Hummer H2. Manual - part 176

2

2. Unlock the doors using the power 

door lock switch or the keyless 
entry transmitter.  

3. Remove the keys from the ignition. 

4. Open the driver's door.  

5. Observe the courtesy lamps.  

Do the courtesy lamps illuminate?or

Go to Step 3

Go to Courtesy Lamps 

Inoperative in Lighting 

Systems

3

1. Open the driver's window.  

2. Unlock the doors using the power 

door lock switch or the keyless 
entry transmitter.  

3. Remove the keys from the ignition. 

4. Open the driver's door.  

5. Observe the SECURITY telltale.  

Does the SECURITY telltale flash?or

Go to Step 4

Go to Security Indicator 

Inoperative

4

1. Lock the vehicle using the power 

door lock switches or the keyless 
entry transmitter.  

2. Observe the SECURITY telltale.  

Does the SECURITY telltale change 
from flashing to on steady?

Go to Step 5

Go to Power Door Locks 

Inoperative (Front Door(s)) 

or Power Door Locks 

Inoperative (Rear Door(s)) 

in Doors

5

1. Close all of the doors. 

2. Observe the SECURITY telltale.  

Does the SECURITY telltale turn off in 
about 15 seconds?

IMPORTANT:

Ensure that all the doors are 
closed. The content theft 
deterrent system will not arm 
itself without all of the doors 
being closed.

Go to Step 6

Go to Courtesy Lamps 

Always On in Lighting 

Systems

6

1. Reach in and manually unlock the 

driver's door.  

2. Open the driver's door.  

Do all of the alarm mode functions 

 

2004 Hummer H2 

2004 ACCESSORIES & EQUIPMENT Theft Deterrent - Hummer H2

  

CONTENT THEFT DETERRENT (CTD) DOES NOT DISARM WITH KEY LOCK 

Content Theft Deterrent (CTD) Does Not Disarm with Key Lock 

activate, parking lights flash and horn 
pulses?

Go to Step 7

Go to Step 8

7

Disarm the CTD system by inserting the 
door key into the driver or the passenger 
door lock cylinder and rotate the key to 
the unlock position. 
Do all of the alarm mode functions stop?

Go to Testing for 

Intermittent Conditions 

and Poor Connections 

in Wiring Systems

Go to Content Theft 

Deterrent (CTD) Does Not 

Disarm with Key Lock

8

Do any of the alarm functions activate?

Go to Step 9

Go to Courtesy Lamps 

Inoperative in Lighting 

Systems

9

Do the horns pulse only?

Go to Lights 

Inoperative in Content 

Theft Deterrent (CTD) 

Alarm Mode

Go to Horn Inoperative in 

Content Theft Deterrent 

(CTD) Alarm Mode

Step

Action

Value(s)

Yes

No

Schematic Reference:Theft Deterrent System Schematics 
Connector End View Reference:Theft Deterrent System Connector End Views 
DEFINITION: The CTD system does not disarm when the vehicle is unlocked with the key.

1

Did you perform the Theft Deterrent Diagnostic System 
Check?

-

Go to 

Step 2

Go to Diagnostic 

System Check - 

Theft Deterrent

2

1. Turn ON the ignition with the engine OFF.  

2. With a scan tool, observe the door key switch 

parameter in the Body Control Module (BCM) 
security data list.  

Does the scan tool display INACTIVE?

INACTIVE

Go to 

Step 3

Go to Step 11

3

1. Turn OFF the ignition.  

2. With a scan tool, observe the door key switch 

parameter in the BCM data list.  

3. Insert the ignition key into the drivers door lock 

cylinder.  

4. Turn and hold the door lock cylinder to the 

UNLOCK position.  

Does the scan tool display ACTIVE?

ACTIVE

Go to 

Step 6

Go to Step 4

1. Insert the ignition key into the passenger door 

lock cylinder.  

2. With a scan tool, observe the door key switch 

 

2004 Hummer H2 

2004 ACCESSORIES & EQUIPMENT Theft Deterrent - Hummer H2

  

4

parameter in the BCM data list.  

