Body Control Module: Notes
Vehicle can be equipped with one of 3 different Body Control Modules (BCM) based on vehicle equipment. Standard base models are equipped with BCM type 2 which controls all body control functions, except Remote Keyless Entry (RKE) system and Content Theft Deterrent (CTD) anti-theft system. Models with RKE system are equipped with BCM type 3, and are identified with Regular Production Option (RPO) code AU0. RPO codes, also known as vehicle option content codes, are printed on service parts identification label, located on inside of left quarter trim access panel. See Fig 1 and Figure . Models with RKE system and CTD anti-theft system are equipped with BCM type 4 and are identified with RPO codes AU0 plus UA6.
BCM performs multiple body control functions. The following vehicle functions or systems are controlled by BCM: audible warnings, automatic door locks, CTD anti-theft (if equipped), driver information reminder, fasten seat belt warning indicator control, feature customization settings, inadvertent load monitoring, Instrument Panel (IP) auxiliary chimes, key cylinder lock, key cylinder unlock, interior light illumination, on-board diagnostics, power door locks, Retained Accessory Power (RAP) and RKE (if equipped). Body functions are controlled by output commands from BCM. BCM communicates with other control modules and components using class 2 serial data bus circuit. Class 2 serial data bus circuit is used to share information between other control modules and systems. BCM evaluates input information obtained from sensors and switches that are directly connected to BCM and controls various body systems by commanding an output on or off.