With Manual Climate Control
Magnet ClutchInspection Flow:
TROUBLE DIAGNOSIS PROCEDURE FOR MAGNET CLUTCH
SYMPTOM:
- Magnet clutch does not operate when A/C switch and fan switch are ON.
Steps 1 - 2:
Steps 4 - 6:
Steps 7 - 9:
Steps 10 - 12:
Steps 13 - 14:
DIAGNOSTIC PROCEDURE
SYMPTOM:
- Magnet clutch does not operate when A/C switch and fan switch are ON.
ELECTRICAL COMPONENTS INSPECTION
A/C Switch
A/C Relay
Refrigerant Pressure Sensor
Make sure that higher A/C refrigerant pressure results in higher refrigerant-pressure sensor output voltage.
Check voltage between ECM harness terminal No. 81 and body ground.
INSPECTION
Clutch Disc
If the contact surface shows signs of damage due to excessive heat, replace clutch disc and pulley.
Pulley
Check the appearance of the pulley assembly. If the contact surface of pulley shows signs of excessive grooving, replace clutch disc and pulley. The contact surfaces of the pulley assembly should be cleaned with a suitable solvent before reinstallation.
Coil
Check coil for loose connection or cracked insulation.