Electronic Manual Temperature Control System
The electronic manual temperature control (EMTC) system operation is determined by the settings on the climate control assembly. The climate control assembly includes a serviceable blower motor switch.
The blower motor switch:
- sets the blower motor speed.
- directs the blower motor path to ground through the blower motor resistor to allow blower motor operation in LO, MED LO and MED HI.
- directs the blower motor path directly to ground, bypassing the blower motor resistor, to allow blower motor operation in HI.
The A/C request switch:
- can command the A/C compressor ON when the function selector switch is in PANEL, FLOOR/PANEL, FLOOR/DEFROST and FLOOR when the A/C request switch is pressed. Indicator illuminates when A/C request switch is toggled ON.
- can command the A/C compressor OFF in FLOOR/DEFROST if RECIRC is commanded OFF.
- is inoperative in MAX A/C, OFF and DEFROST.
- indicator illuminates when the function selector switch is in MAX A/C and cannot be toggled.
- indicator does not illuminate in OFF and cannot be toggled.
- indicator in FLOOR/DEFROST and DEFROST does not change. The A/C compressor will operate regardless of indicator status if the outside air temperature is above 2°C (35°F).
- is serviced only with the climate control assembly.
The function selector switch:
- selects airflow direction.
- is serviced only with the climate control assembly.
NOTE:
Recirculated air only is used when the electronic manual temperature control mode selector is set in the MAX A/C or OFF modes or if the RECIRC request button is selected in any mode except MAX A/C, OFF or DEFROST.
The air recirculation button:
- selects either recirculated or outside air source.
- is serviced only with the climate control assembly.