W/Harness Inspection

C1203 Wheel Speed Sensor Front-RH Open/Short

Inspection/Repair - W/Harness Inspection

Terminal and Connector Inspection

1. Many malfunctions in the electrical system are caused by poor harness(es) and terminals. Faults can also be caused by interference from other electrical systems, and mechanical or chemical damage.
2. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage.
3. Has a problem been found?






Power Circuit Inspection

1. Ignition "ON" & Engine "OFF".
2. Measure voltage between power terminal of the wheel speed sensor harness connector and chassis ground.

Specification : Approx. B+




3. Is the measured voltage within specifications?






Signal Circuit Inspection

1. Lift the vehicle by lift.
2. Ignition "ON".
3. Turn the wheel with hand.
4. Measure waveform between wheel speed sensor signal terminal of the HECU harness connector and chassis ground with oscilloscope.

Specification : Approx. High : 1.4 V, Low : 0.7 V




5. Is the measured wave within specifications?