3. Turn and hold the door lock cylinder to the 

UNLOCK position.  

Does the scan tool display ACTIVE?

ACTIVE

Go to 

Step 9

Go to Step 5

5

1. Connect a 3 amp fused jumper wire between the 

signal circuit of the door key switch and ground.  

2. With a scan tool, observe the door key switch 

parameter in the BCM data list.  

Does the scan tool display ACTIVE?

ACTIVE

Go to 

Step 8

Go to Step 18

6

1. Insert the ignition key into the passenger door 

lock cylinder.  

2. With a scan tool, observe the door key switch 

parameter in the BCM data list.  

3. Turn and hold the door lock cylinder to the 

UNLOCK position.  

Does the scan tool display ACTIVE?

ACTIVE

System 

OK

Go to Step 7

7

1. Disconnect the RH door key switch connector.  

2. With a scan tool, observe the Door Key Switch 

parameter.  

3. Connect a 3 amp fused jumper wire between the 

signal circuit of the door key switch and ground.  

Does the scan tool display ACTIVE?

ACTIVE

Go to 

Step 8

Go to Step 20

8

1. Connect a 3 amp fused jumper wire between the 

signal circuit of the door key switch and the 
ground circuit at the RH door key switch 
connector.  

2. With the scan tool, observe the Door Key Switch 

parameter.  

Does the scan tool display ACTIVE?

ACTIVE

Go to 

Step 19

Go to Step 21

9

1. Disconnect the LH door key switch connector.  

2. With a scan tool, observe the Door Key Switch 

parameter.  

3. Connect a 3 amp fused jumper wire between the 

signal circuit of the door key switch and ground.  

Does the scan tool display the specified ACTIVE?

ACTIVE

Go to 

Step 10

Go to Step 15

1. Connect a 3 amp fused jumper wire between the 

 

2004 Hummer H2 

2004 ACCESSORIES & EQUIPMENT Theft Deterrent - Hummer H2

  

10

signal circuit of the door key switch and the 
ground circuit at the LH door key switch 
connector.  

2. With the scan tool, observe the Door Key Switch 

parameter.  

Does the scan tool display ACTIVE?

ACTIVE

Go to 

Step 17

Go to Step 16

11

1. With a scan tool observe the Door Key Switch 

parameter.  

2. Disconnect the BCM connector containing the 

circuits to the door key switch.  

Does the scan tool display INACTIVE?

INACTIVE

Go to 

Step 12

Go to Step 22

12

1. Reconnect the BCM connector.  

2. Disconnect the LH door key switch connector.  

3. With a scan tool observe the Door Key Switch 

parameter.  

Does the scan tool display INACTIVE?

INACTIVE

Go to 

Step 17

Go to Step 13

13

1. Disconnect the RH door key switch connector.  

2. With a scan tool observe the Door Key Switch 

parameter.  

Does the scan tool display INACTIVE?

INACTIVE

Go to 

Step 19

Go to Step 14

14

Repair the short to ground in the signal circuit of the 
door key switch between the BCM and either door 
latch. 
Did you complete the repair?

-

Go to 

Step 23

-

15

Repair the open in the signal circuit of the door key 
switch between the LH door latch and C200. 
Did you complete the repair?

-

Go to 

Step 23

-

16

Repair the open in the ground circuit of the door key 
switch between the LH door key switch connector and 
G203. 
Did you complete the repair?

-

Go to 

Step 23

-

17

Replace the LH door latch. Refer to Latch 
Replacement - Front Door in Doors. 
Did you complete the replacement?

-

Go to 

Step 23

-

18

Repair the open in the signal circuit of the door key 
switch between the BCM and C200. 
Did you complete the repair?

-

Go to 

Step 23

Go to Step 22

19

Replace the RH door latch. Refer to Latch 
Replacement - Front Door in Doors. 

-

Go to 

-

 

2004 Hummer H2 

2004 ACCESSORIES & EQUIPMENT Theft Deterrent - Hummer H2