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OBDII Protocol -- PWM or VPW???

Discussion in '1st Gen. Tacomas (1995-2004)' started by seligman, Jun 30, 2010.

  1. Jun 30, 2010 at 6:46 PM
    #1
    seligman

    seligman [OP] Well-Known Member

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    Does anyone know which OBDII protocol is used on 1st Gen Tacomas? Reason I'm curious is for ScanGaugeII (XGauge) programming purposes.

    I found this diagram on the web.
    My 1996 Tacoma 2.4L has pins 2, 4, 5, 9, 10, 11, 12, 13, 14, 15, 16 which means the protocol could be PWM, or VPW, or both.

    Any ideas?

    obdii.jpg
     
  2. Jun 30, 2010 at 6:58 PM
    #2
    Manlaan

    Manlaan Well-Known Member

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    Greg
    Riverton, Utah
    Vehicle:
    2002 XtraCab SR5 V6 4x4 Black
    See Signature
    I'm not certain, but is there a specific reading you're looking for?

    The only ones I've been able to find that work (in addition to most of the pre-programmed ones) on my 2002 are:

    MAF (Mass Air Flow)
    TXD: 07 E0 01 10
    RXF: 04 41 45 10 00 00
    RXD: 28 10
    MTH: 00 01 00 01 00 00

    Trans Temp
    TXD: 68 6A F1 01 B4
    RXF: 04 41 05 B4 00 00
    RXD: 28 08
    MTH: 00 09 00 05 FF D8

    Horsepower
    TXD: 00
    RXF: 40 00 80 00 00 00
    RXD: 00 00
    MTH: 00 0A 00 17 00 00
     
  3. Jul 1, 2010 at 3:07 AM
    #3
    seligman

    seligman [OP] Well-Known Member

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    Some of the XGauge codes are for ISO and VPW protocols. The codes for PWM protocols are different.

    If I wanted to use the ScanGaugeII on a newer Toyota (ISO protocol), the XGauge PWM codes won't be compatible.

    Thanks in advance!
     
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