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Home >> Oldsmobile >> 1987 >> Toronado >> Repair and Diagnosis (Single Page) >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> A/C-Heater System - Automatic >> Component Functions >> Program Number

Program Number

The program number is calculated by the BCM to express the amount of heating or cooling required to meet the desired in-car temperature. This number is based on the set temperature, outside temperature, in-car temperature and sunload sensor.

The program number is used to determine the proper air delivery mode, and blower speed and is a factor in determining air mix door position. A program number of 0 represents maximum system cooling, a program number of 99 represents maximum heating.

The program number can be observed in the diagnostic mode. This feature allows the technician to manually override this calculated number to observe system operation throughout its entire range.

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