Resistance Check
Ensure ignition is off. Disconnect ABS control module and hydraulic actuation assembly. Set VOM on 200 ohm scale. Measure resistance between Red/Yellow wire at control module connector and ground. If resistance is less than one ohm, go to PINPOINT TESTS WL-1 through WL-3 . If resistance is greater than one ohm, service wire between ABS control module and hydraulic actuation assembly.