GM Service Manual Online
For 1990-2009 cars only
Table 1: Body Control Module (BCM) Scan Tool Data Parameters
Table 2: Body Control Module Scan Tool Output Controls

Body Control Module (BCM) Scan Tool Data Parameters

Parameter

System State

Expected Value

Definition

Operating Conditions: Engine ON

Automatic Door Locking

--

No

The scan tool displays Yes or No. This is the current status of the automatic door locking feature.

Automatic Door Unlocking

--

No

The scan tool displays Yes or No. This is the current status of the automatic door unlocking feature.

Cruise Control

--

OK

The scan tool displays OK or Fault. This is the current status of the cruise control system.

Driver Door Jamb Sw.

--

Off

This displays On or Off. This is the current status of the driver door jamb switch.

Hatch/Trunk Ajar

--

Varies

The scan tool displays Active or Inactive. This is the current status of the hatch/trunk ajar signal.

Ign. Accessory

--

Inactive

The scan tool displays Active or Inactive. This is the status of the ignition accessory.

Ignition Switch

--

On

The scan tool displays On or Off. This is the current status of the ignition switch.

IPC Serial Communications Fault

--

Off

The scan tool displays On or Off. This is the current status of communication with the IPC.

Park Assist System Status

--

Not Equipped

This displays Equipped or Not Equipped. This is displayed if vehicle is park assist system equipped

Parking Brake Switch

--

Off

This displays On or Off. This is the current status of the parking brake.

Passenger Door Ajar Sw.

--

Off

This displays On or Off. This is the current status of the passenger door ajar switch.

Remote Panic Command

--

No

The scan tool displays Yes or No. This is the current status of the key fob panic command.

Sunroof Enable Command

--

Enable

This displays Enable or Disable. This is the current status to open the sunroof.

Theft Deterrent Status

--

OK to Start

This displays OK to Start or No Start. This is the current vehicle start status.

Tire Pressure Monitor

--

Not Present

This displays Present or Not Present. This is displayed if vehicle is TPM equipped.

Body Control Module Scan Tool Output Controls

Scan Tool Output Control

Description

Door Lock

This output control is used to command the door lock On and Off.

Driver Door Unlock

This output control is used to command the driver door unlock On and Off.

Headlamps

This output control is used to command the headlamp relay On and Off.

Horn

This output control is used to command the vehicle horn On and Off.

Interior Lamps

This output control is used to command the illuminated entry system On and Off.

Security Lamp

This output control is used to command the daytime running lamps On and Off.

Fog Lamps

This output control is used to command the fog lamps On and Off.

High Beams

This output control is used to command the security indicator On and Off.

Theft System Horn

This output control is used to command the security horn On and Off.

Twilight Sentinel

This output control is used to command the twilight relay On and Off.