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Thread: Wheel sensors

  1. #1

    Default Wheel sensors

    Is there anyway to read the values straight from the wheel sensors? The reason I ask is I am having ABS/ASR problems and I dont know if it's a bad wire or sensor and it would be nice to look at the reply for each sensor and at least know the general direction to look.

  2. #2
    Joe (Moderator) joecar's Avatar
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    No, at present EFILive doesn't read PIDs from other than the PCM;
    but, EFILive can read DTCs from other than the PCM
    (it may not have a description for each non-PCM DTC,
    but you can look up the DTC in the service manual).

  3. #3

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    Thanks. I got the codes. It is showing a bad wheel sensor, so I am going to try and swap the sensors and see if the problem moves.
    I also found this site. Some good info on codes. And tech info for the F-body.
    http://members.accessus.net/~090/dtcobd2c.html
    http://cv6.fakeleg.com/

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    [quote="joecar"]No, at present EFILive doesn't read PIDs from other than the PCM;


    I just noticed this thread. I know it's been here awhile but...
    Hmm, Why couldn't you use the PCM to monotor ABS?

    Question: Could you disconect the speed sensor from the tranny and patch to the ABS WSS, adjust the gear/tire ratio to match the pulse count of the WSS and then log the VSS and work from VSS pulse count?
    I'm old and Retired! I used to go fast. I don't go so fast anymore ...but, my cars still do!

  5. #5
    Joe (Moderator) joecar's Avatar
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    Quote Originally Posted by Maggie
    Quote Originally Posted by joecar
    No, at present EFILive doesn't read PIDs from other than the PCM;

    I just noticed this thread. I know it's been here awhile but...
    Hmm, Why couldn't you use the PCM to monotor ABS?

    Question: Could you disconect the speed sensor from the tranny and patch to the ABS WSS, adjust the gear/tire ratio to match the pulse count of the WSS and then log the VSS and work from VSS pulse count?
    Maggie,

    Spoken like a true engineer...

    Yes, you could patch/splice VSS from one of the WSS and adjust with EFILive Tune Tool;
    Vette's have their VSS after the ring/pinion and EFILive Tune Tool has a check box for this
    ("Transaxle"), so all you would have to alter is the pulses per tire rev.
    Could even make up a subharness so it can be undone in seconds.

    I think Dark Angel was referring to the other ABS controller PID's (there's about 40)
    that give info such as the state of the 8 or 9 solenoids that the ABS module controls.
    EFILive does not read the ABS PID's, but it does read the ABS DTC's.

    Hey... your "get groceries in a race car" sounds familiar...
    wasn't your F-bod written up in one of the magazines
    (...was it Pontiac Enthusiast...?) about 2 years ago...?
    Cool car.

    Cheers
    Joe
    8)

  6. #6
    Joe (Moderator) joecar's Avatar
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    Oh... I remember, it was written up in GMHTP.

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    Quote Originally Posted by joecar
    Oh... I remember, it was written up in GMHTP.
    Joecar, yes it was GMHTP. Great bunch of folks at that mag.
    Thanks for remembering.

    Maggie
    I'm old and Retired! I used to go fast. I don't go so fast anymore ...but, my cars still do!

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