Help with O2 B1S2 as wideband input
Thread Starter
TECH Addict
Joined: Nov 2001
Posts: 2,551
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From: St Louis, MO
Help with O2 B1S2 as wideband input I made a cable to connect my LM-1 to the B1S2 O2 Connector, the other side is capped off. I connected output 1 from the LM-1 to the purple wire for that O2.
In EFILive I'm seeing .444 V on both B1S2 and B2S2, this isnt right because B2S2 isnt even connected.
I have the rear O2 codes disabled with Type X in LS1Edit. Perhaps this is what causes it to show up at 444 mV in EFILive?
Has anyone else attempted to do this, what am I doing wrong?
In EFILive I'm seeing .444 V on both B1S2 and B2S2, this isnt right because B2S2 isnt even connected.
I have the rear O2 codes disabled with Type X in LS1Edit. Perhaps this is what causes it to show up at 444 mV in EFILive?
Has anyone else attempted to do this, what am I doing wrong?
Below is a link to how I did it.
https://ls1tech.com/forums/pcm-diagnostics-tuning/137303-how-i-used-efilive-capture-lm-1-wide-band-o2-data.html
John
https://ls1tech.com/forums/pcm-diagnostics-tuning/137303-how-i-used-efilive-capture-lm-1-wide-band-o2-data.html
John
TECH Apprentice
Joined: Jun 2002
Posts: 372
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From: Chester, VA
Yeah I read that doc too and I do not want to go though my AC to do it either. I would think it would be "about" the same though. A guy in my car club is currently using the rear O2. I will ask him about it next Wed.
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Joined: Nov 2003
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From: Dallas
I have been slowly working on trying this as well. I havent actually wired the LM-1 into the O2 harness yet...
But I think I can answer about the codes being turned off. In preparation for trying to use B1S2 I turned off all the B1S2 codes. I can still record the voltage from B1S2 and it tracks with B2S2 more or less.
Anyone have any more tips about getting the LM-1 signal in thru the rear O2s?
But I think I can answer about the codes being turned off. In preparation for trying to use B1S2 I turned off all the B1S2 codes. I can still record the voltage from B1S2 and it tracks with B2S2 more or less.
Anyone have any more tips about getting the LM-1 signal in thru the rear O2s?
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Originally Posted by deezel
I have been slowly working on trying this as well. I havent actually wired the LM-1 into the O2 harness yet...
But I think I can answer about the codes being turned off. In preparation for trying to use B1S2 I turned off all the B1S2 codes. I can still record the voltage from B1S2 and it tracks with B2S2 more or less.
Anyone have any more tips about getting the LM-1 signal in thru the rear O2s?
But I think I can answer about the codes being turned off. In preparation for trying to use B1S2 I turned off all the B1S2 codes. I can still record the voltage from B1S2 and it tracks with B2S2 more or less.
Anyone have any more tips about getting the LM-1 signal in thru the rear O2s?
My understanding is the A/C sensor is a 0-5 volt sensor, but the O2's are 0-1 volt. so you'd have to find a way to reduce the voltage of the output of the LM-1 to a 0-1 vold scale, then use your logging software to compinsate for the readings.
Originally Posted by Justin98TransAm
My understanding is the A/C sensor is a 0-5 volt sensor, but the O2's are 0-1 volt. so you'd have to find a way to reduce the voltage of the output of the LM-1 to a 0-1 vold scale, then use your logging software to compinsate for the readings.
The WB output is 0-5v and that is why the AC sender is ued
Originally Posted by HumpinSS
The WB output is 0-5v and that is why the AC sender is ued
yeah that's what I was saying, but he asked if you could use the B2S1 reading, I don't think it would be impossible but would need some monifications.
