W/Harness Inspection

Ground Circuit inspection

1. Ignition "OFF"
2. Disconnect IATS connector
3. Measure resistance between terminals 4 of the sensor harness connector and chassis ground.

Specification : Approx. 0 Ohms




4. Is resistance within the specification ?






Signal Circuit Inspection

1. Ignition "ON" & Engine "OFF"
2. Measure voltage between terminals 3 of the sensor harness connector and chassis ground

Specification : Approx. 5V




3. Is voltage within the specification ?






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 ?