Body Control Systems: Description and Operation: Overview

Multifunction Electronic Modules

Overview

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

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

- IA (Intelligent Access) function

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

- Keyless entry keypad

- Liftgate release

- PATS (Passive Anti-Theft System)

- Power door locks