Step | Action | Yes | No |
|---|---|---|---|
Schematic Reference: Headlights/Daytime Running Lights (DRL) Schematics Connector End View Reference: Master Electrical Component List | |||
1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Step 2 | |
2 | Turn the headlamp switch to the OFF position. Do the low and high beam headlamps remain OFF? | Go to Testing for Intermittent Conditions and Poor Connections | Go to Step 3 |
3 | Remove the appropriate component either the headlamp module for low beams or HI BEAM relay for high beams. Do the lamps turn OFF? | Go to Step 5 | Go to Step 4 |
4 | Repair a short to battery positive voltage in the supply circuit of the affected headlamps. Refer to Wiring Repairs . Did you complete the repair? | Go to Step 13 | -- |
5 |
Do the headlamps turn OFF? | Go to Step 12 | Go to Step 6 |
6 | Are the high beam headlamps on at all times? | Go to Step 7 | Go to Step 8 |
7 | Test for a short to ground in FTP circuit and the headlamp dimmer switch high beam signal circuit. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition? | Go to Step 13 | Go to Step 9 |
8 | Test for a short to ground in the headlamp switch ON signal circuit. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition? | Go to Step 13 | Go to Step 9 |
9 | Disconnect the body control module (BCM) connector C1. Do the headlamps turn OFF? | Go to Step 14 | Go to Step 10 |
10 | Test for a short to ground in the affected low or high beam relay control circuit. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition? | Go to Step 14 | Go to Step 11 |
11 | Replace the appropriate headlamp module or HI BEAM relay. Refer to Relay Replacement . Did you complete the replacement? | Go to Step 14 | -- |
12 | Replace the lamp switch assembly. Refer to Headlamp Switch Replacement . Did you complete the replacement? | Go to Step 14 | -- |
13 | Replace the BCM. Refer to Control Module References for replacement, setup and programming. 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 |
