Step | Action | Yes | No |
|---|---|---|---|
Schematic Reference: Headlights Schematics | |||
1 | Did you perform the Lighting System Diagnostic System Check? | Go to Step 2 | |
2 | Operate the headlamps to verify the fault is present. Does the headlamp system operate normally? | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3 |
3 | While turning the headlamp switch ON and OFF, listen for an audible click from the headlamp relay. Does the headlamp relay click? | Go to Step 8 | Go to Step 4 |
4 |
Does the test lamp illuminate? | Go to Step 6 | Go to Step 5 |
5 |
Does the test lamp illuminate? | Go to Step 7 | Go to Step 12 |
6 | Connect a test lamp between the ground circuit of the headlamp relay and a battery positive voltage circuit. Does the test lamp illuminate? | Go to Step 11 | Go to Step 17 |
7 | Test the relay coil supply voltage circuit for an open or high resistance. Refer to Testing for a Short to Voltage and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 18 | Go to Step 10 |
8 | Connect a test lamp between the ground circuit of the headlamp dimmer switch and a battery positive voltage circuit. Does the test lamp illuminate? | Go to Step 9 | Go to Step 14 |
9 | Inspect for poor connections to the multifunction switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 18 | Go to Step 15 |
10 | Inspect for poor connections to the headlamp switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 18 | Go to Step 16 |
11 | Inspect for poor connections to the headlamp relay. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 18 | Go to Step 17 |
12 | Repair the open in the battery positive voltage circuit. Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 18 | -- |
13 | Repair the open or high resistance in the ground circuit. Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 18 | -- |
14 | Repair the open in the ground circuit. Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 18 | -- |
15 | 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 replacement? | Go to Step 18 | -- |
16 | Replace the headlamp switch. Refer to Headlamp Switch Replacement . Did you complete the replacement? | Go to Step 18 | -- |
17 | Replace the headlamp relay. Did you complete the replacement? | Go to Step 18 | -- |
18 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 2 |
