Speed Sensor
- Raise and support drive axle so that wheels can be turned by hand. Disconnect control unit wire connector. Apply ohmmeter probes between terminal "H" of the wire connector and ground.
- Ohmmeter should oscillate continuity and non-continuity as the wheels are manually rotated. If no continuity registers, inspect wire harness for short or open circuit. If wire harness is okay, replace speed sensor and retest system.