RAM 2500 Van V8-5.9L VIN Z (1997)
Rear Wheel
CIRCUIT OPERATION
The rear hydraulic valve contains an isolation solenoid, dump solenoid and reset switch. The RWAL control module powers each on separate
circuits.
Circuit B108 from cavity 8 of the RWAL control module feeds the dump solenoid. The isolation solenoid is powered on circuit B101 from cavity
1 of the RWAL control module. Circuit Z8 provides ground for both solenoids.
Circuit B111 from cavity 11 of the RWAL control module connects to the reset switch. Circuit Z1 provides ground for the reset switch.
Circuit B120 from the ABS power relay supplies voltage for the isolation and dump solenoids in the rear hydraulic valve. The Controller,
Anti-Lock Brakes (CAB), activates the solenoids by providing separate ground paths for each.
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Circuit B254 connects to cavity 26 of the CAB and provides ground for the right rear dump solenoid.
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Circuit B252 connects to cavity 28 of the CAB and provides ground for the right rear isolation solenoid.
The rear hydraulic valve has one reset switch that provides an input to the CAB. Circuit B19 from the reset switch connects to the CAB at cavity
19.
Circuit Z1 provides ground for the reset switch.
