Dakota 4WD V6-239 3.9L Magnum (1996)
ABS Main Relay: Description and Operation
CIRCUIT OPERATION
When the Controller, Antilock Brakes (CAB) grounds the ABS power relay on circuit B116, the relay contacts close connecting circuit A1O from
the Power Distribution Center (PDC) and circuit B120. Circuit A10 connects to fuse A in the PDC. Circuit A20 from the fuse 4 in the fuse block
splices to feed the coil side of the ABS power relay
From the ABS power relay, circuit B120 splices to supply voltage to the ABS pump motor and all solenoids in the hydraulic control unit. Circuit
B120 also supplies power to the solenoids in the rear wheel anti-lock valve (RWAL). Additionally, circuit B120 provides an input to cavity 34 of
the CAB. The input tells the CAB that voltage has been supplied to the pump motor.
