NOTE: For connector terminal ID, see CONNECTOR IDENTIFICATION and WIRING DIAGRAMS .

Reconnect all previously disconnected components and connectors. If neither battery nor Body Control Module (BCM) have been disconnected, and no work has been done on Automatic Temperature Control (ATC) system, ensure ignition is on and go to step 3). If battery or BCM have been disconnected, or if any work has been done on Automatic Temperature Control (ATC) system, go to next step.
DO NOT move vehicle in following step. Start engine. Using scan tool, calibrate ATC doors. Go to next step.
Using scan tool, erase DTCs. Turn ignition off and wait 5 seconds. Fully operate system that was malfunctioning by turning switch on, opening door, etc. If system operates properly, go to next step. If system does not operate properly, return to SYMPTOM ID TEST 1A .
Using scan tool, read BCM DTCs. If any DTCs are present, return to SYMPTOM ID TEST 1B . If no DTCs are present and original complaint cannot be duplicated, repair is complete.

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.

Safety Warning

Test VER-1 - Verification Procedure