Chart 3 Improper Air Delivery - Automatic Climate Control

CIRCUIT DESCRIPTION
The Air Conditioning Programmer (ACM) will direct the blended air in one of several air delivery modes. While the side window outlets receive airflow during all modes of operation, the other outlets are directed air by the ACM energizing specific vacuum valves feeding the appropriate combination of mode valve actuators. The ACM determines the proper air delivery mode based upon the current program number, control panel setting, set temperature, low side temperature, coolant temperature, outside air temperature and sun load.

TEST DESCRIPTION
Numbers below refer to circled numbers on the diagnostic chart.

1. Checks the air inlet valve (door).
2. Checks the DOWN part of the UP-DOWN valve (door).
3. Checks the UP part of the UP-DOWN valve (door).
4. Checks the A/C side of the A/C-defrost valve (door).
5. Checks the defrost side of the A/C-defrost valve (door).