Component Tests and General Diagnostics

TROUBLE DIAGNOSIS PROCEDURE FOR MAGNET CLUTCH SYMPTOM:
- Magnet clutch does not operate when A/C switch and fan control switch are ON.




INSPECTION FLOW

Steps 1 - 2:

Steps 3 - 5:

Steps 6 - 7:

Steps 8 - 10:

Steps 11 - 13:

Steps 14 - 15:

Step 16:

MAGNET CLUTCH CIRCUIT SYMPTOM:
- Magnet clutch does not engage when A/C switch and fan control switch are ON.

ELECTRICAL COMPONENT INSPECTION







A/C Relay
Check continuity between terminal Nos. 3 and 5.
If NG, replace relay.







Refrigerant Pressure Sensor
Make sure that higher A/C refrigerant pressure results in higher refrigerant-pressure sensor output voltage.




Thermal Control Amp.
1. Run engine and operate A/C system.
2. Connect voltmeter from harness side.




3. Check thermo control amp. operation shown in the table.