Circuit Description

The general process until magnetic clutch is energized is shown below.
1. Ignition Switch "ON"
2. Blower Switch "ON" Heater Relay "ON" (Blower Motor "RUN")
3. A/C Switch "ON" A/C Amplifier "ON" (A/C Amp. Main Power Supply)
4. Dual Pressure Switch "ON": Refrigerant Condition (2.1 kg/cm2 (30 psi, 206 kPa) less than 27 kg/cm2 (384 psi, 2648 kPa))
5. Thermistor supplies temperature signal of evaporator to A/C amplifier.
6. VSV "ON" E/G Idle Up
7. Magnetic Clutch Relay "ON"
8. Temperature Sensor "ON": Temperature of Temperature Sensor is less than 180°C (356°F).
9. Magnetic Clutch "ON"
10. Revolution Detecting Sensor supplies RPM signal of compressor to A/C amplifier. If compressor is not locked, magnetic clutch is continuously energized.