The Valeo PSA R 90093044 control unit is a xenon headlight control unit. It is used in a variety of vehicles, including the Peugeot 308, 508, and 2008. The unit controls the activation of the xenon headlights, as well as adjusting the intensity and position of the headlights.

Valeo control unit 90093044

The control unit has a number of functions, including:

• Turning xenon headlights on and off
• Adjusting the intensity of the xenon headlights
• Adjusting the position of the xenon headlights
• Xenon headlight fault diagnosis

The control unit is connected to the xenon headlights via a wiring harness. The wiring harness provides power and control signals to the control unit. The control unit then uses these signals to turn the xenon headlights on and off, adjust the intensity of the xenon headlights, and adjust the position of the xenon headlights.

If the Valeo 90093044 control unit fails, the xenon headlights may not turn on or work properly. Symptoms of a faulty control unit may include:

• Xenon headlights that don't turn on
• Xenon headlights that turn on and off
• Xenon headlights that are not bright or are not adjusted correctly
• If you experience any of these symptoms, you should have your ECU diagnosed by a qualified mechanic.

Additionally, the Valeo 90093044 control unit features a self-diagnosis function. This feature allows the mechanic to diagnose problems with the control unit without disassembling it.