Hummer H2. Manual - part 645

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

  

POWER DOOR LOCKS INOPERATIVE (REAR DOOR(S)) 

Power Door Locks Inoperative (Rear Door(s)) 

Did you find and correct the condition?

Go to Step 13

Go to Step 11

10

Inspect for poor connections at the harness 
connector of the door lock actuator. 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 13

Go to Step 12

11

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

IMPORTANT:

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

Go to Step 13

-

12

Replace the appropriate door lock actuator. Refer to 
Latch Replacement - Front Door . 
Did you complete the repair?

Go to Step 13

-

13

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

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

Go to Testing for 

Intermittent Conditions 

and Poor Connections in 

Wiring Systems

Go to Step 3

3

Is there only one door lock actuator that is 
inoperative?

Go to Power Door Locks 

Inoperative - One Door 

or Switch

Go to Step 4

4

Are the rear door lock actuators inoperative for 
both lock and unlock?

Go to Step 6

Go to Step 5

5

Do the rear door lock actuators lock?

Go to Step 17

Go to Step 12

6

Is the LOCKS fuse open?

Go to Step 24

Go to Step 7

1. Remove the door unlock relay.  

 

2004 Hummer H2 

2004 ACCESSORIES & EQUIPMENT Doors - Hummer H2