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  • Definitive sticky on POS wiring

    Enjoy my attached PDF.... There are mistakes on all ABY, AAN and ADU schematics. Please use this to keep things right.

    And other related articles of note --->

    http://www.urq20v.com/My_other_cars/S6/POS/S6POS.htm

    And these two provided by UrS4boy on the subject - somewhat AAN specific.

    1st here: http://forums.audiworld.com/s4s6/msgs/149771.phtml for generalities

    and then here: http://forums.audiworld.com/s4s6/msgs/83085.phtml for specifics
    Attached Files
    Paul Nugent
    Webmaster http://S2central.net
    Administrator http://S2forum.com

    1994 S2 Coupe ABY - aka Project Lazarus
    2001 A6 allroad 2.5TDi - family tank
    2003 S4 Avant 4.2 V8 - daily burble

    Purveyor of HomeFries and Exclusive agent for Samco hose kits (S2/RS2)

    There are only 10 kinds of people that understand binary - those that do, and those that don't

  • #2
    Good stuff Paul. Only one comment: In my (AAN) experience, I have seen both black and brown N122 POSs. In fact, the POS does not know or care what colour it is or, for that matter where it is relative to the N127. N122 and N127 are just arbitrary lables. What is important is the POS that is connected to the four pin ECU input has the three pin coil pack connector (for cylinders 1,2 and 3) on the other end and that the POS with the 3 pin (4 pin connector but only populated with 3 pins) ECU input has the 2 pin coil pack connector (for cylinders 4 and 5) on the other end.

    The POS part number for our AAN, ABY and ADU engines is 4A0 905 351A. However the brown Hitachi "351" (no "A") ones from the wasted spark V6s also work in a pinch and are probably cheap as chips at a breakers.
    RS2'd 93 UrS4 5 spd sedan
    94 UrS4 V8 6 spd manual avant

    Comment


    • #3
      Yep - I only made reference to N122, N127 and the colours called up as that's what is shown in the schematics.
      Paul Nugent
      Webmaster http://S2central.net
      Administrator http://S2forum.com

      1994 S2 Coupe ABY - aka Project Lazarus
      2001 A6 allroad 2.5TDi - family tank
      2003 S4 Avant 4.2 V8 - daily burble

      Purveyor of HomeFries and Exclusive agent for Samco hose kits (S2/RS2)

      There are only 10 kinds of people that understand binary - those that do, and those that don't

      Comment

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