Troubleshooting on the Litronic headlight

WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2005 Porsche 911, 2004 Porsche 911, 2003 Porsche 911, 2002 Porsche 911, and 2001 Porsche 911. However, it is still accessible from the selected car via links, so may be relevant.

WARNING: Warning signs (yellow triangle with black high-voltage arrow) indicate high voltage (risk of fatal injury).

The light must always be switched off when removing and installing these components (control module, ignition unit, gas discharge lamp, servo motor). Once removed, a headlight is not under high voltage.
The gas discharge lamp (D2S lamp) may only be operated when installed in the reflector and with the headlight installed.

NOTE: When the dipped beams is faulty, the individual components (gas discharge lamp, ignition unit, control module) of the second headlight can be exchanged. Only the battery voltage, with the headlight removed, can be checked in the wing at the plug connection, at pin 9 = 56 b and pin 4 = 31 according to the circuit diagram. The gas discharge lamp may only be operated when installed in the reflector and with the headlight installed.