicator The CAB constantly monitors the antilock brake system for proper operation. If the CAB detects a Fig. 10 Internal Pump Connector O-Ring 1 - O-RING Fig. 11 Integrated Control Unit (ICU) 1 - PUMP/MOTOR CS ELECTRONIC CONTROL MODULES 8E - 7 ANTILOCK BRAKE MODULE (MK25E) (Continued) |