A4 Sedan V6-3.2L (BKH) (2007)
Version "2"
-
Disconnect connector - A - from Air Quality Sensor G238.
-
Release catch - B - and slide Air Quality Sensor G238 - C - downwards.
Terminal assignment in connector - A -
1. B+ (terminal "15" )
2. Negative (terminal "31")
3. Signal wire to operating and display module, Climatronic Control Module J255 (square-wave signal cannot be measured)