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Interior Modifications

VE Factory Body Control Module Information

Specific interior modification information for Holden Commodore VE and VEII Series Commodores, and HSV E1, E2, and E3 models

Postby ZerOne » Sat Feb 25, 2012 9:31 am

Body Control System Description and Operation

14791

The body control system consists of the body control module (BCM), communications, and various input and outputs. Some inputs, outputs and messages require other modules to interact with the BCM. The BCM also has discrete input and output terminals to control the vehicle's body functions. The BCM is wired to the GMLAN High speed serial data buss and the GMLAN Low speed serial data buss and acts as a gateway between them. If the BCM does not communicate the vehicle will not start due to the inability of the engine control module (ECM) and theft deterrent module (TDM) to communicate without the BCM providing the gateway function.

Power Mode Master

This vehicles BCM functions as the power mode master (PMM). The ignition switch is a low current switch with multiple discrete ignition switch signals to the PMM for determination the power mode that will be sent over the serial data circuits to the other modules that need this information, and so the PMM will activate relays and other direct outputs of the PMM as needed. Refer to Power Mode Description and Operation for a complete description of power mode functions.

Serial Data Gateway

The BCM in this vehicle functions as a gateway or translator. The purpose of the gateway is to translate serial data messages between the GMLAN high speed buss and the GMLAN low speed buss for communication between the various modules. The gateway will interact with each network according to that network's transmission protocol.

One example of this necessary communication is the communication between the ECM which is high speed serial data and TDM which is low speed serial data. If these modules can not exchange information, the vehicle will not start.

Communication between the BCM and a scan tool can be on the high speed GMLAN network or low speed GMLAN network. If one network is lost, the BCM can still communicate with the scan tool. A lost communication DTC typically is set in modules other than the module with a communication failure.

Body Control Module

The various BCM input and output circuits are described in the corresponding functional areas indicated on the BCM electrical schematics. Some BCM functions with the subsystems may be as a gateway only or as an enable for the system. The BCM related systems/subsystems include, but are not limited to the following:


• Antilock Brake System (ABS)
• Cruise Control System
• Exterior Lighting
• Horn System
• HVAC
• Instrument Cluster Indicator Control
• Interior Lighting
• Power Door Lock System
• Rear Window Defogger System
• Redundant Steering Wheel Controls
• Remote Function Actuation (RFA) control
• Retained Accessory Power (RAP)
• Shift Lock Control System - Automatic Transmission Shift Lock Control
• Starting System
• Supplemental Inflatable Restraint (SIR) System
• Vehicle Theft Deterrent and Immobilizer System
• Wiper/Washer System Functions
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Postby ZerOne » Sat Feb 25, 2012 9:40 am

Scantool Information -

Sorry, too much information to copy and paste !!!!!
http://www.carmodder.com/download/BCM_scan_tool.htm
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Postby ZerOne » Sat Feb 25, 2012 9:45 am

BCM Wiring Connectors

14792

14794

BCM X1 Wiring Connector

14793

14782

Code: Select all
Pin 1 - Not Used
Pin 2 - White                    - Ignition Key Resistor Low Reference
Pin 3 - Grey                      - Cruise Control Switch Signal
Pin 4 - White / Black Stripe - Ignition Key Resistor Signal
Pin 5 - Light Green            -  Windshield Wiper Switch High Signal
Pin 6 - Not Used
Pin 7 - Not Used
Pin 8 - Black / White Stripe - Wiper Switch Low Reference
Pin 9 - Light Blue              - Windshield Wiper Switch Low Signal
Pin 10 - Not Used
Pin 11 - Not Used
Pin 12 - Not Used
Pin 13 - Not Used
Pin 14 - Pink                   - Run / Crank Voltage
Pin 15 - Light Blue / White - Left Turn Signal Switch Signal
Pin 16 - Dark Blue / White  - Right Turn Signal Switch Signal
Pin 17 - Purple                 - Remote Radio Control Supply Voltage
Pin 18 - Purple / Yellow     - Headlamp Dimmer Switch High Beam Signal
Pin 19 - Not Used
Pin 20 - Purple / Red        - Transmission Electronic Range Select Signal
Pin 21 - Brown                - Ignition 1 Voltage
Pin 22 - Not Used
Pin 23 - Yellow               - Left Tail Lamp Monitoring (HSV)
Pin 24 - Orange              - Windshield Washer Switch Signal
Pin 25 - Brown / Red       - Flash To Pass Switch Signal


