Step | Action | Yes | No |
|---|---|---|---|
Schematic Reference: Headlights/Daytime Running Lights (DRL) Schematics | |||
1 | Did you perform the Lighting System Diagnostic System Check? | Go to Step 2 | |
2 |
Are the high beam headlamps operating properly? | Go to Testing for Intermittent Conditions and Poor Connections | Go to Step 3 |
3 | Is only one high beam headlamp inoperative? | Go to Step 7 | Go to Step 4 |
4 | Place the headlamp dimmer switch in the flash to pass position. Do the high beam headlamps operate in the flash to pass position? | Go to Step 13 | Go to Step 5 |
5 | Backprobe the headlamp dimmer switch high beam signal circuit of the underhood junction block connector with a test lamp that is connected to a good ground. Does the test lamp illuminate? | Go to Step 12 | Go to Step 6 |
6 | Test for a high resistance or an open in the high beam signal circuit of the headlamp dimmer switch. Refer to Circuit Testing and Wiring Repairs in Wiring Systems Has the repair been made? | Go to Step 14 | Go to Step 13 |
7 |
Does the test lamp illuminate? | Go to Step 8 | Go to Step 9 |
8 | Connect a test lamp between the ground circuit of the inoperative high beam headlamp and the battery positive voltage circuit of the inoperative high beam headlamp. Does the test lamp illuminate? | Go to Step 11 | Go to Step 10 |
9 | Test for a high resistance or an open in the battery positive voltage circuit of the inoperative headlamp. Refer to Circuit Testing and Wiring Repairs in Wiring Systems Did you find and correct the condition? | Go to Step 14 | Go to Step 12 |
10 | Test for a high resistance or an open in the ground circuit of the inoperative high beam headlamp. Refer to Circuit Testing and Wiring Repairs in Wiring Systems Has the repair been made? | Go to Step 14 | -- |
11 | Replace the inoperative headlamp. Refer to Headlamp Bulb Replacement Did you complete the repair? | Go to Step 14 | -- |
12 | Replace the underhood junction block. Refer to Underhood Electrical Center or Junction Block Replacement in Wiring Systems. Did you complete the repair? | Go to Step 14 | -- |
13 | Replace the headlamp dimmer switch. Refer to Multifunction, Turn Signal, and Hazard Switch Replacement - On Vehicle in Steering Wheel and Column - Tilt. Did you complete the repair? | Go to Step 14 | -- |
14 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 2 |
