2019 Audi A4 AHU pinouts
The connector/pinout information may be applied to the Audi (show all pinouts) model A4 AHU
Audi OBD-II diagnostic interface pinout for Audi A4 AHU produced after 1998 suitable for most Audi models after 1996 (i.e. Audi A3, A4, TT)