Hummer H2. Manual — part 183

Body Control Module (BCM) Terminal Identification - C5

Connector Part Information

z

12110206

z

24-Way F Micro-Pack 100 Series (L- BU)

Pin

Wire Color

Circuit No.

Function

A1

L- GN

80

Key In Ignition Switch Signal

A2

YE

307

Headlamp Switch Flash to Pass Signal

A3

WH

530

Off/Run/Crank Voltage

A4

PK

39

Ignition 1 Voltage

A5-A6

-

-

Not Used

A7

L- BU

1134

Park Brake Switch Signal

A8

GY

1524

Backup Lamp Signal

A9-A11

-

-

Not Used

A12

WH

103

Headlamp Switch Headlamps On Signal

B1-B2

-

-

Not Used

B3

YE

43

Accessory Voltage

B4-B5

-

-

Not Used

B6

GY/BK

2226

Instrument Panel Lamps Dimmer Switch Low Reference

B7

BK

279

Ambient Light Sensor Low Reference

B8

-

-

Not Used

B9

D- BU/WH

1495

Courtesy Lamps On Signal

B10-B12

-

-

Not Used

2004 Hummer H2

2004 ACCESSORIES & EQUIPMENT Body Control System - Hummer H2

Body Control Module (BCM) Terminal Identification - C6

Connector Part Information

z

12177195

z

6-Way F Metri-Pack 150 Series (BK)

Pin

Wire Color

Circuit No.

Function

A-C

-

-

Not Used

D

OG

2140

Battery Positive Voltage

E

GY/BK

690

Courtesy Lamp Control

F

L- GN

24

Backup Lamp Supply Voltage

Connector Part Information

z

12191375

z

16-Way F Micro-Pack 100 Series (PU)

Pin

Wire Color

Circuit No.

Function

2004 Hummer H2

2004 ACCESSORIES & EQUIPMENT Body Control System - Hummer H2

DIAGNOSTIC INFORMATION AND PROCEDURES

DIAGNOSTIC STARTING POINT - BODY CONTROL SYSTEM

Begin the diagnosis of the body control system by performing the diagnostic system check for the system in
which the customer concern is apparent. The diagnostic system check will direct you to the correct procedure
for diagnosing the system and where the procedure is located.

SCAN TOOL OUTPUT CONTROLS

Scan Tool Output Controls

SCAN TOOL DATA LIST

Scan Tool Data List

A1

PK/BK

1303

Liftgate Ajar Switch Signal

A2

L- GN/BK

748

Right Rear Door Ajar Switch Signal

A3

L- BU/BK

747

Left Rear Door Ajar Switch Signal

A4

-

-

Not Used

A5

L- BU

2265

Power Window Lockout Left Rear Control

A6

L- GN

2266

Power Window Lockout Right Rear Control

A7

GY/BK

1186

Power Window Relay Right Rear Up Control

A8

D- GN

1188

Power Window Relay Right Rear Down Control

B1

-

-

Not Used

B2

WH

194

Rear Door Unlock Switch Signal

B3

L- BU

195

Rear Door Lock Switch Signal

B4-B6

-

-

Not Used

B7

YE

1187

Power Window Relay Left Rear Down Control

B8

WH

1185

Power Window Relay Left Rear Up Control

Scan Tool Output Control

Additional Menu Selection(s)

Description

Power Down Now

-

It shuts down all the class 2 modules.

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Operating Conditions: Ignition ON, Engine OFF.

Battery Voltage

Data

Volts

12.5

SWC Switch Voltage

Data

Volts

0

GM Part Number

ID information

8 digits

xxxxxxxx

Julian Date of Build

ID Information

3 digits

xxx

Year Module Built

ID information

4 digits

xxxx

Ignition 0

Inputs

On/Off

On

Ignition 1

Inputs

On/Off

On

Ignition Accessory

Inputs

Active/Inactive

Active

2004 Hummer H2

2004 ACCESSORIES & EQUIPMENT Body Control System - Hummer H2

SCAN TOOL DATA DEFINITIONS

Battery Voltage

The scan tool displays 0.0-16.0 volts. The battery voltage input represents the system voltage measured at
the BCM ignition feed input.

GM Part Number

The module's part number.

Ignition Accessory

Input from ignition switch Accessory circuit. Used to determine power mode. Hot in ACC and ON.

Ignition 0

Input to the control module from the ignition switch indicating the Ignition 0 position. Switch closed
(HOT) in ignition switch positions UNLOCK, ACC, ON, and START

Ignition 1

Input to the control module from the ignition switch indicating the Ignition 1 position. Switch closed
(HOT) in ignition switch positions ON and START

Key in Ignition

Input from ignition switch indicating that the ignition key is inserted into the ignition switch. HOT with
key in ignition switch.

Julian Date of Build

The day of the year when module was built.

SWC Switch Power

Indicates the state of the supply voltage to the steering wheel controls supply voltage.

SWC Switch Voltage

Indicates the steering wheel controls supply voltage.

Year Module Built

Key in Ignition

Inputs

Yes/No

Yes

SWC Switch Power

Outputs

On/Off

On

2004 Hummer H2

2004 ACCESSORIES & EQUIPMENT Body Control System - Hummer H2