Logic of naming actuators in VW-group is simple it contains "N" + actuator number. The actuator number is unique. Here you can find fitting location, connectors and some basic information about actuators.

To our mind, actuators information is reference, so there is only simple search by number.


Audi R8 42 (2007- )
Audi A8 4E (2002 -)
Audi A6 4F (2005- )
Audi Q7 4L (2007- )
Audi TT 8J (2006- )
Audi A4 8K (2008-)
Audi A3 8P (2003- )
Audi Q5 8R (2009- )

Checking AC compressor regulating valve -N280


The illustration shows a signal with a ratio of approx. 80%.

The pulse width -A- is dependent on desired refrigerant output, the vehicle electrical system voltage etc. (the current is regulated by the Climatronic control unit -J255- via the AC compressor regulating valve -N280- across the range -A-).

The signal interval -B- is always 2 milliseconds (corresponding to a frequency of 500 Hertz).

The signal interval is derived from the ratio of pulse width -A- to signal interval -B-.


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November 30, 2012
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