Hummer H3. Manual - part 1401

Replacement, Tail Lamp Bulb
Replacement, Instrument Cluster
Replacement (Left Hand Drive) or
Instrument Cluster Replacement
(Right Hand Drive) .

3. Turn ON the ignition, with the engine

OFF.

4. Connect a test lamp between the

ground circuit and the supply voltage
circuit of the inoperative bulb socket.

5. With a scan tool, command the

inoperative turn signal ON and OFF.

Does the test lamp illuminate?

Go to Step 4

Go to Step 5

Does the test lamp remain illuminated with
each command?

Go to Step 7

Go to Step 8

Test for a short to ground, open or high
resistance in the supply voltage circuit.
Refer to Circuit Testing and Wiring
Repairs .
Did you find and correct the condition?

Go to Step 15

Go to Step 6

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

Go to Step 15

Go to Step 11

Test the supply voltage circuit for a short to
voltage. Refer to Circuit Testing and
Wiring Repairs .
Did you find and correct the condition?

Go to Step 15

Go to Step 11

Does the condition only exist with the turn
signal indicator in the instrument panel
cluster (IPC)?

Go to Step 9

Go to Step 10

Inspect for poor connections at the IPC.
Refer to Circuit Testing and Wiring
Repairs .
Did you find and correct the condition?

Go to Step 15

Go to Step 12

Inspect for poor connections at the
inoperative bulb socket. Refer to Circuit

2007 Hummer H3

2007 ACCESSORIES & EQUIPMENT Lighting - H3

DTC B0530 (W/O RPO CW9)

Circuit Description

When the body control module (BCM) receives a right turn signal ON command from the turn
signal switch, the BCM will apply voltage to the right turn signal indicator supply voltage circuit.
The turn signal flasher, which is integrated within the BCM, will flash the right turn signal
indicator lamp in the instrument panel cluster (IPC) simultaneously with the turn signal lamps.

DTC Descriptor

This diagnostic procedure supports the following DTC:

Testing and Wiring Repairs .
Did you find and correct the condition?

Go to Step 15

Go to Step 13

Inspect for poor connections at the harness
connector of the body control module
(BCM). Refer to Circuit Testing and
Wiring Repairs .
Did you find and correct the condition?

Go to Step 15

Go to Step 14

Replace the IPC. Refer to Control
Module References for replacement, setup
and programming.
Did you complete the replacement?

Go to Step 15

Replace the inoperative bulb. Refer to
Daytime Running Lamp Bulb
Replacement or Tail Lamp Bulb
Replacement.
Did you complete the replacement?

Go to Step 15

Replace the BCM. Refer to Control
Module References for replacement, setup
and programming.
Did you complete the replacement?

Go to Step 15

1. Use the scan tool in order to clear the

DTCs.

2. Operate the vehicle within the

Conditions for Running the DTC as
specified in the supporting text.

Does the DTC reset?

Go to Step 2

System OK

2007 Hummer H3

2007 ACCESSORIES & EQUIPMENT Lighting - H3

DTC B0530 Right Turn Signal Circuit

Conditions for Running the DTC

The battery voltage must be between 9-16 volts.

Conditions for Setting the DTC

When the BCM receives a right turn signal command and the right turn signal indicator supply
voltage circuit is open, shorted to ground or shorted to voltage

Action Taken When the DTC Sets

The right turn signal indicator in the IPC will not operate or will remain always ON.

Conditions for Clearing the MIL/DTC

This DTC will clear on current status after the condition for setting the fault is corrected.

A history DTC will clear after 100 consecutive ignition cycles without a fault present.

History and current DTCs can be cleared using a scan tool.

Test Description

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

4: This step tests if battery positive voltage is constantly being applied to the supply voltage
circuit.

5: This step tests if a condition exists in the supply voltage circuit.

6: This step tests if a condition exists in the ground circuit.

10: After replacement of the IPC, you must calibrate the new cluster for proper operation.

11: After replacement of the BCM, you must calibrate the new module for proper
operation.

DTC B0530 (W/O RPO CW9)

Step

Action

Yes

Schematic Reference: Fog Lights Schematics
Connector End View Reference: Lighting Systems Connector End Views, Displays
and Gages Connector End Views or Data Communication Connector End Views

Did you perform the Diagnostic System
Check - Vehicle?

Go to
Diagnostic

2007 Hummer H3

2007 ACCESSORIES & EQUIPMENT Lighting - H3

Go to Step 2

System Check -
Vehicle

1. Turn ON the ignition, with the engine

OFF.

2. Activate the turn signals.

Do the exterior turn signals operate
correctly?

Go to Step 3

Go to
Symptoms -
Lighting
Systems

1. Turn OFF the ignition.

2. Remove the instrument panel cluster

(IPC). Refer to Instrument Cluster
Replacement (Left Hand Drive) or
Instrument Cluster Replacement
(Right Hand Drive) .

3. Turn ON the ignition, with the engine

OFF.

4. Connect a test lamp between the

ground circuit and the right turn
signal indicator supply voltage circuit
at the IPC connector.

5. Activate the inoperative turn signal

ON and OFF.

Does the test lamp illuminate?

Go to Step 4

Go to Step 5

Does the test lamp remain illuminated with
each command?

Go to Step 7

Go to Step 8

Test for a short to ground, open or high
resistance in the right turn signal indicator
supply voltage circuit. Refer to Circuit
Testing and Wiring Repairs .
Did you find and correct the condition?

Go to Step 12

Go to Step 6

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

Go to Step 12

Go to Step 9

Test the right turn signal indicator supply
voltage circuit for a short to voltage. Refer

2007 Hummer H3

2007 ACCESSORIES & EQUIPMENT Lighting - H3

Content .. 1399 1400 1401 1402 ..