Hummer H2. Manual - part 510

DOWN position.  

Does the test lamp illuminate?

Go to Step 15

Go to Step 22

15

1. Connect a test lamp between the power 

window motor up and down control circuits.  

2. Activate the power window switch to the UP 

and DOWN positions.  

Does the test lamp illuminate in both positions?

Go to Step 26

Go to Step 25

16

1. Disconnect the appropriate rear power 

window switch.  

2. With a test lamp connected to battery positive 

voltage, probe the power window up signal 
circuit at the rear window switch harness 
connector.  

3. Activate the appropriate rear window switch 

on the master switch to the UP position.  

Does the test lamp illuminate?

Go to Step 17

Go to Step 19

17

1. With a test lamp connected to battery positive 

voltage, probe the power window down 
signal circuit at the rear window switch 
harness connector.  

2. Activate the appropriate rear window switch 

on the master switch to the DOWN position.  

Does the test lamp illuminate?

Go to Step 25

Go to Step 20

18

Test for an open in the window lockout signal 
circuit. Refer to Circuit Testing and Wiring 
Repairs in Wiring Systems. 
Did you find and correct the condition?

Go to Step 33

Go to Step 23

19

Test for an open or short to ground in the power 
window up or down signal circuit. Refer to Circuit 
Testing and Wiring Repairs in Wiring Systems. 
Did you find and correct the condition?

Go to Step 33

Go to Step 23

20

Test for an open or short to ground in the power 
window up or down signal circuit. Refer to Circuit 
Testing and Wiring Repairs in Wiring Systems. 
Did you find and correct the condition?

Go to Step 33

Go to Step 23

21

Test for an open or short to ground in the power 
window motor up control circuit. Refer to Circuit 
Testing and Wiring Repairs in Wiring Systems. 
Did you find and correct the condition?

Go to Step 33

Go to Step 25

Test for an open or short to ground in the power 

 

2004 Hummer H2 

2004 ACCESSORIES & EQUIPMENT Doors - Hummer H2

  

22

window motor down control circuit. Refer to 
Circuit Testing and Wiring Repairs in Wiring 
Systems. 
Did you find and correct the condition?

Go to Step 33

Go to Step 25

23

Inspect for poor connections at the body control 
module (BCM). Refer to Testing for Intermittent 
Conditions and Poor Connections and Connector 
Repairs in Wiring Systems. 
Did you find and correct the condition?

Go to Step 33

Go to Step 29

24

Inspect for poor connections at the driver door 
module. Refer to Testing for Intermittent 
Conditions and Poor Connections and Connector 
Repairs in Wiring Systems. 
Did you find and correct the condition?

Go to Step 33

Go to Step 30

25

Inspect for poor connections at the passenger rear 
power window switch. Refer to Testing for 
Intermittent Conditions and Poor Connections 
and Connector Repairs in Wiring Systems. 
Did you find and correct the condition?

Go to Step 33

Go to Step 31

26

Inspect for poor connections at the passenger rear 
power window motor. Refer to Testing for 
Intermittent Conditions and Poor Connections 
and Connector Repairs in Wiring Systems. 
Did you find and correct the condition?

Go to Step 33

Go to Step 32

27

Repair the open or short to ground in the battery 
positive voltage circuit. Refer to Circuit Testing 
and Wiring Repairs in Wiring Systems. 
Did you complete the repair?

Go to Step 33

-

28

Repair the open in the rear power window switch 
ground circuit. Refer to Circuit Testing and 
Wiring Repairs in Wiring Systems. 
Did you complete the repair?

Go to Step 33

-

29

Replace the BCM. Refer to Body Control Module 
Replacement in Body Control System.Did you 
complete the repair?

IMPORTANT:

Perform the set up procedure for the BCM. Refer 
to Body Control Module (BCM) 
Programming/RPO Configuration in Body Control 
System.

Go to Step 33

-

30

IMPORTANT:

Perform the set up procedure for the driver door 
module. Refer to Service Programming System 
(SPS) in Programming.

