Electronic Manual Temperature Control System
WARNING: This page is about a different car, the 2005 Ford Pickup. However, it is still accessible from the selected car via links, so may be relevant.
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.
- In FLOOR/DEFROST and DEFROST the indicator 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.
The air recirculation button:
- Selects either recirculated or outside air source.
- Is only 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.
- Is serviced only with the climate control assembly.