Step  | Action  | Yes  | No  | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1  | Did you perform the Diagnostic System Check - Vehicle?  | Go to Step 2  | Go to Diagnostic System Check - Vehicle in Vehicle DTC Information  | ||||||||||||||
2  | Verify that the headlamps are inoperative in low light conditions. Do the headlamps operate normally?  | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems  | Go to Step 3  | ||||||||||||||
3  | Turn the headlamp switch to the HEAD position. Do the headlamps operate normally?  | Go to Step 4  | |||||||||||||||
4  | Use the scan tool to inspect for the following related body control module (BCM) Data/Input Parameters and Output Controls. Refer to Scan Tool Data List for typical values and definitions: 
 
 
 
 
 
 
 Did you find and correct a problem?  | Go to Step 5  | --  | ||||||||||||||
5  | Operate the system in order to verify the repair. Did you correct the condition?  | System OK  | Go to Step 3  |