Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 | Did you perform the Lighting System Diagnostic System Check? | -- | Go to Step 2 | |
2 |
Does the test lamp illuminate? | -- | Go to Step 3 | Go to Step 6 |
3 |
Does the resistance vary within the specified range? | 3.5K ohms-200K ohms | Go to Step 4 | Go to Step 7 |
4 |
Is the resistance greater than the specified value? | 31K ohms | Go to Step 5 | Go to Step 8 |
5 | Expose the ambient light sensor to a bright incandescent light. Is the resistance less than the specified value? | 23K ohms | Go to Step 14 | Go to Step 8 |
6 | Repair the open or short to ground in the ignition positive voltage input circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair? | -- | Go to Step 16 | -- |
7 | Test the twilight enable input circuit for high resistance, short, or open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 16 | Go to Step 10 |
8 | Test the ambient light sensor input circuit for a open or high resistance. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 16 | Go to Step 9 |
9 | Test the ambient light sensor ground circuit for a open or high resistance. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 16 | Go to Step 12 |
10 | Inspect for poor connections at the headlamp switch connector. 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 16 | Go to Step 11 |
11 | Replace the headlamp switch. Refer to Headlamp Switch Replacement . Did you complete the replacement? | -- | Go to Step 16 | -- |
12 | Inspect for poor connections at the ambient light sensor connector. 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 16 | Go to Step 13 |
13 | Replace the ambient light sensor. Refer to Ambient Light Sensor Replacement . Did you complete the replacement? | -- | Go to Step 16 | -- |
14 | Inspect for poor connections at the LCM connector. 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 16 | -- |
15 | Replace the LCM. Refer to Lamp Control Module Replacement . Did you complete the replacement? | -- | Go to Step 16 | -- |
16 | Operate the system in order to verify the repair. Did you find and correct the condition? | -- | System OK | Go to Step 2 |
