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  1. 04-19-2012 06:39 AM #4
    Reich
    Reich is offline
    Veteran Member Four Rings Reich's Avatar
    Join Date
    Oct 14 2007
    AZ Member #
    21807
    My Garage
    2001 s4 ; 2001 jetta tdi
    Location
    Val-Belair

    Here are the 5 wires assigment that I've found. From the sensor side connector.
    Pin6 (Red wire) = (I) pump
    Pin4 (White wire) = Heater-
    Pin1 (Black wire) = Voltage supply
    Pin3 (Gray wire) = Heater +
    Pin5 (Yellow wire)= Pump circuit ( that adds or remove oxygen from the O2 ) correct things...
    Pin2 is dead end at the other side of the connector. (used to loop the calibration resistor with pump)

    Source =http://www.megamanual.com/PWC/wire.htm

    Remember. Never put a multimeter probe at other pins then heaters. Heater check is the purpose of this thread.
    Hopefully that will help someone in the future.
    Last edited by Reich; 04-19-2012 at 12:36 PM. Reason: did several corrections on this page. It is now good.
    Rombotis built and EPL tune 770r 3L = best
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