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Home >> Plymouth >> 1978 >> Arrow Base, Automatic Trans >> Repair and Diagnosis (Single Page) >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Auto. A/C Systems >> Testing >> Preliminary Procedure >> Notes

Preliminary Procedure: Notes

With engine warm and running, system "OFF", and thermometer in right center outlet, set voltmeter on Blower Volts and mode knob to A/C (there should be no reading on voltmeter). Adjust engine to 1000 RPM and observe the following: