Hummer H2. Manual - part 375

 

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Hummer H2. Manual - part 375

 

 

6

1. Turn OFF the ignition.  

2. Disconnect the DIC switch connector.  

3. Connect a 3-amp fused jumper wire 

between the signal circuit of the suspect 
DIC switch and a good ground. Refer to 
Circuit Testing in Wiring Systems.  

4. Turn ON the ignition, with the engine 

OFF.  

5. With a scan tool, observe the suspect DIC 

Switch parameter.  

Does the scan tool display ON for the suspect 
switch?

Go to Step 10

Go to Step 8

7

Test the signal circuit of the suspect DIC switch 
for a short to ground. Refer to Circuit Testing 
and Wiring Repairs in Wiring Systems. 
Did you find and correct the condition?

Go to Step 14

Go to Step 11

8

Test the signal circuit of the suspect DIC switch 
for an open or high resistance. Refer to Circuit 
Testing and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?

Go to Step 14

Go to Step 11

9

Test the ground circuit of the DIC switch for an 
open or high resistance. Refer to Circuit Testing
and Wiring Repairs in Wiring Systems. 
Did you find and correct the condition?

Go to Step 14

Go to Step 10

10

Inspect for poor connections at the harness 
connector of the DIC 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 14

Go to Step 12

11

Inspect for poor connections at the harness 
connector of the IPC. 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 14

Go to Step 13

12

Replace the DIC switch. Refer to Steering 
Wheel Control Switch Assembly Replacement 
in Steering Wheel and Column. 
Did you complete the replacement?

Go to Step 14

-

13

Replace the IPC. Refer to Instrument Panel 
Cluster (IPC) Replacement . 
Did you complete the replacement?

Go to Step 14

-

Operate the system in order to verify the repair. 

 

2004 Hummer H2 

2004 ACCESSORIES & EQUIPMENT Instrument Panel, Gauges, and Console - Hummer H2

  

CHIME ALWAYS ON 

Chime Always On 

14 Did you correct the condition?

System OK

Go to Step 2

Step

Action

Yes

No

Schematic Reference:Audible Warnings Schematics

1

Did you perform the Audible Warnings Diagnostic 
System Check?

Go to Step 2

Go to Diagnostic System 

Check - Audible 

Warnings

2

Do any indicators illuminate when the chime 
sounds?

Go to Symptoms - 

Instrument Panel, 

Gauges and 

Console

Go to Step 3

3

1. Turn the ignition OFF.  

2. Remove the key from the ignition.  

3. Turn the headlamp switch to OFF.  

4. Close all of the vehicles doors.  

5. Open one or more of the vehicles doors  

Does the chime sound at all times regardless if the 
doors are open or closed?

Go to Step 16

Go to Step 4

4

1. Close all of the vehicles doors.  

2. With a scan tool observe the Driver Door 

Ajar Switch and the Passenger Door Ajar 
Switch parameters in the BCM inputs data 
list or the Door Ajar Switch parameters in 
the DDM/PDM inputs data list.  

Do all of the Door Ajar Switch parameters display 
Off or Inactive?

Go to Step 5

Go to Courtesy Lamps 

Always On in Lighting 

Systems

5

With a scan tool observe the Left Rear Cargo Door 
Ajar Switch and the Right Rear Door Ajar Switch 
parameters in the BCM inputs data list. 
Do all of the Door Switch parameters display 
Inactive?

Go to Step 6

Go to Courtesy Lamps 

Always On in Lighting 

Systems

6

With a scan tool, observe the Cargo Door Ajar 
Switch and the Hood Ajar Switch parameters in the 
BCM inputs data list. 
Does the Cargo Door Ajar Switch and the Hood 
Ajar Switch parameters display Inactive?

Go to Step 7

Go to Courtesy Lamps 

Always On in Lighting 

Systems

1. Turn the ignition OFF.  

2. Remove the key from the ignition.  

 

2004 Hummer H2 

2004 ACCESSORIES & EQUIPMENT Instrument Panel, Gauges, and Console - Hummer H2

  

7

3. Turn the headlamp switch to OFF.  

4. Open the drivers door.  

Does the chime sound?

Go to Step 8

Go to Testing for 

Intermittent Conditions 

and Poor Connections in 

Wiring Systems

8

1. Install a scan tool.  

2. Turn the ignition ON, with the engine OFF.  

3. With a scan tool, observe the Parklamp 

Switch parameter in the BCM inputs data 
list.  

Does the Parklamp Switch parameter display 
inactive?

Go to Step 9

Go to Step 11

9

With a scan tool, observe the Headlamp Switch 
parameter in the BCM inputs data list. 
Does the Headlamp Switch parameter display 
Inactive?

Go to Step 10

Go to Step 11

10

1. Turn the ignition OFF.  

2. Remove the key from the ignition.  

3. With a scan tool, observe the Key In Ignition 

parameter in the BCM inputs data list.  

Does the Key In Ignition parameter display No?

Go to Step 15

Go to Step 12

11

Test the headlamp input signal circuit and the park 
lamp signal circuit at the BCM for a short to 
voltage. Refer to Circuit Testing and Wiring 
Repairs in Wiring Systems. 
Did you find and correct the condition?

Go to Step 21

Go to Step 13

12

Test the key in ignition signal circuit for a short to 
ground. Refer to Circuit Testing and Wiring 
Repairs in Wiring Systems. 
Did you find and correct the condition?

Go to Step 21

Go to Step 14

13

Inspect for poor connections at the harness 
connector of the headlamp 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 21

Go to Step 17

14

Inspect for poor connections at the harness 
connector of the ignition key alarm 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 21

Go to Step 18

Inspect for poor connections at the harness 

 

2004 Hummer H2 

2004 ACCESSORIES & EQUIPMENT Instrument Panel, Gauges, and Console - Hummer H2

  

CHIME INOPERATIVE 

Chime Inoperative 

15

connector of the 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 21

Go to Step 19

16

Inspect for poor connections at the harness 
connector of the radio or audio amplifier. 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 21

Go to Step 20

17

Replace the headlamp switch. Refer to Headlamp 
Switch Replacement in Lighting Systems. 
Did you complete the replacement?

Go to Step 21

-

18

Replace the ignition switch. Refer to Ignition 
Switch Replacement in Steering Wheel and 
Column. 
Did you complete the replacement?

Go to Step 21

-

19

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

IMPORTANT:

Program the replacement BCM.

Go to Step 21

-

20

Replace the radio. Refer to Radio Replacement 
orAmplifier Replacement in Entertainment.Did 
you complete the replacement?

IMPORTANT:

Program the replacement radio or audio 
amplifier.

Go to Step 21

-

21

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

System OK

Go to Step 3

Step

Action

Yes

No

Schematic Reference:Audible Warnings Schematics 
DEFINITION: One or more chime functions are inoperative.

1

Did you perform the Audible Warning 
Diagnostic System Check?

Go to Step 2

Go to Diagnostic 

System Check - 

Audible Warnings

1. Turn the ignition OFF, with the key 

in the ignition.  

Go to Testing for 

 

2004 Hummer H2 

2004 ACCESSORIES & EQUIPMENT Instrument Panel, Gauges, and Console - Hummer H2

  

 

 

 

 

 

 

 

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