Durango 4WD V8-4.7L VIN P Flex Fuel (2007)
Control Assembly: Description and Operation
Controls - Front
Manual Single Zone
MANUAL SINGLE ZONE
The A/C-heater control (1) for the manual temperature control (MTC) single zone heating-A/C system allows one temperature setting for the entire
vehicle. All controls are identified by ISO graphic symbols.
The A/C-heater control and integral computer is located in the instrument panel and contains:
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a rotary control knob for rear window washer operation and rear window wiper speed selection (2).
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a slider control knob for temperature control of the discharged air (3).
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a rotary control knob for fan speed selection and turning the heater-A/C system off (4).
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a rotary control knob for mode control of the discharged air (5).
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a push button A/C on/off control (6). The Snowflake button contains an LED that illuminates when the A/C system is in operation.
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a push button rear window defogger on/off control (7). The button contains an LED that illuminates when the rear window defogger system is in
operation.
The A/C-heater control for the manual single zone heating and A/C system is diagnosed using a scan tool.
The A/C-heater control cannot be repaired or adjusted and must be replaced if found inoperative or damaged. The illumination lamps (8) and control
knobs are available for service replacement.
The A/C-heater control utilizes integrated circuitry and information carried on the controller area network (CAN) B bus to monitor many sensors and
switch inputs throughout the vehicle. In response to those inputs, the internal circuitry and programming of the A/C-heater control allows it to control
electronic functions and features of the MTC heating-A/C system.
The inputs received by the A/C-heater control of the MTC heating-A/C system on the CAN B bus are as follows:
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Dimming
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Refrigerant Pressure
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Vehicle Identification Number
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Vehicle Odometer
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Engine Coolant Temperature
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Ambient Air Temperature
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Vehicle Speed
The messages broadcasted by the A/C-heater control of the MTC heating-A/C system on the CAN B bus are as follows:
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A/C Request
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A/C Select
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Rear Window Defogger (EBL) Request
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Rear Washer Request
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Rear Wiper Request
