For 1990-2009 cars

Step | Action | Yes | No
--- | --- | --- | ---
Schematic Reference: Exterior Lights Schematics
1 | Did you review the Lighting Systems Description and Operation and perform the necessary inspections? | Go to Step 2 | Go to Symptoms - Lighting Systems
2 | Verify that the turn signal lamps and indicators are inoperative. Do the turn signal lamps and the turn signal indicators flash? | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3
3 | Are only the turn signal indicators inoperative? | Go to Step 5 | Go to Step 4
4 | Is only one turn lamp inoperative? | Go to Step 10 | Go to Step 6
5 |

1. Leave the turn signal switch at the inoperative side.
2. Using a test lamp, backprobe the control circuit of the turn signal lamp indicator at the instrument panel cluster.

Does the test lamp flash?

Go to Step 9

Go to Step 8

6 |

1. Disconnect connector C201.
2. Using a test lamp connected to a good ground, probe the turn signal B+ feed circuit.
3. Turn the ignition switch to the RUN position.

Does the test lamp illuminate?

Go to Step 7

Go to Step 11

7 |

1. Using a test lamp, probe between the turn signal B+ feed circuit and the left turn signal switch.
2. Turn the ignition to the RUN position.

Does the test lamp flash ON and OFF?

Go to Step 13

Go to Step 12

8 | Repair the open or the high resistance in the inoperative turn signal lamp indicator power supply circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 14 | --
9 | Replace the instrument panel cluster. Refer to Instrument Cluster Replacement in Instrument Panel, Gauges, and Console. Did you complete the repair? | Go to Step 14 | --
10 | Repair the open or the high resistance in the inoperative turn signal lamp power supply or ground circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 14 | --
11 | Repair the open or the high resistance in the B+ turn signal feed circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 14 | --
12 | Replace the hazard flasher. Did you complete the replacement? | Go to Step 14 | --
13 | Replace the turn signal switch Did you complete the replacement? | Go to Step 14 | --
14 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 3