W/Harness Inspection

Terminal and Connector Inspection

1. Many malfunctions in the electrical system are caused by poor harness/terminal conditions. 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?






Signal Circuit Inspection

Check power in harness
1. Ignition "OFF"
2. Disconnect Water temp.sensor and Connect A/C control unit main harness connector.
3. Ignition "ON"
4. Measure voltage between Power terminal of Water temp.sensor harness connector and chassis ground.

Specification : Infinity





5. Is the measured voltage within specifications?