Dakota 2WD V6-239 3.9L Magnum (1996)
Hydraulic Control Assembly - Antilock Brakes: Description and Operation
Front Hydraulic Valve
CIRCUIT OPERATION
Circuit B120 from the Antilock Brake System (ABS) power relay supplies voltage for the pump motor plus the isolation and dump solenoids in the
hydraulic control unit. The Controller, Antilock Brakes (CAB), activates the pump motor and solenoids by providing separate ground paths for
each.
The CAB provides a ground path for the motor on circuit B60.
The CAB cycles the isolation and dump solenoids in the hydraulic control unit by providing a ground path for each on separate circuits:
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Circuit B248 connects to cavity 30 of the CAB and provides ground for the right front dump solenoid.
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Circuit B249 connects to cavity 33 of the CAB and provides ground for the right front isolation solenoid.
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Circuit B243 connects to cavity 35 of the CAB and provides ground for the left front dump solenoid.
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Circuit B245 connects to cavity 37 of the CAB and provides ground for the left front isolation solenoid.
There are two reset switches in the front hydraulic valve; a left switch and a right switch. Both switches provide inputs to the CAB. Circuit B5
from the left reset switch connects to the CAB at cavity 5 while circuit B18 from the right reset switch connects to cavity 18.
