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 | Are the high beam headlamps ON at all times when the low beams are ON? | Go to Step 4 | Go to Step 9 | ||||||
4 | Disconnect the body control module (BCM) connector C1 Are the high beam headlamps illuminated? | Go to Step 5 | Go to Step 6 | ||||||
5 | 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 20 | Go to Step 14 | ||||||
6 |
Are the high beam headlamp illuminated? | Go to Step 7 | Go to Step 16 | ||||||
7 | 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 20 | Go to Step 8 | ||||||
8 | 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 20 | Go to Step 16 | ||||||
9 | Disconnect the BCM connector C2. Are the low beam headlamps ON? | Go to Step 10 | Go to Step 11 | ||||||
10 | 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 20 | Go to Step 14 | ||||||
11 |
Are the low beam headlamps ON? | Go to Step 12 | Go to Step 15 | ||||||
12 | Test for the following in the headlamp switch OFF signal circuit:
Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition? | Go to Step 20 | Go to Step 13 | ||||||
13 | 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 20 | Go to Step 16 | ||||||
14 | Inspect for poor connections at the underhood fuse block . Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs . Did you find and correct the condition? | Go to Step 20 | Go to Step 17 | ||||||
15 | 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 20 | Go to Step 18 | ||||||
16 | 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 20 | Go to Step 19 | ||||||
17 | Replace the underhood fuse block. Refer to Underhood Electrical Center or Junction Block Bracket Replacement . Did you complete the replacement? | Go to Step 20 | -- | ||||||
18 | Replace the turn signal/multifunction switch. Refer to Turn Signal Multifunction Switch Replacement . Did you complete the replacement? | Go to Step 20 | -- | ||||||
19 | Replace the BCM. Refer to Control Module References for replacement, setup, and programming. Did you complete the repair? | Go to Step 20 | -- | ||||||
20 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 3 | ||||||
