ecm rear o2 location? b17 white?

Discussion in 'Modifications And Maintenance' started by DISCOPOPE, May 20, 2004.

  1. DISCOPOPE
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    DISCOPOPE Well-Known Member

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    can anyone confirm my thoughts that the rear o2 sensor goes to b17 on the ecu... and is a solid white wire??

    Betam amesegënallô
     
  2. bikerboy
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    bikerboy Subie GOD Staff Member

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    I would have to look but I have the information at home. If you want to ping me from my profile that would remind me to look at home.

    M
     
  3. Musashi
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    Musashi Well-Known Member

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    on my b18c that would be true.
     
  4. DISCOPOPE
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    DISCOPOPE Well-Known Member

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    ok, i looked through the book.
    rear o2 signal should be off of connector b137 pin 25.

    looking at the cable set up, b137 has to be the rightmost one when looking at the ecu right side up.

    i grab my meter and check the voltage on pin 25...... it's nowhere near the .1 or .2 it should be when idling....

    http://www.skiffcraft.com/disco/ima...ne STi/Engine Diagnostics/MSA5T0413A35546.pdf

    am i an idiot?
    can anyone tell me what i'm doing wrong?
    thanks.
     
  5. WRX1
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    WRX1 _ Staff Member

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    Make sure you are looking at the connector the correct way. The best way is to match up the wires to the connector. I think I had to figure out what one was what when I installed my cel fix. I don't know the wire color for the sti. Sorry.

    Russ
     
  6. DISCOPOPE
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    DISCOPOPE Well-Known Member

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    figured out the issue.
    it was the correct pin.
    i had the meter set in the 10 amp fused mode.
    :rolleyes:
    <blockquote id="quote"><font size="1" face="Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote">am i an idiot?
    <hr height="1" noshade id="quote"></blockquote id="quote"></font id="quote">