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.
Circuit/System Description
Voltage for the courtesy lamps is supplied from the Interior Lights Fuse in the instrument panel I/P electrical center to the body control module (BCM). When a door is opened, a signal is applied to the door module. The door module then applies a message to the LAN communication circuit to the BCM. The BCM then applies voltage to the courtesy lamps voltage supply circuit. The courtesy lamps are composed of the following components:
- Dome lamps
- Reading lamps
- Cargo Lamps
NO RELATED
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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.