Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
Schematic Reference: Headlights Schematics | ||||
1 | Did you perform the Lighting Systems Diagnostic System Check? | -- | Go to Step 2 | |
2 |
Does the system operate normally? | -- | Go to Testing for Electrical Intermittents in Wiring Systems | Go to Step 3 |
3 |
Does the sensor voltage vary near the specified values? | Above 2.2 V- Below 1.3 V | Go to Step 4 | Go to Step 10 |
4 | Disconnect the headlamp relay. Are the headlamps illuminated? | -- | Go to Step 12 | Go to Step 5 |
5 |
Are the headlamps illuminated? | -- | Go to Step 6 | Go to Step 9 |
6 | Disconnect the BCM connector C2. Are the headlamps illuminated? | -- | Go to Step 7 | Go to Step 11 |
7 | Test the headlamp relay coil supply voltage circuit of the headlamp relay for a short to voltage. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 17 | Go to Step 8 |
8 | Inspect for poor connections at 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 17 | Go to Step 13 |
9 | Inspect for poor connections at the headlamp and panel dimmer 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 14 |
10 | Inspect for poor connections at 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 16 |
11 | Inspect for poor connections at 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 4 |
12 | Repair the short to voltage in the battery positive voltage circuit between the headlamp relay and the headlamps. Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | -- | Go to Step 17 | -- |
13 | Replace the headlamp relay. Did you complete the replacement? | -- | Go to Step 17 | -- |
14 | Replace the headlamp and panel dimmer switch. Refer to Headlamp Switch Replacement Did you complete the replacement? | -- | Go to Step 17 | -- |
15 | Replace the ambient light sensor. Refer to Ambient Light Sensor Replacement . Did you complete the replacement? | -- | Go to Step 17 | -- |
16 |
Important: Perform the setup procedure for the BCM. Replace the BCM. Refer to Body Control Module Replacement in Body Control System. 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 3 |
