This vehicle is equipped with a body control module (BCM). The BCM performs multiple body control functions. Several of the vehicle systems are directly connected to the BCM such as the following systems:

These systems are controlled by the BCMs outputs. The BCM controls its outputs based upon the 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.

This vehicle is equipped with one of three BCM types. The BCM type installed on this vehicle is based on vehicle equipment content and options.

The BCM types are:

Refer to Diagnostics later in this section for more information on how to identify the BCM type installed.

The BCM Type 2 provides Retained Accessory Power (RAP), audible warnings, interior lighting, and automatic power door locks.

The BCM Type 3 provides all the features of the BCM type 2 plus keyless entry. Vehicle with RPO AUO are equipped with a BCM type 3.

The BCM Type provides all the features of the BCM type 2 and 3 plus content theft deterrent. Vehicle with RPO AUO and UA6 are equipped with a BCM type 4.

Based on vehicle equipment/options, the Body Control Module (BCM) controls these vehicle systems.

The Retained Accessory Power (RAP) feature allows the operation of the radio, power windows, power mirrors and power sunroof (if equipped) for 10 minutes (or until a vehicle door opens) after the ignition switch has been turned form the RUN or ACC to the OFF or UNLOCK position.

Refer to Retained Accessory Power (RAP) Circuit Description in Retained Accessory Power (RAP).

The following components are equipped with audible warnings.

Refer to Audible Warnings Circuit Description in Audible Warnings.

The following areas are features of the interior lighting.

Refer to Interior Lights Circuit Description in Interior Lighting.

The BCM type 2 has these automatic door lock features:

The BCM type 3 has these automatic door lock features, in addition to BCM type 2 features:

The BCM type 4 has this automatic door lock feature, in addition to BCM type 2 and 3 features. A key cylinder unlock.

The BCM provides feature customization of these door lock functions:

Refer to Automatic Door Lock Circuit Description in Automatic Door Locks.

The Body Control Module (BCM) type 3 provides these keyless entry features:

Refer to Keyless Entry System Circuit Description in Keyless Entry.

The Body Control Module (BCM) type 4 features a content theft deterrent system which is designed to deter vehicle vandalism and theft. The content theft deterrent system perform these functions:

The BCM monitors the following:

The BCM operates the headlamps, horn and the theft deterrent indicator lamp according to the mode of operation the system is in. The BCM also communicates a fuel enable signal to the Powertrain Control Module (PCM) when the system is disarmed.

Refer to Content Theft Deterrent (CTD) Circuit Description in Content Theft Deterrent.

The Body Control Module (BCM) provides diagnostics to assist service technicians during troubleshooting. The BCM has the following diagnostic capabilities when entering the diagnostics mode:

When you perform BCM diagnostics, enter the feature customization mode. During this mode, the BCM identifies itself. This ensures that the option content of the vehicle matches the capabilities of the BCM.

Complete the following steps in order to enter the feature customization mode:

1. Turn the ignition switch to the OFF position.
2. Remove the MALL PGM fuse.
3. Turn the ignition switch to the ACC position.

Upon entering the feature customization mode, the BCM flashes the fasten belts indicator and sounds the chime 2, 3 or 4 times. The number of chimes is equal to the BCM type used on the vehicle. Ensure that the BCM installed on the vehicle is compatible with all the features on the vehicle. If an incorrect BCM is installed, replace the BCM with the correct type.

At this point, the following vehicle systems have features that can be customized: