For 1990-2009 cars

Step | Action | Yes | No
--- | --- | --- | ---
Schematic Reference: Exterior Lights Schematics
1 | Were you sent here from the Exterior Lights System Check? | Go to Step 2 | Go to Symptoms - Lighting Systems
2 | Verify that the hazard lamps are inoperative. Does the system operate normally? | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3
3 |

1. Turn the ignition switch to the ON position.
2. Using a test lamp, check the hazard switch cavity 6 to ground.

Does the test lamp illuminate?

Go to Step 4

Go to Step 5

4 |

1. Turn the hazard switch to the ON position.
2. Using a test lamp, check the hazard switch cavity 5 to ground.

Does the test lamp illuminate?

Go to Step 12

Go to Step 13

5 | Using a test lamp, check the fuse and relay block 1, C5 cavity 3 to ground. Does the test lamp illuminate? | Go to Step 7 | Go to Step 6
6 | Check the HAZARD fuse, located in fuse and relay block 1. Does an open exist in the 10 A HAZARD fuse? | Go to Step 8 | Go to Step 11
7 | Repair the open in the battery positive voltage circuit between the relay block 1, C5 cavity 3 and hazard switch cavity 6. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | Go to Step 23 | --
8 |

1. Disconnect fuse and relay block 1 connector C 5.
2. Place the hazard switch in the off position.
3. Test cavity 3 of connector C5 for high resistance to ground.

Is there high resistance to ground in the battery positive voltage circuit?

Go to Step 10

Go to Step 9

9 | Replace the 10 A hazard fuse. Is the repair complete? | Go to Step 23 | --
10 | Repair the short to ground condition between fuse and relay block 1 connector C 5 cavity 3 and ground. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | Go to Step 23 | --
11 | Replace the fuse and relay block 1. Refer to Underhood Electrical Center or Junction Block Replacement in Wiring Systems. Is the repair complete? | Go to Step 23 | --
12 | Using a test lamp, check junction block 1 turn/hazard flasher cavity 2 to ground. Does the test lamp illuminate? | Go to Step 14 | Go to Step 15
13 | Replace the hazard switch. Refer to Hazard and Turn Signal Flasher Replacement in Instrument Panel, Gages, and Console. Is the repair complete? | Go to Step 23 | --
14 | Using a test lamp, check junction block 1 turn/hazard flasher cavity 3 to ground. Does the test lamp illuminate? | Go to Step 16 | Go to Step 17
15 | Repair the open in the flasher feed circuit between the junction block 1 turn/hazard flasher cavity 2 and fuse and relay block 1, C5 cavity 3. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | Go to Step 23 | --
16 | Using a test lamp, check junction block 1, C4 cavity 1 to ground. Does the test lamp illuminate? | Go to Step 18 | Go to Step 19
17 | Replace the turn/hazard flasher on junction block 1. Is the repair complete? | Go to Step 23 | --
18 | Using a test lamp, check the hazard switch cavity 4 to ground. Does the test lamp illuminate? | Go to Step 13 | Go to Step 20
19 | Using a test lamp, check the junction block 1, C6 cavity 5 to ground. Does the test lamp illuminate? | Go to Step 21 | Go to Step 22
20 | Repair the open in the GRN/WHT wire between the hazard switch cavity 4 and the junction block 1, C4 cavity 1. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | Go to Step 23 | --
21 | Replace the junction block 1. Is the repair complete? | Go to Step 23 | --
22 | Repair the open in the GRN/WHT wire between the junction block 1 turn/hazard flasher cavity 3 and the junction block 1, C4 cavity 1. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | Go to Step 23 | --
23 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 3