For 1990-2009 cars

Step | Action | Yes | No
--- | --- | --- | ---
1 | Did you perform the Lighting System Diagnostic System Check? | Go to Step 2 | Go to Diagnostic System Check - Lighting Systems
2 | Place the headlamp dimmer switch in the flash to pass position. Do the high beam headlamps illuminate when the headlamp dimmer switch is in the flash to pass position? | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3
3 |

1. Disconnect connector C201.
2. Use a test lamp to probe between connector C201 terminal E10 and ground.

Does the test lamp illuminate?

Go to Step 4

Go to Step 5

4 |

1. Test for a open in circuit 2340 between connector C201 and the headlamp dimmer switch.
2. If the circuit is OK, replace the headlamp dimmer switch. Refer to Multifunction, Turn Signal, and Hazard Switch Replacement - On Vehicle in Steering Wheel Column - Tilt.

Did you find and correct the condition?

Go to Step 6

--

5 | Repair an open or a high resistance circuit 2340 between S215 and C201. Did you complete the repair? | Go to Step 6 | --
6 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 2