W/Harness Inspection

Air Conditioner
B2447 Air Mix Motor VENT-Console - Inspection/Repair:_: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 Console temp actuator and A/C control unit main harness connector.
3. Measure resistance between WARM terminal of Console temp actuator harness connector and WARM terminal of A/C-ECU harness connector.
4. Measure resistance between COOL terminal of Console temp actuator harness connector and COOL terminal of A/C-ECU harness connector.

Specification :below 1Ohms




5. Is the measured resistance within specification?





Check short to ground in harness
1. Ignition "OFF"
2. Disconnect Console temp actuator actuator and A/C control unit main harness connector.
3. Measure resistance between WARM terminal of Console temp actuator harness connector and chassis ground.
4. Measure resistance between COOL terminal of Console temp actuator harness connector and chassis ground.

Specification :Infinity




5. Is the measured resistance within specification?