Magnet Clutch Circuit

SYMPTOM: Magnet clutch does not engage.

Inspection Flow:

SYSTEM DESCRIPTION
Auto amplifier controls compressor operation by ambient temperature and signal from ECM.




Low Temperature Protection Control
Auto amp. will turn the compressor ON or OFF as determined by a signal detected by ambient sensor.

When ambient temperatures are greater than -2�C (28�F), the compressor turns ON. The compressor turns OFF when ambient temperatures are less than -5�C (23�F).

DIAGNOSTIC PROCEDURE




SYMPTOM: Magnet clutch does not engage when A/C switch is ON.

Step 1:

Step 2 - 4:

Step 5 - 8:

Step 9 - 13:

COMPONENT INSPECTION







Refrigerant Pressure Sensor
The refrigerant pressure sensor is attached to the condenser.
- Refer to "REFRIGERANT PRESSURE SENSOR". Refrigerant Pressure Sensor / Switch







Thermo Control Amp.
1. Run engine and operate A/C system.
2. Connect the voltmeter from harness side.
3. Check the thermo control amp. operation as shown in the table.