Front - Manual Temperature Control (MTC) Single Zone

MANUAL TEMPERATURE CONTROL (MTC) SINGLE ZONE

The A/C-heater control for the front Manual Temperature Control (MTC) single zone system allows one temperature setting for the entire vehicle. All controls are identified by ISO graphic symbols.

The heating-A/C system uses a dedicated microprocessor to drive the electrically operated door actuators. This control provides the vehicle operator with a number of setting options to help control the climate and comfort within the vehicle.





The A/C-heater control (1) is located in the instrument panel and contains:

- a rotary control for blower motor speed selection, and to turn the blower motor off (2).
- a rotary control for temperature control of the discharged air (3).
- a rotary control for mode control of the discharged air (4).
- a push-button control with an indicator lamp to turn the rear window defogger system on and off (5).
- a push-button control with an indicator lamp to turn the A/C system on and off (6).
- a push-button control with an indicator lamp for recirculation control of the discharged air (7).

The A/C-heater control for the MTC heating and A/C system and is diagnosed using a scan tool Testing and Inspection.

Prior to replacing an A/C-heater control, check for any Diagnostic Trouble Codes (DTCs) related to the heating-A/C system, and run the calibration procedure to verify that the concern is not an air-door calibration issue . HVAC System Test

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