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Thread: VCM Scanner and TCC brake status

  1. #1
    Potential Tuner
    Join Date
    Mar 2013
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    8

    VCM Scanner and TCC brake status

    Does anyone know how to use the VCM scanner to log or read the status of the TCC brake switch? I did a trans swap and I providing a ground to the TCC wire for the computer but I want to confirm that the computer is receiving the signal.

  2. #2
    Tuner in Training
    Join Date
    Aug 2016
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    15
    Quote Originally Posted by MikeVank View Post
    Does anyone know how to use the VCM scanner to log or read the status of the TCC brake switch? I did a trans swap and I providing a ground to the TCC wire for the computer but I want to confirm that the computer is receiving the signal.
    Would be nice, my last vehicle i tuned the TCC would stay locked up. had to put a toggle switch on it so it would disengage then flip on after highway speeds
    headache, everything in tune was spot on

  3. #3
    Advanced Tuner IARLLC's Avatar
    Join Date
    Aug 2016
    Posts
    942
    On GEN3s the TCC brake wire (purple) should not be grounded. When you are touching the brakes it should be disconnected (open). When you are not touching the brakes it should receive +12.