Dakota Quad Cab 2WD V8-5.9L VIN Z LDC (2002)
Controller Antilock Brake: Description and Operation
CONTROLLER REAR WHEEL ANTILOCK BRAKE
Fig.3 RWAL Cab
The Controller Antilock Brakes (CAB) is a microprocessor which handles testing, monitoring and controlling the ABS brake system operation.
The CAB functions are:
-
Perform self-test diagnostics.
-
Monitor the RWAL brake system for proper operation.
-
Control the RWAL valve solenoids.
Fig.4 CAB/HCU
The CAB is mounted on the top of the hydraulic control unit. 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.
NOTE: If the CAB needs to be replaced, the rear axle type and tire revolutions per mile must be programed into the new CAB.To program the
CAB refer to the Chassis Diagnostic.
System self-test
When the ignition switch is turned-on the microprocessor is tested. If an error occurs during the test, a DTC will be set into the memory. However
it is possible the DTC will not be stored in memory if the error has occurred in the module were the DTC's are stored.
