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Home >> Jeep >> 2009 >> Grand Cherokee 2WD V8-4.7L >> Repair and Diagnosis >> Heating and Air Conditioning >> Control Assembly >> Description and Operation >> Manual Single Zone
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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:

- a rotary control knob for temperature control of the discharged air (2).
- a rotary control knob for recirculation and mode control of the discharged air (3).
- a push button rear window defogger on/off control (4). The defogger button contains an LED that illuminates when the rear window defogger system is in operation.
- a push button A/C on/off control (5). The Snowflake button contains an LED that illuminates when the A/C system is in operation.
- a rotary control knob for fan speed selection and turning the heating-A/C system off (6).

Prior to replacing an A/C-heater control, check for any Diagnostic Trouble Codes (DTCs) related to the heating-A/C system and initiate the Actuator Calibration function to verify that the concern is not a heating-A/C system issue . Heating and A/C Systems

The A/C-heater control cannot be repaired or adjusted and must be replaced if inoperative or damaged.

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