W/Harness Inspection

Terminal and Connector Inspection

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






Control Circuit Inspection

Check for open in harness
1. Ignition "OFF"
2. Disconnect Intake actuator and A/C control unit main harness connector.
3. Measure resistance between FRE (+) terminal of Intake actuator harness connector and FRE (+) terminal of A/C-ECU harness connector.
4. Measure resistance between REC (-) terminal of Intake actuator harness connector and REC (-) terminal of A/C-ECU harness connector.

Specification : 1 Ohm below





5. Is the measured resistance within specification?





Check short to ground in harness
1. Ignition "OFF"
2. Disconnect Intake actuator and A/C control unit main harness connector.
3. Measure resistance between FRE (+) terminal of Intake actuator harness connector and chassis ground.
4. Measure resistance between REC (-) terminal of Intake actuator harness connector and chassis ground.

Specification : Infinity





5. Is the measured resistance within specification?