RAM 3500 Van V8-360 5.9L Magnum (1995)
Hydraulic Control Assembly - Antilock Brakes: Description and Operation
Front Antilock Valve Circuit Operation
Circuit B120 from the Anti-Lock Brake System (ABS) power relay supplies voltage for the ABS pump motor, plus the isolation and decay solenoids in
the front anti-lock valve. The ABS control module activates the pump motor and the solenoids by providing separate ground paths for each.
The ABS module provides a ground path for the motor on circuit B60.
The ABS control module controls the isolation and decay solenoids in the front anti-lock valve by providing a ground path for each on separate circuits:
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Circuit B248 connects to cavity 30 of the ABS control module and provides ground for the right front decay solenoid.
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Circuit B249 connects to cavity 33 of the ABS control module and provides ground for the right front isolation solenoid.
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Circuit B243 connects to cavity 35 of the ABS control module and provides ground for the left front decay solenoid.
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Circuit B245 connects to cavity 37 of the ABS control module and provides ground for the left front isolation solenoid.
There are two reset switches in the front anti-lock valve; a left switch and a right switch, both provide inputs to the ABS control module. Circuit B5 from
the left reset switch connects to the ABS control module at cavity 5 while circuit B18 from the right reset switch connects to cavity 18.