BCM X2 Wiring Connector
14783

Code: Select all
Pin 1 - Orange                  - Inadvertent Power Supply Voltage
Pin 2 - Orange / Blue         - Battery Positive Voltage
Pin 3 - Grey                      - Instrument Panel Lamp Supply Voltage
Pin 4 - Not used
Pin 5 - Dark Blue / White     -  Courtesy Lamp Supply Voltage
Pin 6 - Not Used
Pin 7 - Not Used
Pin 8 - Brown / White         - Park Lamp Switch On Signal
Pin 9 - Not Used
Pin 10 - Dark Blue              - Rear Compartment Relay Switch
Pin 11 -Light Green / Black  - DRL Ambient Light Sensor Signal\
Pin 12 - White                  - Headlamp Switch Headlamps On Signal
Pin 13 - Not Used
Pin 14 - Not Used
Pin 15 - Not Used
Pin 16 - Not Used
Pin 17 - Dark Green           - Headlamp Switch Headlamps Off Signal
Pin 18 - Pink / Black          - Courtesy Lamps Switch Signal
Pin 19 - Not Used
Pin 20 - Light Blue            - Tow/Haul Switch Signal
Pin 21 - Brown / Orange    - Traction Control Switch Signal
Pin 22 - Dark Green / White - A/T Shift Lock Control Solenoid Supply Voltage
Pin 23 - Not Used
Pin 24 - Not Used
Pin 25 - Purple                 - Interior Lamp Switch Signal


BCM X3 Wiring Connector
14784

Code: Select all
Pin 1 - Black                     - Ground
Pin 2 - Orange / Yellow       - Battery + Voltage
Pin 3 - Orange / Red          - Battery + Voltage
Pin 4 - Not Used
Pin 5 - Black                     - Ground
Pin 6 - Not Used
Pin 7 - Grey                      - Security Indicator Control
Pin 8 - Brown / Black          - High Speed Lan Serial Bus +
Pin 9 - Brown                    - High Speed Lan Serial Bus -
Pin 10 - Dark Green            - Low Speed GM Lan Serial Data
Pin 11 - Not Used
Pin 12 - Not Used
Pin 13 - Light Green           - Stop Lamp Switch Signal
Pin 14 - Brown / Red          - Low Reference
Pin 15 - Grey                    - 5V Reference
Pin 16 - Brown / Black        - High Speed Lan Serial Bus +
Pin 17 - Brown                  - High Speed Lan Serial Bus -
Pin 18 - Yellow                 - LED Backlight Dimming Control
Pin 19 - Purple / White       - Communication Enable Relay Control
Pin 20 - Not Used
Pin 21 - Orange                - Fog Lamps Switch
Pin 22 - Not Used
Pin 23 - Not Used
Pin 24 - Not Used
Pin 25 - Purple / White      - RPA Switch LED Dimming Control


BCM X4 Wiring Connector
14785

Code: Select all
Pin 1 - Orange / Red          - Battery + Voltage
Pin 2 - Orange                  - Battery + Voltage
Pin 3 - Orange / Purple       - Battery + Voltage
Pin 4 - Orange / Purple       - Battery + Voltage
Pin 5 - Dark Blue /White     - Right hand side turn signal supply voltage
Pin 6 - Not Used
Pin 7 - Yellow                   - Windscreen Wiper Motor Park Switch Signal
Pin 8 - Not Used
Pin 9 - Black                    - Ground
Pin 10 - Orange / Blue       - Battery + Voltage
Pin 11 - Dark Green / White - Fog Lamps Relay Control
Pin 12 - Not Used
Pin 13 - Not Used
Pin 14 - Orange                - Outside Moisture Sensor Signal 2
Pin 15 - Orange                - Washer fluid pump relay control
Pin 16 - Brown / Yellow      - Headlamp High Beam Relay Control
Pin 17 - Pink / Black          - Hood Ajar Switch Signal
Pin 18 - Brown                 - Outside Moisture Sensor Signal 1
Pin 19 - Dark Blue             - Accessory Wakeup Serial Data
Pin 20 - Not Used
Pin 21 - Pink                    - Run / Crank Control
Pin 22 - Brown                 - Boot Release Relay Control
Pin 23 - Not Used
Pin 24 - Dark Green          - Backup Lamp Relay Control
Pin 25 - Not Used


BCM X5 Wiring Connector
14786

Code: Select all
Pin 1 - Yellow / Black         - Left Rear Turn Signal Lamp Supply Voltage
Pin 2 - Dark Green / White   - Right Rear Turn Signal Lamp Supply Voltage
Pin 3 - Not Used
Pin 4 - Light Blue / White     - Left Front Turn Signal Lamp Supply Voltage
Pin 5 - Brown                    - Puddle Lamp Supply Voltage
Pin 6 - White / Blue           - Stop Lamps Switch Signal
Pin 7 - Not Used
Pin 8 - Pink                      - 5V Reference
Pin 9 - White / Green         - Batery Current Signal
Pin 10 - Brown                  - Low Reference
Pin 11 - Yellow                  - RAP Relay Coil Supply Voltage
Pin 12 - Not Used
Pin 13 - Not Used
Pin 14 - Yellow                 - Accessory Power Relay Control
Pin 15 - Purple                 - Bonnet Closed Switch Signal
Pin 16 - Orange / Black     - Park Brake Switch Signal
Pin 17 - Purple                 - Rear Taillight Monitoring (HSV)
Pin 18 - Brown                 - Horn Relay Control
Pin 19 - Not Used
Pin 20 - Grey                   - Windsheild Wiper Switch Signal 2
Pin 21 - Brown / Red         - Front Widsheild Wiper Switch High Signal
Pin 22 - Not Used
Pin 23 - Pink / White        - Headlamp Low Beam Relay Control
Pin 24 - White / Yellow     - Park Lamp Relay Control
Pin 25 - Not Used


