Body Control Systems: Description and Operation: Overview

Multifunction Electronic Modules

Overview

The BCM (Body Control Module) controls:
- Battery saver function
- Brake shift interlock
- Delayed accessory function
- Dimmable backlighting
- Exterior lighting
- Ignition state messaging
- Interior lighting
- Key validation (part of the PATS (Passive Anti-Theft System))
- Liftgate release
- PATS (Passive Anti-Theft System) (vehicles without IA (Intelligent Access))
- Perimeter alarm
- Power door locks (vehicles without door module)
- Post crash alert function
- RKE (Remote Keyless Entry) system (without IA (Intelligent Access))
- TPMS (Tire Pressure Monitoring System)
- Transport mode

The RFA (Remote Function Actuator) (with IA (Intelligent Access) only) controls:

- IA (Intelligent Access) function

- Key validation (part of the PATS (Passive Anti-Theft System))

- PATS (Passive Anti-Theft System)

- RKE (Remote Keyless Entry) signals (output controlled by the BCM (Body Control Module))