Hummer H2. Manual - part 427

Window Terminal Identification Motor - RR 

Window Terminal Identification Switch - LR 

Connector Part Information

z

12129487  

z

2-Way F Metri-Pack 280 Series Flexlock Sealed (M-GY)  

Pin

Wire Color

Circuit No.

Function

A

BN

669

Power Window Motor Left Rear Down Control

B

D-BU

668

Power Window Motor Left Rear Up Control

Connector Part Information

z

12129487  

z

2-Way F Metri-Pack 280 Series Flexlock Sealed (M-GY)  

Pin

Wire Color

Circuit No.

Function

A

BN

671

Power Window Motor Right Rear Down Control

B

D-BU

670

Power Window Motor Right Rear Up Control

 

2004 Hummer H2 

2004 ACCESSORIES & EQUIPMENT Doors - Hummer H2

  

Window Terminal Identification Switch - RR 

Connector Part Information

z

12191825  

z

8-Way F Metri-Pack 280 Series (BN)  

Pin

Wire Color

Circuit No.

Function

A

OG

1240

Battery Positive Voltage

B

YE

1187

Power Window Switch Relay Left Rear Down Control

C

WH

1185

Power Window Switch Relay Left Rear Up Control

D

L-BU

2265

Power Window Lockout Left Rear Signal

E

BK

1150

Ground

F

D-BU

668

Power Window Motor Left Rear Up Control

G

BN

669

Power Window Motor Left Rear Down Control

H

BN/WH

230

Instrument Panel Lamps Dimming Control

 

2004 Hummer H2 

2004 ACCESSORIES & EQUIPMENT Doors - Hummer H2

  

DIAGNOSTIC INFORMATION AND PROCEDURES 

DIAGNOSTIC STARTING POINT - DOORS 

Begin the system diagnosis with the Diagnostic System Check - Door Systems . The Diagnostic System 
Check will provide the following information: 

z

The identification of the control module(s) which command the system.  

z

The ability of the control module(s) to communicate through the serial data circuit.  

z

The identification of any stored diagnostic trouble codes (DTCs) and their status.  

The use of the Diagnostic System Check will identify the correct procedure for diagnosing the system and 
where the procedure is located. 

DIAGNOSTIC SYSTEM CHECK - DOOR SYSTEMS 

Test Description 

The numbers below refer to the step numbers on the diagnostic table. 

2: Lack of communication may be due to a partial malfunction of the class 2 serial data circuit or due to a 
total malfunction of the class 2 serial data circuit. The specified procedure will determine the particular 
condition.  

5: The presence of DTCs which begin with "U" indicate some other module is not communicating. The 
specified procedure will compile all the available information before tests are performed.  

Diagnostic System Check - Door Systems 

Connector Part Information

z

12191825  

z

8-Way F Metri-Pack 280 Series (BN)  

Pin

Wire Color

Circuit No.

Function

A

OG

1340

Battery Positive Voltage

B

D-GN

1188

Power Window Switch Relay Right Rear Down Control

C

GY/BK

1186

Power Window Switch Relay Right Rear Up Control

D

L-GN

2266

Power Window Lockout Right Rear Signal

E

BK

1250

Ground

F

D-BU

670

Power Window Motor Right Rear Up Control

G

BN

671

Power Window Motor Right Rear Down Control

H

BN/WH

230

Instrument Panel Lamps Dimming Control

Step

Action

Yes

No

1

Install a scan tool. 
Does the scan tool power up?

Go to Step 2

Go to Scan Tool Does Not 

Power Up in Data Link 

Communications

 

2004 Hummer H2 

2004 ACCESSORIES & EQUIPMENT Doors - Hummer H2

  

2

1. Turn ON the ignition, with the 

engine OFF.  

2. Attempt to establish 

communication with the 
following modules: 

z

The driver door module  

z

The passenger door 
module  

z

The body control module  

z

The powertrain control 
module  

z

The instrument panel 
cluster  

Does the scan tool communicate with 
all of the modules?

Go to Step 3

Go to Scan Tool Does Not 

Communicate with Class 2 

Device in Data Link 

Communications

3

1. Access the Class 2 Power Mode 

in the Diagnostic Circuit Check 
on the scan tool.  

2. Rotate the ignition switch 

through all positions while 
observing the ignition switch 
power mode parameter.  

Does the ignition switch parameter 
reading match the ignition switch 
position for all switch positions?

IMPORTANT:

The engine may start during the 
following step. Turn OFF the engine 
as soon as you have observed the 
Crank power mode.

Go to Step 4

Go to Power Mode 

Mismatch in Body Control 

System

4

With the scan tool, select the Display 
DTCs function for each of the 
following modules: 

z

The driver door module  

z

The passenger door module  

z

The body control module  

z

The powertrain control module  

z

The instrument panel cluster  

 

2004 Hummer H2 

2004 ACCESSORIES & EQUIPMENT Doors - Hummer H2