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Rear O2 sensor wiring V70-XC70 1998

posted by  DMANPDI on  Sun Sep 9 16:59 CST 2007
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last visit: Sun Nov 11 18:36 CST 2007
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I have a 1998 V70 non-turbo with a rear O2 sensor wiring problem. I bought a new sensor from FCP but the resulting voltage is always read as 0.00 volts through the OBD port. If I unplug the sensor, I also get 0.00 volts obviously.

Does anyone know the pin assignments for the ECU for this rear sensor. I would like to test continuity between the plug and the ECU connector. There are two 43-pin connectors arranged as 1-14,15-29 and 30-43. Which one is 'A' and which one is 'B' ?

It might also be the ECU, right? Anyone had this problem? Thanks in advance.






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