Compressor Clutch: Testing and Inspection

MAGNET CLUTCH OPERATION CHECK



1. Start engine.
2. Turn fan control knob to operate blower motor.
3. Push A/C switch to ON. Make sure that magnet clutch is engaged. (You can hear magnet clutch engagement sound.)
4. Push A/C switch to OFF. Make sure that magnet clutch is disengaged.

NOTE: If magnet clutch sticks, check magnet clutch.

INSPECTION FLOW



SYMPTOM: Magnet clutch does not engage when A/C switch and fan switch are ON.

DIAGNOSTIC PROCEDURE



PART 1 OF 4




PART 2 OF 4




PART 3 OF 4




PART 4 OF 4

MAGNET CLUTCH 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 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.