General

The automatic climate control assembly is the Electronic Climate Control (ECC) module. The control assembly contains the following controls:
^ A rotary knob to control blower speed
^ A rotary knob to control the air temperature
^ A rotary knob to select the desired operating mode
^ Up to four push buttons, depending on option content, that control:
- Recirculated air
- Fresh air
- A/C operation
- Rear Defogger (RPO C49)

The controls are lit when the parking lamps or headlamps are ON. The instrument panel lighting circuit provides voltage. The control assembly lamps are in parallel with the following components:
^ The instrument cluster bulbs
^ The radio dial bulb
^ Other interior illumination bulbs

The dimmer control of the headlamp switch controls the brightness of the control assembly lamps.

For a description of the RPO Code(s) shown in this article/image, refer to the RPO Code List found at Vehicle/Application ID.

Application and ID