Operation CHARM: Car repair manuals for everyone.

Rear A/C

The operation of the A/C system is controlled by knobs and buttons on the control head. The compressor clutch and blower are connected electrically to the control head by a wiring harness. Air flow is provided by the five blower speeds available. Cooled and dehumidified air is available in all modes. A/C compressor operation is forced in defog and defrost modes and is available in remaining modes by pushing A/C button-to-light indicator above button. Low ambient temperatures will permit operation of A/C compressor.

The temperature knob controls the temperature valve through a potentiometer in the control. The modes of operation are controlled by vacuum actuators, that control the flow of vacuum on the various vacuum valve positioning actuators. The knob on the left controls blower motor speed. Turning the knob to the right increases motor speed. The blower is turned off in the "OFF" position.

Temperature valve position is independent of mode selection.