Step | Action | Values | Yes | No |
|---|---|---|---|---|
Schematic Reference: Headlights/Daytime Running Lights (DRL) Schematics Connector End View Reference: Master Electrical Component List in Wiring Systems | ||||
1 | Did you perform the Lighting System Diagnostic System Check? | -- | Go to Step 2 | |
2 |
Do the front turn signals illuminate? | -- | Go to Step 3 | |
3 |
Do the front turn signal lamps illuminate? | -- | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 4 |
4 | Are the automatic headlamps illuminated? | -- | Go to Step 5 | Go to Step 6 |
5 |
Does the scan tool indicate that the ambient light sensor input parameter is within the specified range? | 0.25-2.5 | Go to Step 13 | Go to Step 11 |
6 | Is the park brake indicator in the instrument panel cluster (IPC) ON? | -- | Go to Brake Warning Indicator Always On in Hydraulic Brakes | Go to Step 7 |
7 |
Does the scan tool indicate that the Lights On Chime Input parameter is ON? | -- | Go to Step 13 | Go to Step 8 |
8 |
Do the park lamps operate from the headlamp switch? | -- | Go to Step 9 | Go to Park Lamps Inoperative |
9 |
Does the test lamp illuminate? | -- | Go to Step 13 | Go to Step 10 |
10 | Test for an open or high resistance in the exterior lamps OFF circuit of the BCM. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 17 | Go to Step 12 |
11 | Inspect for poor connections at the harness connector of the ambient light sensor. 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 17 | Go to Step 14 |
12 | Inspect for poor connections at the harness connector of 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 17 | Go to Step 15 |
13 | Inspect for poor connections at the harness connector of the BCM. 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 17 | Go to Step 16 |
14 | Replace the ambient light sensor. Refer to Daytime Running Lamp (DRL) Ambient Light Sensor Replacement . Did you complete the replacement? | -- | Go to Step 17 | -- |
15 | Replace the headlamp switch. Refer to Headlamp Switch Replacement . Did you complete the replacement? | -- | Go to Step 17 | -- |
16 |
Important: Perform the set up procedures for the BCM. Refer to Body Control Module (BCM) Programming/RPO Configuration in Body Control System. Replace the BCM. Refer to Body Control Module Replacement in Body Control Systems. Did you complete the replacement? | -- | Go to Step 17 | -- |
17 | Operate the system in order to verify the repair. Did you correct the condition? | -- | System OK | Go to Step 2 |