BCM X6 Wiring Connector
14787

Code: Select all
Pin 1 - Not Used
Pin 2 - Light Blue               - Stop Lamp Supply Voltage
Pin 3 - Not Used
Pin 4 - Not Used
Pin 5 - Not Used
Pin 6 - Not Used
Pin 7 - Not Used
Pin 8 - Brown / White        - Passenger Door Ajar Switch
Pin 9 - Not Used
Pin 10 - Grey / Black         - Drivers Door Ajar Switch
Pin 11 - Not Used
Pin 12 - Not Used
Pin 13 - Not Used
Pin 14 - Not Used
Pin 15 - Not Used
Pin 16 - Not Used
Pin 17 - Not Used
Pin 18 - Not Used
Pin 19 - Not Used
Pin 20 - Pink                   - Drivers Door lock switch unlock signal
Pin 21 - Not Used
Pin 22 - Orange / Black     - Liftgate Ajar Switch Signal
Pin 23 - Pink / Black         - Drivers Door Lock Switch lock signal
Pin 24 - Not Used
Pin 25 - Not Used


BCM X7 Wiring Connector
14788

Code: Select all
Pin 1 - Not Used
Pin 2 - White                    - Headlamp Washer Relay Control
Pin 3 - Not Used
Pin 4 - Not Used
Pin 5 - Not Used
Pin 6 - Light Blue              - Door Unlock Supply Voltage
Pin 7 - Dark Blue / White    - Door Lock Control
Pin 8 - Not Used
Pin 9 - White                   - Door Unlock Control
Pin 10 - Grey / Blue          - Headlamp Dimming Switch Up
Pin 11 - Brown / Black      - Power Door Unlock Fuse Supply Voltage
Pin 12 - Grey / Black        - Power Door Lock Fuse Supply Voltage
Pin 13 - Not Used
Pin 14 - Not Used
Pin 15 - Not Used
Pin 16 - Light Blue           - Fog Lamp Switch Output Rear
Pin 17 - Not Used
Pin 18 - Not Used
Pin 19 - Not Used
Pin 20 - Not Used
Pin 21 - Not Used
Pin 22 - Not Used
Pin 23 - Grey / White       - Headlamp Dimming Switch Down
Pin 24 - Not Used
Pin 25 - Not Used
Pin 26 - Not Used
Pin 27 - Not Used
Pin 28 - Not Used
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Postby doubledip » Mon Mar 05, 2012 10:28 pm

2009 VE BCM Bin
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Postby spider » Fri Mar 09, 2012 5:44 pm

Can you tell me if you can reflash BCM to a different VE commodore - change VIN number in BCM ?
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Postby ZerOne » Fri Mar 09, 2012 7:55 pm

You can definitely do it using Tech2, and by the looks of the above EEPROM, it looks like the VIN number is stored in there,
So if you can find the EEPROM on the BCM (I havent had much luck, but my eyesight is very very poor),
Then its a matter of downloading the EEPROM, changing the VIN, then Uploading again.
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Postby doubledip » Sat Mar 10, 2012 1:12 am

Sure can

and definately with a Tech2

the good thing with the BCM is that it is universal... that BCM is becoming the norm across alot of the Holden range

it is backwards compatible/superceeded (if that makes sense ??? LOL )

they are trying to get a common part across all platforms and then just flash to suit application
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Postby spider » Sat Mar 10, 2012 8:31 am

thanks- there seems to be a lot of different types of tech 2 scanners out there. Can you tell me what type will do this job and if there is anyone in Brisbane that can can do it?
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Postby doubledip » Sat Mar 10, 2012 11:31 am

alot of different tech 2 scanners?

there is only one type... where are you seeing the different ones

Have a mate in QLD that does mobile work who oculd prob do for you..

what is it out of (year/month) and whats it going into ?
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Postby spider » Sat Mar 10, 2012 1:50 pm

VE Commodore sept 06 BCM PN15926005 RED - got the exact match just need re flashing with my vin #
mine could be faulty - issue is it can take 4 to 5 goes to start - the immobiliser is getting disabled but unsure if it sending correct code to the ECU - . It could be the ECU but apparently they rarely are faulty!!
I do not want to spend 1k on a new bcm and find out its the ECU but nobody can tell me for 100% if they can be reflashed all I get is NO you can't but I have never tried so I am not a 100%.
Thanks for your help.
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