Resistance Check

Turn ignition off. Disconnect ABS control unit. See COMPONENT LOCATIONS  . Ensure hydraulic actuator assembly is connected. Set DVOM on 200-ohm scale. Measure resistance between Red/Yellow wire at ABS control unit connector and ground. If resistance is less than one ohm, go to PINPOINT TEST WL-1  . If resistance is more than one ohm, repair Red/Yellow wire between ABS control unit and hydraulic actuator assembly.