audi Workshop Repair Guides

Audi Workshop Service and Repair Manuals

Barometric Pressure Sensor > < Air Sensor Potentiometer <--> [Air Flow Sensor Plate Position Sensor]|Description and Operation|Page 2241
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switch ON ignition

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pull slide 2 of adjusting device into the 1st detent (idle position)
^

specification: 0.2 to 0.5 volts

If specification NOT obtained:

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loosen mounting bolts on potentiometer 

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move sensor, in slot until the specification is obtained

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retighten mounting bolts
^

specification: 0.2 to 0.5 volts 

If the specification is still NOT obtained replace air distributor.

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pull slide 2 of adjusting device into the 2nd detent (Full throttle position)
^

specification: 4.0 to 4.5 volts 

If specification NOT obtained:

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repeat test in idle position and/or repeat basic adjustment of potentiometer

If specification OK

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push slide 2 of adjusting device down completely (rest position of sensor plate)
^

specification: 0.0 volts 

If specification NOT obtained:

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repeat lest in idle and full throttle positions

If specifications still NOT obtained after repeated adjustments

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replace air distributor

If specifications OK

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seal mounting screws with paint

Barometric Pressure Sensor > < Air Sensor Potentiometer <--> [Air Flow Sensor Plate Position Sensor]|Description and Operation|Page 2241