Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Automatic Temperature Control (ATC) Module: Notes
The automatic temperature control (ATC) module is mounted on the outboard end of the air inlet duct, behind the front passenger side of the instrument panel.
The automatic temperature control (ATC) module processes inputs from the integrated control Panel, system sensors and the medium speed controller area network (CAN) bus, then outputs the appropriate control signals to the air conditioning (A/C) system and the heating and ventilation system. In addition to controlling the air conditioning (A/C) system and the heating and ventilation system, the automatic temperature control (ATC) module also controls the following:
- The front seat heaters.
- The rear window heater. Refer to GLASS, FRAMES AND MECHANISMS .
- The windshield heater. Refer to GLASS, FRAMES AND MECHANISMS .
- The windshield washer jets and exterior mirror heaters. Refer to REAR VIEW MIRRORS .
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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