For 1990-2009 cars

Step | Action | Yes | No
--- | --- | --- | ---
Schematic Reference: Exterior Lights Schematics
1 | Did you perform the Lighting System Diagnostic System Check? | Go to Step 2 | Go to Diagnostic System Check - Lighting Systems
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 in Wiring Systems

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 |

1. Turn OFF the ignition.
2. Disconnect the instrument panel cluster (IPC). Refer to in Instrument Panel, Gages, and Console.
3. Turn ON the ignition, with the engine OFF.
4. Probe the inoperative turn signal supply voltage circuit of the IPC with a test lamp that is connected to a good ground.
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 14

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 15

Go to Step 16

7 | Do the hazard lamps operate properly? | Go to Step 8 | Go to Hazard Lamps Inoperative in Symptoms
8 |

1. Disconnect the turn/headlamp/wiper 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 12

Go to Step 9

9 | Test the turn signal flasher signal circuit for an open, high resistance, or short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 20 | Go to Step 13
10 | Inspect the bulb of the inoperative turn signal indicator. Replace if necessary. Refer to Instrument Cluster Indicator Lamp Replacement in Instrument Panel, Gages and Console. Did you find and correct the condition? | Go to Step 20 | Go to Step 11
11 | Inspect for poor connections at the harness connector of the IPC. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 20 | Go to Step 17
12 | Inspect for poor connections at the harness connector of the turn/headlamp/wiper switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 20 | Go to Step 18
13 | Inspect for poor connections at the harness connector of the hazard switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 20 | Go to Step 19
14 | Repair an open, high resistance, or short to ground in the inoperative turn signal supply voltage circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 20 | --
15 | Repair an open or high resistance in the ground circuit of the inoperative lamp. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 20 | --
16 | Repair an open, high resistance, or short to ground in the inoperative turn signal supply voltage circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 20 | --
17 | Replace the IPC. Refer to Instrument Cluster Replacement in Instrument Panel, Gages, and Console. Did you complete the replacement? | Go to Step 20 | --
18 | Replace the turn/headlamp/wiper switch. Refer to Multifunction Turn Signal Lever Replacement - On Vehicle in Steering Wheel and Column. Did you complete the replacement? | Go to Step 20 | --
19 | Replace the hazard switch. Refer to Hazard Warning Switch Replacement . Did you complete the replacement? | Go to Step 20 | --
20 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 3