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Re: Oxygen Sensor Wiring 850

posted by  someone claiming to be Leo Montreuil on  Tue Dec 15 16:43 CST 1998 [RELATED]

According my diagram there is 4 wire connector

From sensor To computer Connector pins #

white green 1

white green/black 2

black brown 4

grey green/white 3

Pins 1 & 2 are for the heating elements. One is connected to ground and the other one to the ECU (that is probably providing +12V). Pins 3 & 4 are connecting to the ECU to provide the Lamda voltage. Pin 3 is connected to ground in the ECU and pin 4 is providing the sensor voltage.





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