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Dodge Durango
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Brakes » Four wheel antilock brakes » Description and operation
Controller antilock brakes

DESCRIPTION

The CAB is mounted on the top of the hydraulic control unit (Fig. 2). The CAB operates the ABS system and is separate from other vehicle electrical circuits.

CAB voltage source is through the ignition switch in the RUN position.

OPERATION

The CAB contains dual microprocessors. A logic block in each microprocessor receives identical sensor signals. These signals are processed and compared simultaneously.

The CAB contains a self check program that illuminates the ABS warning light when a system fault  is detected. Faults are stored in a diagnostic program memory and are accessible with the DRB scan tool.

ABS faults remain in memory until cleared, or until after the vehicle is started approximately 50 times. Stored faults are not erased if the battery is disconnected.

NOTE: If the CAB needs to be replaced, the rear axle type and tire revolutions per mile must be programed into the new CAB. For axle type refer to Group 3 Differential and Driveline. For tire revolutions per mile refer to Group 22 Tire and Wheels. To program the CAB refer to the Chassis Diagnostic Manual.

Fig. 2 CAB/HCU Fig. 2 CAB/HCU

1 - CAB

2 - PUMP WIRING

3 - PUMP MOTOR

4 - HCU

    More about «Description and operation»:

    Antilock brake system

    Controller antilock brakes

    Hydraulic control unit

    Wheel speed sensor

    Abs warning lamp

    Dodge Durango Service Manual / Brakes / Four wheel antilock brakes / Description and operation / Controller antilock brakes

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