Check at Control Unit Connector

Speed Sensor Terminal Identification:

Speed Sensor Continuity Specification:

1. Check continuity at control unit terminals.
2. If continuity is not as specified, check wiring harness between wheel speed sensor and control unit.
3. If continuity is satisfactory, check voltage between 1K and 1G, 1O and 1Q, 1U and 1F, 1L and 1P while rotating wheel one revolution per second by hand.
4. If voltage is not approximately 50-60 mV, the wheel speed sensor is faulty.
5. If voltage is approximately 50-60 mV, the control unit is faulty.