Magnet Clutch Circuit
Magnet Clutch CircuitSYMPTOM: Magnet clutch does not engage.
INSPECTION FLOW
SYSTEM DESCRIPTION
Unified meter and A/C amp. (auto amp.) controls compressor operation by ambient temperature and signal from ECM.
Low Temperature Protection Control
Unified meter and A/C amp. will turn the compressor ON or OFF as determined by a signal detected by ambient sensor and intake sensor.
When ambient temperature is higher than -2 °C (28 °F), the compressor turns ON. The compressor turns OFF when ambient temperature is lower than -5 °C (23 °F).
When intake air temperature is higher than 1 °C (34 °F), the compressor turns ON. The compressor turns OFF when intake air temperature is lower than -5 °C (23 °F).
Diagnostic Procedure Step 1:
Diagnostic Procedure Step 2 - 5:
Diagnostic Procedure Step 6 - 7:
Diagnostic Procedure Step 8 - 10:
Diagnostic Procedure Step 11 - 12:
DIAGNOSTIC PROCEDURE FOR MAGNET CLUTCH
SYMPTOM: Magnet clutch does not engage when A/C switch is ON.
COMPONENT INSPECTION
Refrigerant Pressure Sensor
The refrigerant pressure sensor is attached to the condenser.