Circuit Operation

Circuit Operation

The automatic A/C system consists of the following components:

Blower Controls:
- Heater-A/C Relay
- Blower Motor
- Max Hi Relay
- Power Transistor

Compressor Controls:
- A/C Compressor Clutch
- A/C Compressor Relay
- A/C Triple Pressure Switch

Condenser Fan Controls:
- A/C Triple Pressure Switch
- Condenser Fan
- Condenser Fan Relay

Sensor Inputs:
- Evaporator Sensor
- In-Car Temperature sensor
- Outside Temperature Sensor
- Sunlamp Sensor
- Thermo Sensor
- VSS Sensor

Air Delivery Controls:
- Intake Actuator
- Mix Actuator
- Mode Actuator

A/C Controls
- Audio & Switch Assembly
- Auto A/C Control Unit
- MID Display

The Automatic Heater-A/C Control Unit is powered at all times through fuse C-5 and with the engine running through fuse EB-7, and is grounded at all times at B-9.