316ti compact E46 Oxygen / Lamda sensor wiring diagram

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Thread: 316ti compact E46 Oxygen / Lamda sensor wiring diagram

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  1. 316ti compact E46 Oxygen / Lamda sensor wiring diagram 
    #1
    Bimmer Fan
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    quattronut's Car Details
    Model of Car:
    316tise compact
    Year of Manufacture:
    2003
    Transmission Type:
    Manual
    Car Body Type:
    coupe

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    Hi don’t know if anyone can help.

    I have a 2003 316ti compact (E46). The dreaded yellow check engine lamp came on this morning. When I scanned for codes with my ELM based reader and proscan software I got code P0030- which points to a problem with the heating circuit on the pre cat oxygen sensor.
    I got under the car and found that the connector for the sensor was ok, no damaged cables or corroded contacts. I probed around and found battery volts (possibly heater supply) and a varying 0.450V possibly O2 sensor output. Also found what looked like a neat little test point under a removable plastic cover on the O2 sensor connector. Unfortunately I cannot find a wiring diagram for my car on the net.
    Does anyone know what the pin allocations are for the oxygen sensor? The
    O2 sensor has six wires & the connector has six pins but only five wires go back the loom. I did get about 94 Ohms resistance across two pins of the O2 sensor with it unplugged from the loom, which might suggest the heater element is ok. The car drives as normal. Once the fault code (DTC) is cleared it shows as a pending code immediately, if rescanned and after a few short drives the check engine lamp comes back on. The proscan software also suggests that the engine is running in an open loop mode and that it cannot get a reading from the pre cat O2 sensor, the post cat sensors gave a normal reading.
    Clearly I could go out and buy a replacement O2 sensor in the morning but from experience I would like to test that the correct volts and signals are getting to and from the sensor first.
    Any advice on the correct pinout for the sensor would be greatly appreciated......
     
     

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  3.  
    #2
    BMW Guru
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    Ronnie's Car Details
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    Never too old, never too new
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    Seeing as you want to be technical, look here http://spaghetticoder.org/bmw/wds/

    You will need Adobe SVG and Java for it to work, and it won't work with IE8 for some reason.
     
     

  4.  
    #3
    Bimmer Fan
    Car Details
    quattronut's Car Details
    Model of Car:
    316tise compact
    Year of Manufacture:
    2003
    Transmission Type:
    Manual
    Car Body Type:
    coupe

    Join Date
    May 2009
    Location
    london
    Posts
    2
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    Many thanks Ronnie just what I needed. Will post soloution once it is sorted.
     
     

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