 

2004 Hummer H2 

2004 ACCESSORIES & EQUIPMENT Doors - Hummer H2

  

DOOR AJAR INDICATOR MALFUNCTION 

Door Ajar Indicator Malfunction 

POWER DOOR LOCKS INOPERATIVE (FRONT DOOR(S)) 

Power Door Locks Inoperative (Front Door(s)) 

Replace the driver door module. Refer to Switch 
Replacement - Door Lock and Side Window - 
Driver .Did you complete the repair?

Go to Step 33

-

31

Replace the passenger rear power window switch. 
Refer to Power Window Switch Replacement - 
Rear Door . 
Did you complete the repair?

Go to Step 33

-

32

Replace the passenger rear power window motor. 
Refer to Window Regulator Motor Replacement -
Rear Door . 
Did you complete the repair?

Go to Step 33

-

33

Operate the system in order to verify the repair. 
Did you correct the condition?

System OK

Go to Step 2

Step

Action

Yes

No

Schematic Reference: Door Lock/Indicator Schematics 
Connector End View Reference:Power Door Systems Connector End Views

1

Did you perform the Door Systems Diagnostic 
System Check?

Go to Step 2

Go to Diagnostic 

System Check - 

Door Systems

2

Open and close the driver and passenger doors 
one at a time while monitoring the DIC display.
Do the door ajar indicators operate properly?

Go to Testing for 

Intermittent Conditions 

and Poor Connections in 

Wiring Systems

Go to Step 3

3

Do the courtesy lamps operate properly with 
the opening and closing of each of the doors?

Go to Step 4

Go to Courtesy 

Lamps Inoperative 

in Lighting Systems

4

Replace the instrument panel cluster. Refer to 
Instrument Panel Cluster (IPC) 
Replacement in Instrument Panel, Gauges and 
Console.Did you complete the replacement?

IMPORTANT:

Perform the setup procedure for the 
instrument panel cluster.

Go to Step 5

-

5

Operate the system in order to verify the repair.
Did you correct the condition?

System OK

Go to Step 3

Step

Action

Yes

No

 

2004 Hummer H2 

2004 ACCESSORIES & EQUIPMENT Doors - Hummer H2

  

Schematic Reference: Door Lock/Indicator Schematics 
Connector End View Reference: Power Door Systems Connector End Views

1

Did you perform the Door Systems Diagnostic 
System Check?

Go to Step 2

Go to Diagnostic 

System Check - 

Door Systems

2

Activate the door lock switches to the lock and 
unlock positions. 
Do the driver and front passenger doors lock and 
unlock?

Go to Testing for 

Intermittent Conditions 

and Poor Connections in 

Wiring Systems

Go to Step 3

3

Do the door lock switches lock and unlock at least 
one of the front door lock actuators?

Go to Step 4

Go to Step 9

4

1. Disconnect the inoperative door lock actuator. 

2. With a test lamp connected to a good ground, 

probe the door lock actuator lock circuit at the 
door lock actuator harness connector.  

3. Activate a door lock switch to lock position.  

Does the test lamp illuminate?

Go to Step 5

Go to Step 7

5

1. With a test lamp connected to a good ground, 

probe the door lock actuator unlock circuit at 
the door lock actuator harness connector.  

2. Activate a door lock switch to unlock position. 

Does the test lamp illuminate?

Go to Step 6

Go to Step 8

6

1. Connect a test lamp between the door lock 

actuator lock and unlock circuits at the door 
lock actuator harness connector.  

2. Activate a door lock switch to both the lock 

and unlock positions.  

Does the test lamp illuminate in both positions?

Go to Step 10

Go to Step 9

7

Test for an open or short to ground in the door lock 
actuator lock circuit. Refer to Circuit Testing and 
Wiring Repairs in Wiring Systems. 
Did you find and correct the condition?

Go to Step 13

Go to Step 9

8

Test for an open or short to ground in the door lock 
actuator unlock circuit. Refer to Circuit Testing and 
Wiring Repairs in Wiring Systems. 
Did you find and correct the condition?

Go to Step 13

Go to Step 9

9

Inspect for poor connections at the harness 
connector of the appropriate door module. Refer to 
Testing for Intermittent Conditions and Poor 
Connections and Connector Repairs in Wiring 
Systems. 

 

2004 Hummer H2 

2004 ACCESSORIES & EQUIPMENT Doors - Hummer H2