Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

Or, hide this message: temporarily or permanently

Body Control Systems: Description and Operation

MODULE CONTROLLED FUNCTIONS

There are 2 multifunction electronic modules on vehicle. They include the smart junction box (SJB) and the driver seat module (DSM).

Smart Junction Box (SJB)
The SJB is a combination of a multifunction electronic module and an interior fuse panel. SJB functions control multiple vehicle systems, which include:
- Battery saver relay
- Brake shift interlock
- Delayed accessory
- Exterior lighting
- Global open (front windows only)
- Heated rear window
- Horn
- Interior lighting
- Perimeter anti-theft (MKX only)
- Power locks
- Remote keyless entry (RKE) system
- Tire pressure monitoring system (TPMS)
- Windshield wiper

Driver Seat Module (DSM)
The DSM (if equipped) controls the exterior memory mirrors and the driver memory seat functions.