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Home >> Porsche >> 2004 >> Cayenne Base >> Repair and Diagnosis (Single Page) >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Air Conditioning - Diagnostics >> Control module function (coding/programming), air-conditioning system >> Required status of recirculation valve

Required status of recirculation valve

In the menu item 'Actual values', the current required position of the recirculation valve can be read out. Numbers from '0' to '8' are output. The meaning of each number is shown in the following table.

RECIRCULATION VALVE REFERENCE CHART

0 100% position 'Fresh air'
1 0% position 'Recirculation air' set by air quality sensor
2 0% position 'Recirculation air' set by recirculation button
3 0% position 'Recirculation air' set by wipe and wash signal
4 0% position 'Recirculation air' set by 'Pull down' mode
(at high outside temperatures)
5 Intermediate position 'Partial recirculation air'
6 0% position 'Recirculation' set by reverse gear
(up to two minutes after engine start)
7 0% position 'Recirculation air' set by air conditioning system regulator at 'OFF'
8 0% position 'Recirculation air' set by blower position '0'