Hummer H2. Manual - part 2215

Conditions for Setting the DTC 

Air Suspension Module senses inlet valve voltage does not agree with command state. 

Action Taken When the DTC Sets 

z

Air Suspension functionality is suspended.  

z

SERVICE AIR SUSPENSION message is displayed.  

Conditions for Clearing the DTC 

The DTC will clear when the condition for setting the DTC is removed. 

Diagnostic Aids 

This DTC is set when the inlet valve circuitry is shorted to ground, voltage and open. 

Test Description 

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

2: During the Left Air Solenoid operation, listen for an audible click. Command the ON and the OFF 
states. Repeat the commands as necessary.  

3: Verifies that the Air Suspension Module is providing voltage to the Left Air Solenoid.  

4: Tests for an open in the ground circuit to the Left Air Solenoid.  

5: Tests for constant voltage to the Left Air Solenoid.  

DTC C0716 

Step

Action

Yes

No

Schematic Reference: Suspension Controls Schematics

1

Did you perform the Air Suspension Diagnostic System 
Check?

Go to Step 2

Go to Diagnostic 

System Check - Air 

Suspension

2

1. Install a scan tool.  

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

3. With a scan tool, command the Left Air Solenoid ON 

and OFF.  

Does the air solenoid turn ON and OFF with each command?

Go to 

Diagnostic 

Aids

Go to Step 3

1. Turn OFF the ignition.  

2. Disconnect the Air Suspension Inlet Valve.  

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

4. Connect a test lamp to ground. 

 

2004 Hummer H2 

2004 SUSPENSION Air Suspension - Hummer H2

  

3

Probe the control circuit of the inlet valve with a test 
lamp that is connected to ground. 

5. With a scan tool, command the Left Air Solenoid ON 

and OFF.  

Does the test lamp turn ON and OFF with each command?

Go to Step 4

Go to Step 5

4

1. Connect a test lamp between the control circuit of the 

inlet valve and the ground circuit of the inlet valve.  

2. With a scan tool, command the Left Air Solenoid ON 

and OFF.  

Does the test lamp turn ON and OFF with each command?

Go to Step 8

Go to Step 10

5

Does the test lamp remain illuminated with each command?

Go to Step 7

Go to Step 6

6

Test the control circuit of the inlet valve for a short to ground 
or an open. Refer to Circuit Testing and to Wiring Repairs in 
Wiring Systems. 
Did you find and correct the condition?

Go to Step 

13

Go to Step 9

7

Test the control circuit of the inlet valve for a short to voltage. 
Refer to Circuit Testing and to Wiring Repairs in Wiring 
Systems. 
Did you find and correct the condition?

Go to Step 

13

Go to Step 9

8

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

Go to Step 

13

Go to Step 11

9

Inspect for poor connections at the harness connector of the 
Air Suspension Module. Refer to Testing for Intermittent 
Conditions and Poor Connections and to Wiring Repairs in 
Wiring Systems. 
Did you find and correct the condition?

Go to Step 

13

Go to Step 12

10

Repair the ground circuit of the inlet valve. Refer to Wiring 
Repairs in Wiring Systems. 
Did you complete the repair?

Go to Step 

13

-

11

Replace the Air Suspension Inlet Valve. Refer to Valve 
Automatic Level Control Solenoid Replacement . 
Did you complete the replacement?

Go to Step 

13

-

12

1. Replace the Air Suspension Module. Refer to Module 

Assembly Electronic Suspension Control 
Replacement .  

IMPORTANT:

Always perform the check trim height procedure after Air 
Suspension Module replacement.

-

 

2004 Hummer H2 

2004 SUSPENSION Air Suspension - Hummer H2

  

DTC C0717 

Circuit Description 

The Air Suspension Inlet Valve - RR is controlled by the Air Suspension Module. The Air Suspension Module 
provides a switched path to voltage whenever inlet valve activity is required. The Air Suspension Module 
monitors the inlet valve circuity to determine if the voltage level agrees with the command state. 

Conditions for Running the DTC 

Ignition on. 

Conditions for Setting the DTC 

Air Suspension Module senses inlet valve voltage does not agree with command state. 

Action Taken When the DTC Sets 

z

Air Suspension functionality is suspended.  

z

SERVICE AIR SUSPENSION message is displayed.  

Conditions for Clearing the DTC 

The DTC will clear when the condition for setting the DTC is removed. 

Diagnostic Aids 

This DTC is set when the inlet valve circuitry is shorted to ground, voltage and open. 

Test Description 

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

2: During the Right Air Solenoid operation, listen for an audible click. Command the ON and the OFF 
states. Repeat the commands as necessary. 

2. Perform the trim height calibration procedure for the Air 

Suspension Module if necessary after check trim height 
procedure.  

Did you complete the replacement?

Go to Step 

13

13

1. Use the scan tool in order to clear the DTCs.  

2. Operate the vehicle within the Conditions for Running 

the DTC.  

Does the DTC reset?

Go to Step 2

System OK

 

2004 Hummer H2 

2004 SUSPENSION Air Suspension - Hummer H2

  

3: Verifies that the Air Suspension Module is providing voltage to the Right Air Solenoid.  

4: Tests for an open in the ground circuit to the Right Air Solenoid.  

5: Tests for constant voltage to the Right Air Solenoid.  

DTC C0717 

Step

Action

Yes

No

Schematic Reference: Suspension Controls Schematics

1

Did you perform the Air Suspension Diagnostic System 
Check?

Go to Step 2

Go to Diagnostic 

System Check - Air 

Suspension

2

1. Install a scan tool.  

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

3. With a scan tool, command the Right Air Solenoid ON 

and OFF.  

Does the air solenoid turn ON and OFF with each command?

Go to 

Diagnostic 

Aids

Go to Step 3

3

1. Turn OFF the ignition.  

2. Disconnect the Air Suspension Inlet Valve.  

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

4. Connect a test lamp to ground. 

Probe the control circuit of the inlet valve with a test 
lamp that is connected to ground. 

5. With a scan tool, command the Right Air Solenoid ON 

and OFF.  

Does the test lamp turn ON and OFF with each command?

Go to Step 4

Go to Step 5

4

1. Connect a test lamp between the control circuit of the 

inlet valve and the ground circuit of the inlet valve.  

2. With a scan tool, command the Right Air Solenoid ON 

and OFF.  

Does the test lamp turn ON and OFF with each command?

Go to Step 8

Go to Step 10

5

Does the test lamp remain illuminated with each command?

Go to Step 7

Go to Step 6

6

Test the control circuit of the inlet valve for a short to ground 
or an open. Refer to Circuit Testing and to Wiring Repairs in 
Wiring Systems. 
Did you find and correct the condition?

Go to Step 

13

Go to Step 9

7

Test the control circuit of the inlet valve for a short to voltage. 
Refer to Circuit Testing and to Wiring Repairs in Wiring 
Systems. 

Go to Step 

 

2004 Hummer H2 

2004 SUSPENSION Air Suspension - Hummer H2