Body Control Module

BODY CONTROL MODULE
The body control module (BCM) supplies vehicle occupants with visual and audible information and controls various vehicle functions. To provide and receive information, the module is interfaced to the vehicle's serial bus communications network (the Programmable Communication Interface or PCI bus). This network consists of the body control module (BCM), powertrain control module (PCM), sentry key immobilizer module (SKIM), the electro/ mechanical instrument cluster (MIC), compass/ mini-trip computer (CMTC), airbag control module (ORC), optional antilock brakes (ABS), the optional automatic temperature control module, the optional radio, the optional satellite radio receiver and remote CD-player. The (BCM) is operational when battery power is supplied to the module, ignition switch power is needed for ignition switched functions.
The body control module provides the following features:
A/C switch status/evaporator temperature status
BCM diagnostic support Central lock and unlock (VTSS only)
Climate Control system support
Door ajar switch status
Door Lock Inhibit (key in ignition or headlamps/ park lamps on)
Electronic Odometer Support
Headlamp Time Delay
Illuminated Entry with "fade to off"
Interior lighting with battery save feature
Mechanical Instrument Cluster (fuel level, dim data, odometer & warning chime) support
Travel information system
Power convertible top Power door lock multiplexing control
Rear Window Defogger Control
Remote Keyless Entry with Panic Mode
Remote power deck lid release
Remote radio switch control
Rolling door lock control (customer programmable)
Sentry key immobilizer support
Vehicle Theft Security System
Wiper Control (speed sensitive with return to park)

The BCM receives information over the PCI Bus from the PCM in order to support certain features.

The required information is as follows:
- Engine RPM
- Engine Temperature
- Injector on Time and Distance Pulses
- Vehicle Speed
- Charging System Failure, Engine Temperature Limp-In, VTSS Arming Status
- Engine Model
- "Check Engine" lamp status

The BCM provides the PCM with information on the A/C switch status and the VTSS status.







The JR has several customer programmable features which can be disabled or enabled by the customer.