Schematic Reference: Exterior Lights Schematics

Connector End View Reference: Lighting Systems Connector End Views

Did you perform the Diagnostic System Check - Vehicle?

Go to Step 2

Go to Diagnostic System Check - Vehicle

Verify that the hazard lamps are always ON.

Do the hazard lamps operate normally?

Go to Testing for Intermittent Conditions and Poor Connections

Go to Step 3

1. Ensure that the hazard lamp switch is in the ON position.
2. With a scan tool, observe the Hazard Lamp Switch data parameter in the body control module (BCM) data list.

Does the scan tool display Inactive?

Go to Step 4

Go to Step 5

Test the hazard switch signal circuit and ground circuit for an open or high resistance. Refer to Circuit Testing and Wiring Repairs .

Did you find and correct a condition?

Go to Step 9

Go to Step 6

Inspect for poor connections at the harness connector of the BCM. Refer to Circuit Testing and Wiring Repairs .

Did you find and correct a condition?

Go to Step 9

Go to Step 7

Inspect for poor connections at the harness connector of the hazard switch. Refer to Circuit Testing and Wiring Repairs .

Did you find and correct a condition?

Go to Step 9

Go to Step 8

Replace the BCM. Refer to Control Module References for replacement, setup, and programming.

Did you complete the repair?

Go to Step 9

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Replace the hazard switch. Refer to Hazard Warning Switch Replacement .

Did you complete the repair?

Go to Step 9

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1. Use the scan tool in order to clear any induced DTCs.
2. Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 3