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.
Body Control Computer System
The body control computer system consists of a combination of modules that communicate over the Programmable Communication Interface (PCI) bus multiplex system. Through the PCI bus, information related to the operation of vehicle components and circuits are relayed to the appropriate system module(s). This reduces the complexity of vehicle wiring and size of wiring harness.
The vehicle systems that are part of the "body" system are:
- Airbag
- Audio
- Automatic Temperature Control
- Cabin Heater
- Chime
- Communication
- Door Ajar System
- Electrically Heated System
- Exterior Lighting
- Instrument Cluster
- Interior Lighting
- Manual Temperature Control
- Memory Seat
- Overhead Console
- Power Door Lock/RKE
- Power Folding Mirrors
- Power Sliding Doors
- Power Liftgate
- Power Windows
- Tire Pressure Monitor
- Vehicle Theft Security System (VTSS)
- Windshield Wiper and Washer
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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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