RAM 2500 Truck 4WD V10-80L VIN W (1997) | ABS Main Relay | Location - Page 36
ABS Main Relay: Description and Operation
Two relays are used on the ABS. An ABS warning lamp relay is used to activate the amber ABS warning lamp. When the lamp is lit, the voltage at the
Controller Antilock Brake (CAB) monitoring point will be 0 volts. The voltage at the monitoring point will be 12 volts when the CAB energizes the
relay turning the ABS lamp off. The second relay is the ABS main (pump) relay. This relay is used to supply voltage to the ABS pump motor, front
antilock valve and rear wheel antilock valve. Both relays are located in the engine compartment in the Power Distribution Center (PDC).
