CONTROL-A/C-HEATER
DESCRIPTION
The A/C-heater controls for the manual temperature control (MTC) single zone front and rear heating-A/C system allows both the front and third row seat passengers the ability to regulate air temperature as well as fan speed and provides a floor outlet near the right rear door and upper air outlets at the top of each interior quarter trim panel. All controls are identified by ISO graphic symbols.
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 a system issue (refer to 24 - HEATING & AIR CONDITIONING - DIAGNOSIS AND TESTING - HEATING AND A/C SYSTEMS and to 24 - HVAC Electrical Diagnostics for more information).
The front and rear A/C-heater controls cannot be repaired must be replaced if found inoperative or damaged.
Primary on/off control for the rear blower motor is provided by a switch (1) located in the accessory switch bezel (2) above the front A/C-heater control.
The rear A/C-heater control (1) is located on the right quarter interior trim panel and allows intermediate seat passengers to adjust rear air distribution, temperature and blower motor speed when the rear on/off control switch in the accessory switch bezel is set to the On position.
The rear A/C-heater control contains:
- a rotary control knob for fan speed selection and turning the rear heating-A/C system 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).
OPERATION
With the rear A/C-heater control active, the rear A/C-heater control allows intermediate seat passengers to adjust rear air distribution, temperature and blower motor speed.
The rear A/C-heater control is diagnosed using a scan tool (refer to 24 - HEATING & AIR CONDITIONING - DIAGNOSIS AND TESTING - HEATING AND A/C SYSTEMS and to 24 - HVAC Electrical Diagnostics for more information).
The rear A/C-heater control cannot be repaired and must be replaced if found inoperative or damaged.
REMOVAL
1. Disconnect and isolate the negative battery cable.
2. Using trim stick C-4755 or equivalent (1), remove the rear A/C-heater control (2) from the bezel (3) located on the right interior quarter trim panel (4), by releasing the retainer clips from the trim panel.
3. Disconnect the wire harness connectors from the rear A/C-heater control and remove the control from the vehicle.
INSTALLATION
1. Position the rear A/C-heater control (1) near the bezel (3) located in the right interior quarter trim panel (4).
2. Connect the wire harness connectors to the back of the rear A/C-heater control.
3. Install the rear A/C-heater control into the bezel and gently push down on the control until the retainer clips (2) fully engage the slots in the bezel.
4. Reconnect the negative battery cable.
5. Initiate the Actuator Calibration function using a scan tool (refer to HVAC System Test, found in 24 - HVAC - Electrical Diagnostics).