Step | Action | Yes | No |
|---|---|---|---|
Schematic Reference: Headlights/Daytime Running Lights (DRL) Schematics Connector End View Reference: Lighting Systems Connector End Views DEFINITION: The low beam or high beam headlamps are always ON. | |||
1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Step 2 | |
2 | Place the headlamp switch in the OFF position. Are the headlamps OFF? | Go to Testing for Intermittent Conditions and Poor Connections | Go to Step 3 |
3 | Are the low beam headlamps illuminated? | Go to Step 4 | Go to Step 6 |
4 | Remove the lighting relay. Are the low beam headlamps illuminated? | Go to Step 8 | Go to Step 5 |
5 | Probe the coil side control circuit of the lighting relay with a test lamp that is connected to battery positive voltage. Does the test lamp illuminate? | Go to Step 9 | Go to Step 12 |
6 | Remove the lighting high low relay. Are the high beam headlamps illuminated? | Go to Step 10 | Go to Step 7 |
7 | Probe the coil side control circuit of the lighting high low relay with a test lamp that is connected to battery positive voltage. Does the test lamp illuminate? | Go to Step 11 | Go to Step 13 |
8 | Repair a short to ground in the low beam headlamps control circuit between the low beam headlamps and the lighting relay. Refer to Circuit Testing and Wiring Repairs . Did you complete the repair? | Go to Step 14 | -- |
9 | Repair a short to ground in the coil side control circuit of the lighting relay. Refer to Circuit Testing and Wiring Repairs . Did you complete the repair? | Go to Step 14 | -- |
10 | Repair a short to ground in the high beam headlamps control circuit between the high beam headlamps and the lighting high low relay. Refer to Circuit Testing and Wiring Repairs . Did you complete the repair? | Go to Step 14 | -- |
11 | Repair a short to ground in the coil side control circuit of the lighting high low relay. Refer to Circuit Testing and Wiring Repairs . Did you complete the repair? | Go to Step 14 | -- |
12 | Replace the lighting relay. Did you complete the replacement? | Go to Step 14 | -- |
13 | Replace the lighting high low relay. 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 |
