Turn the headlamp switch to the PARK position.

Do the exterior lights turn on?

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Go to Step 2

Go to Exterior Lights System Check

1. Remove the key from the ignition switch.
2. Turn the IP dimmer switch off.
3. Turn on the interior lights override switch enabling the interior lights.
4. With the driver's door open, press lock on the door lock switch.
5. Close all the vehicle doors.
6. Insert the key in the left front, right front or liftgate door key cylinder lock.
7. While observing the interior courtesy lights, turn and hold the key for a second in order to unlock the door.

Do the interior courtesy lights turn on for 40 seconds upon unlocking any door with the key?

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Go to A Diagnostic System Check - Body Control System

Go to Interior Lamps System Check