Replacing Gas Discharge Lamp Module (GDL)

The central electronic module (CEM) has detected that the left-hand gas discharge lamp module (GDL) has an internal fault.

If the fault is intermittent, it has been registered previously but is no longer present. Intermittent faults can be caused by interference at start up of the gas discharge lamp module (GDL) or may be a different type of fault which occurs on different occasions. The fault is evaluated depending on how it occurs. If the fault recurs, replace the left-hand gas discharge lamp module (GDL).

If the fault is permanent, replace the left-hand gas discharge lamp module (GDL).

If the gas discharge lamp module (GDL) is replaced, the position sensor must be calibrated.

Remedy as necessary.

Other information: 

• see HEADLAMP BALLAST (XENON) (2004, 2005, 2006, 2007)
• see CALIBRATION OF POSITION SENSOR, GDL LAMPS

Fig 1: Identifying Right-Hand Gas Discharge Lamp Module

Courtesy of VOLVO CARS OF NORTH AMERICA.

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  Refer to VERIFICATION