For 1990-2009 cars

Step | Action | Yes | No
--- | --- | --- | ---
1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Step 2 | Go to Diagnostic System Check - Vehicle
2 |

1. Turn ON the ignition, with the engine OFF.
2. Place the turn signal lever in the LEFT turn position.
3. Place the turn signal lever in the RIGHT turn position.

Do the appropriate turn signal lamps and/or indicators illuminate for each action?

Go to Testing for Intermittent Conditions and Poor Connections

Go to Step 3

3 | Is only one turn signal lamp inoperative? | Go to Step 6 | Go to Step 4
4 | Is only one of the turn signal indicators inoperative? | Go to Step 5 | Go to Step 7
5 | Place the turn signal lever in the position of the inoperative indicator. Does the test lamp illuminate and flash. | Go to Step 10 | Go to Step 13
6 |

1. Disconnect the inoperative turn signal lamp.
2. Probe the turn signal supply voltage circuit of the inoperative lamp with a test lamp that is connected to a good ground.
3. Place the turn signal lever in the position of the inoperative lamp.

Does the test lamp illuminate and flash?

Go to Step 14

Go to Step 15

7 | Do the hazard lamps operate properly? | Go to Step 8 | Go to Step 6
8 |

1. Disconnect the turn/hazard-headlamp switch.
2. Probe the turn signal flasher signal circuit with a test lamp that is connected to a good ground.

Does the test lamp illuminate and flash?

Go to Step 11

Go to Step 9

9 | Test the turn signal/flasher signal circuit for an open, high resistance, or short to ground. Did you find and correct the condition? | Go to Step 19 | Go to Step 12
10 | Inspect for poor connections at the harness connector of the IPC. Did you find and correct the condition? | Go to Step 19 | Go to Step 16
11 | Inspect for poor connections at the harness connector of the turn/hazard-headlamp switch. Did you find and correct the condition? | Go to Step 19 | Go to Step 17
12 | Inspect for poor connections at the harness connector of the turn/hazard-flasher. Did you find and correct the condition? | Go to Step 19 | Go to Step 18
13 | Repair an open, high resistance, or short to ground in the inoperative turn signal supply voltage circuit. Did you complete the repair? | Go to Step 19 | --
14 | Repair an open or high resistance in the ground circuit of the inoperative lamp. Did you complete the repair? | Go to Step 19 | --
15 | Repair an open, high resistance, or short to ground in the inoperative turn signal supply voltage circuit. Did you complete the repair? | Go to Step 19 | --
16 | Replace the IPC. Refer to Instrument Cluster Replacement . Did you complete the replacement? | Go to Step 19 | --
17 | Replace the turn/hazard-headlamp switch. Did you complete the replacement? | Go to Step 19 | --
18 | Replace the turn/hazard-flasher. Did you complete the replacement? | Go to Step 19 | --
19 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 3