Step | Action | Yes | No |
|---|---|---|---|
Schematic Reference: Headlights/Daytime Running Lights (DRL) Schematics Connector End View Reference: Master Electrical Component List DEFINITION: The headlamps are always ON. | |||
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 | Are the high beam headlamps on at all times when the low beams are ON? | Go to Step 4 | Go to Step 11 |
4 | Remove the high beam relay. Do the high beam headlamps turn OFF? | Go to Step 5 | Go to Step 10 |
5 |
Are the high beam headlamps illuminate? | Go to Step 6 | Go to Step 7 |
6 | Test for a short to ground in the headlamp high beam relay control circuit. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition? | Go to Step 26 | Go to Step 18 |
7 |
Are the high beam headlamp illuminated? | Go to Step 8 | Go to Step 21 |
8 | Test for a short to ground in the flash to pass switch signal circuit. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition? | Go to Step 26 | Go to Step 9 |
9 | Test for a short to ground in the headlamp switch high beam signal circuit. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition? | Go to Step 26 | Go to Step 21 |
10 | Test for a short to battery positive voltage in the high beam headlamp solenoid switched voltage supply circuit. Refer to Circuit Testing and to Wiring Repairs . Did you find and correct the condition? | Go to Step 26 | Go to Step 19 |
11 | Remove the low beam relay. Do the low beam headlamps turn OFF? | Go to Step 12 | Go to Step 17 |
12 |
Are the low beam headlamps ON? | Go to Step 13 | Go to Step 14 |
13 | Test for a short to ground in the headlamp low beam relay control circuit. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition? | Go to Step 26 | Go to Step 18 |
14 |
Are the low beam headlamps ON? | Go to Step 15 | Go to Step 20 |
15 | Test for a short to battery positive voltage, poor connection, or an open in the headlamp switch OFF signal circuit. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition? | Go to Step 26 | Go to Step 16 |
16 | Test for a short to ground in the headlamp switch headlamps ON signal circuit. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition? | Go to Step 26 | Go to Step 21 |
17 | Test for a short to battery positive in low beam headlamp ballast switched voltage supply circuit. Refer to Circuit Testing and to Wiring Repairs . Did you find and correct the condition? | Go to Step 26 | Go to Step 19 |
18 | Inspect for poor connections at the relay. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs . Did you find and correct the condition? | Go to Step 26 | Go to Step 22 |
19 | Inspect for poor connections at the fuse block - underhood. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs . Did you find and correct the condition? | Go to Step 26 | Go to Step 23 |
20 | Inspect for poor connections at the turn signal/multifunction switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs . Did you find and correct the condition? | Go to Step 26 | Go to Step 24 |
21 | Inspect for poor connections at the BCM. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs . Did you find and correct the condition? | Go to Step 26 | Go to Step 25 |
22 | Replace the relay. Refer to Relay Replacement . Did you complete the replacement? | Go to Step 26 | -- |
23 | Replace the underhood electrical center. Refer to Underhood Electrical Center or Junction Block Replacement . Did you complete the replacement? | Go to Step 26 | -- |
24 | Replace the turn signal/multifunction switch. Refer to Turn Signal Multifunction Switch Replacement . Did you complete the replacement? | Go to Step 26 | -- |
25 | Replace the BCM. Refer to Control Module References for BCM replacement, setup, and programming. Did you complete the repair? | Go to Step 26 | -- |
26 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 3 |
