W/Harness Inspection

P0647 A/C Clutch Relay Control Circuit high

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?
YES
1) Repair as necessary and go to "Verification of vehicle Repair" procedure
NO
1) Go to "Control circuit inspection" procedure

Control Circuit Inspection

1. IG "OFF".
2. Disconnect A/C Relay.
3. IG "ON".
4. Measure the voltage between terminal 5 of A/C relay and ground.
A. Specification : Approx. 11 V




5. Is the measured voltage within specification?
YES
1) Go to "Component inspection" procedure.
NO
1) Repair Short to power in A/C relay control circuit and then go to "Verification of Vehicle Repair" procedure.