Scan Tool Testing and Procedures

HID Headlamps

Headlamp Range/Cornering Lamp Control Module (J745) Output Diagnostic Test Mode

Special tools, testers and auxiliary items required

• Vehicle Diagnosis, Testing and Information System (VAS 5051B)

The following components and functions can be checked via output Diagnostic Test Mode (DTM) of Comfort System Central Control Module (J393):

• Left Headlamp Beam Adjustment Motor (V48) and Right Headlamp Beam Adjustment Motor (V49)

• Left Dynamic Cornering Light Motor (V318) or Right Dynamic Cornering Light Motor (V319)

• Left Cornering Lamp (L148) or Right Cornering Lamp (L149)

• Headlamp range control lamp in instrument cluster

• AFS (Adaptive Front lighting System) lamp in instrument cluster

• The indicator light "lamp failure" lights up in instrument cluster when headlamp range control and AFS (Adaptive Front lighting System) system malfunctions => [ (Item 21) Lamp Failure Control Lamp ] Instrument Cluster Indicator Lamps.

- Connect the (VAS 5051B).

- On the (VAS 5051B), select "Guided Fault Finding".

- Using the "Go To" button, select "Functions/Component selection" and the following menu options in sequence:

• Body

• Electrical Equipment

• 01 - OBD capable systems

• Automatic headlamp range control cornering light

• Automatic headlamp range control functions

• AFS Output Diagnostic Test Mode (DTM)