For 1990-2009 cars

Step | Action | Value(s) | Yes | No
--- | --- | --- | --- | ---
Important: A short to ground will cause an open fuse(s). Before performing this diagnostic procedure, inspect the fuse(s) for an open.
1 | Did you perform the Lighting Systems Diagnostic System Check? | -- | Go to Step 2 | Go to Diagnostic System Check - Lighting Systems
2 |

1. Disconnect the hazard switch connector.
2. Connect a test lamp between terminal B of the hazard switch connector and ground.

Does the test lamp light?

--

Go to Step 3

Go to Step 4

3 | Connect a test lamp between terminal B and terminal A of the hazard switch connector. Does the test lamp light? | -- | Go to Step 5 | Go to Step 6
4 | Backprobe the left IP junction block connector C1 with a test lamp between terminal C12 and ground. Does the test lamp light? | -- | Go to Step 7 | Go to Step 8
5 | Replace the hazard switch. Is the repair complete? | -- | System OK | --
6 | Repair the open in the Hazard Switch Ground circuit between the hazard switch and ground splice pack G201. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | System OK | --
7 | Repair the open in the Hazard Switch Fuse Output-battery circuit between the hazard switch and the left IP junction block. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | System OK | --
8 | Replace the left IP junction block. Is the repair complete? | -- | System OK | --