Function Selector Lever
WARNING: This page is about a different car, the 1995 Ford Explorer. However, it is still accessible from the selected car via links, so may be relevant.
The function selector actuates an 8-port A/C which controls vacuum control motors at floor, defrost/panel, defrost and outside/recirculation air doors. See Fig 1. The function selector also controls ON/OFF operation of the heater blower motor switch and activates the circuit for the A/C clutch circuit in the A/C position.
In either A/C position (MAX or NORM) and in FLOOR/DEFROST and DEFROST positions, compressor operation is dependent on the A/C cycling switch. See Figure. Cutout pressure is about 23 psi (1.6 kg/cm2 ). Cut-in pressure is about 46 psi (3.2 kg/cm2 ). The FUNCTION & TEMPERATURE LEVER SETTING RELATIONSHIPS table shows relationships between function selector and temperature selector lever settings.
FUNCTION & TEMPERATURE LEVER SETTING RELATIONSHIPS
| Lever Position | Airflow Direction | |
|---|---|---|
| Function Lever | ||
| Panel | Instrument Panel Registers | |
| PNL/FLR | Split Between Instrument Panel Registers & Floor Outlets | |
| Floor | Floor Outlets With Bleed To Defrosters | |
| FLR/DEF | Split Between Floor Outlets And Defrosters | |
| Defrost | Defroster With Bleed To Floor Outlets | |
| Max A/C | Instrument Panel Registers | |
| Temperature Lever | ||
| Cool (Full) | All Air Bypasses Heater Core | |
| Warm (Full) | All Air Flows Through Heater Core | |
| Between Cool | Amount Of Air Through Heater Core Is | |
| And Warm | Proportionate To Amount That Blend Air Door Is Opened Or Closed To The Extremes Of Cool Or Warm | |