This vehicle is equipped with a body control module (BCM)
that performs multiple body control functions. The following vehicle systems
are controlled by the BCM:
| - | Key in the ignition reminder |
| - | Fasten seat belt reminder |
| - | Driver information reminder |
| - | Feature customization and diagnostics mode indication |
| - | Auxiliary chime functions (Instrument cluster) |
| - | Last door closed locking reminder |
| • | Inadvertent load monitoring |
| • | Fasten seat belt indicator control |
| • | Interior light illumination |
| • | Power door locks functions |
| • | Keyless entry system functions (with AU0) |
| • | Retained Accessory Power (RAP) |
| • | Content theft deterrent system (with UA6) |
These systems are controlled by the BCM's outputs. The BCM controls
its outputs based upon input information obtained from the sensors and
switches that are directly connected to the BCM. The BCM evaluates
the input information and controls the body systems by commanding
an output on or off.
BCM Identification
This vehicle is equipped with 1 of 3 types of BCMs. The BCM type installed
on this vehicle is based on the vehicle equipment, point of sale, and option
content.
Refer to
On-Board Diagnostic Features
for more information
on how to identify the BCM type installed by using the on-board diagnostic
feature. The following identifies the functions and basic option content of
all 3 BCM types:
BCM Type 2
BCM type 2 is the base BCM that provides all standard BCM functions.
BCM Type 3
BCM type 3 provides all of the features of the BCM type 2 plus
keyless entry. Vehicles with RPO AU0 are equipped with a BCM type 3.
BCM Type 4
BCM type 4 provides all of the features of the BCM type 2
and type 3 plus content theft deterrent. Vehicles with RPO AU0 and
UA6 are equipped with a BCM type 4.
BCM Function
| BCM Type
|
Audible
Warnings
| Type 2,
3, 4
|
Inadvertent Load Monitoring
| Type 2, 3, 4
|
Fasten Seat Belt Indicator Control
| Type 2, 3, 4
|
Interior Light Illumination
| Type 2, 3, 4
|
Auxiliary Chime Functions (IPC)
| Type 2, 3, 4
|
Driver Information Reminder
| Type 2, 3, 4
|
Key Cylinder Unlock
| Type 2, 3, 4
|
Power Door
Lock Functions
| Type 2, 3, 4
|
Automatic Door Locks
| Type 2, 3, 4
|
Feature Customization
| Type 2, 3, 4
|
On-Board Diagnostics
| Type 2, 3, 4
|
Retained Accessory Power (RAP)
| Type 2, 3, 4
|
Keyless Entry
| Type 3, 4
|
Key Cylinder Lock
| Type 4
|
Content Theft Deterrent
| Type 4
|
Interior Lighting
The BCM provides the following interior light functions:
| • | Door key unlock illumination |
| • | Keyless entry unlock illumination |
| • | Inadvertent load (battery rundown) protection |
| • | Interior light feature customization |
| - | Delayed illumination (on/off) |
Refer to the
Interior Lights Circuit Description
in Lighting for customization features.
Automatic Door Locks
The BCM provides the following automatic door lock functions:
| • | Door key all doors unlock |
| • | Door key all doors lock |
| • | Last door closed locking |
| • | Sliding door delayed locking |
| • | Door lock feature customization |
| - | Automatic door lock (on/off) |
| - | Automatic door unlock (on/off) |
| - | Last door closed lock (on/off) |
| - | Lockout prevention (on/off) |
Refer to the
Automatic Door Lock System Description
in Doors for customization features.
Keyless Entry (BCM Type 3, 4)
The BCM provides the following keyless entry functions:
| • | Activation verification (horn and lights) |
| • | Keyless entry feature customization |
| - | Activation verification (lights/horn and lights/off) |
| - | Driver door unlock only (on/off) |
Refer to the
Keyless Entry System Circuit Description
in Keyless Entry for more information.
Content Theft Deterrent (BCM Type 4)
The BCM provides the following content theft deterrent functions:
| - | Power door lock switches |
| - | Flashes the exterior lights |
| • | Content theft feature customization |
| - | Content theft deterrent system (on/off) |
| - | Power door lock switch arming (on/off) |
| - | Door key cylinder arm/disarm (on/off) |
| - | Remote arm/disarm only (on/off) |
Refer to
Content Theft Deterrent (CTD) Circuit Description
in Theft Deterrent for more information.
On-Board Diagnostic Mode
The Body Control Module (BCM) provides on-board diagnostics to assist
in diagnosing BCM related malfunctions. The BCM has the following diagnostic
capabilities when entering the on-board diagnostic mode:
| • | Input/Output Diagnostics |
To access the on-board diagnostic mode, refer to
On-Board Diagnostic Features
.
