Manual Three Zone

MANUAL TRI ZONE

The Manual Temperature Control (MTC) Tri Zone heating-A/C system allows the driver and the front and rear seat passengers the ability to regulate air temperature for their individual zones. Operation of the rear controls can be locked out by the front A/C-heater control. All controls are identified by International Standardization Organization (ISO) graphic symbols.

FRONT CONTROL PANEL





The front A/C-heater control (1) for the Manual Temperature Control (MTC) Tri Zone heating-A/C system allows both the driver and the front seat passenger the ability to individually regulate air temperature for their side of the vehicle.

The MTC A/C-heater control and integral computer is located in the instrument panel and contains:

- two rotary control knobs for individual driver and front seat passenger temperature control of the discharged air (2).
- five push buttons for mode control of the discharged air (3, 4, 9, 10 and 11). Each mode control button contains an LED that illuminates when manually activated.
- a push button rear window defogger on/off control (5). The defogger button contains an LED that illuminates when the rear window defogger system is in operation.
- a push button air recirculation control (6). The Recirculation button contains an LED that illuminates when the recirculation function is manually activated.
- a rotary control knob for fan speed selection and turning the heating-A/C system off (7).
- a push button A/C on/off control (8). The A/C button contains an LED that illuminates when the A/C system is in operation.

Prior to replacing an A/C-heater control, check and repair any Diagnostic Trouble Codes (DTCs) related to the heating-A/C system and initiate the Actuator Calibration function .

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

REAR CONTROL PANEL





The rear MTC A/C-heater control (1) is located in the rear overhead console and allows intermediate seat passengers to adjust rear air distribution, temperature and blower motor speed when the rear heating-A/C system primary on/off control in the front A/C-heater control in the instrument panel is set to the on position and the rear heater-A/C controls are NOT locked out by the driver and front seat passenger.

The rear A/C-heater control contains:

- a rotary control knob for fan speed selection and turning the rear heating-A/C system on and off (2).
- a rotary control knob for temperature control of the rear discharged air (3).
- a rotary control knob for mode control of the rear discharged air (4).

The rear A/C-heater control is a slave potentiometer to the front A/C-heater control.

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