Hazard Lamps Always On
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2004 Oldsmobile Bravada, 2004 GMC Envoy XUV, 2004 GMC Envoy XL, 2004 GMC Envoy, and 2004 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
Hazard Lamps Always On Diagnostic Test
| Step | Action | Yes | No |
|---|---|---|---|
| Schematic Reference: Exterior Lights Schematics Connector End View Reference: Lighting Systems Connector End Views |
|||
| 1 | Did you review the Exterior Lighting Systems Description and Operation and perform the necessary inspections? | Go to Step 2 | Go to Exterior Lighting Systems Description and Operation |
| 2 | Verify that the hazard lamps are always on. Do the hazard lamps operate normally? |
Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3 |
| 3 |
|
Go to Step 4 | Go to Step 5 |
| 4 | Test the multifunction turn signal switch hazard switch signal circuit for a short to ground. Refer to Circuit Testing
and Wiring Repairs
in Wiring Systems. Did you find and correct a condition? |
Go to Step 9 | Go to Step 6 |
| 5 | Inspect for poor connections at the harness connector of the hazard/turn flasher. Refer to Circuit Testing
and Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
Go to Step 9 | Go to Step 7 |
| 6 | Inspect for poor connections at the harness connector of the multifunction turn signal switch. Refer to Circuit Testing
and Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
Go to Step 9 | Go to Step 8 |
| 7 | Replace the hazard/turn flasher. Refer to Hazard and Turn Signal Flasher Replacement . Did you complete the repair? |
Go to Step 9 | - |
| 8 | Replace the multifunction turn signal switch. Refer to Multifunction, Turn Signal Switch Replacement
in Steering Wheel and Column. Did you complete the repair? |
Go to Step 9 | - |
| 9 | Operate the system in order to verify the repair. Did you correct the condition? |
System OK | Go to Step 3 |