Functional Check - HVAC System - Manual

System Performance:

Function Check

As an aid in determining whether or not the air conditioning, electrical, air, and refrigeration Systems are operating properly, refer to the System Performance table.

1. The operation of the air conditioning blower at all tour speeds, in any position except the OFF position, and the engagement of the compressor clutch indicate that the electrical circuits are functioning properly. The blower will not operate in any speed with the mode button in the OFF position.
2. The operation of the A/C control selector in the distribution of air from the designated outlets indicates proper functioning.

Cold and Hot Air Test
With the mode knob in DEFROST, the temp knob in HOT, and the fan switch in HIGH, temperature from the defroster outlet should be above the temperature outside of the vehicle.