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Throttle Pos Sensor/Accelerator Pos Sensor Help

Discussion in '1st Gen. Tacomas (1995-2004)' started by HawaiianBrian, Sep 15, 2010.

  1. Sep 15, 2010 at 9:38 PM
    #1
    HawaiianBrian

    HawaiianBrian [OP] Member

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    My 04 Tacoma 6 cyl(5VZ-FE) has been having issues. I noticed a intermittent
    lack of response from the engine when pressing the gas pedal.

    Retrieved Error Codes:

    p2135 throttle/pedal/pos a/b voltage correlation
    p0122 A low input
    p0123 A High input
    p0222 B Low input
    p0120 A circuit

    Purchased an installed new TPS, cleared codes, reset ECM.

    Check Engine light still on. Read codes again, same codes.

    Now I don't get response from throttle until pedal is almost to the floor. When I manually move the accelerator cable there is a bunch of movement in the cable before the throttle replies.

    I had a local mech look at it before I got into it...he said I needed a new throttle body...seemed a bit drastic to me so I wanted to look at it myself.

    Any Ideas?
     
  2. Sep 16, 2010 at 2:15 AM
    #2
    HawaiianBrian

    HawaiianBrian [OP] Member

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    So I've been doing some research online and found a forum discussing issues with the 2004 6 cyl throttle body. Does anyone else know about this?

    I'm new here so forgive my ignorance...I'm not a mechanic by any means but money is tight right now and I need my truck. I was suspicious of the mechanic I took it to who said I needed a new throttle body, but maybe that's what is needed. Rather than throwing money away on this sensor and that sensor...perhaps a second opinion with a local mechanic wouldn't hurt.

    Thanks again for any help.
     
  3. Sep 16, 2010 at 2:16 AM
    #3
    HawaiianBrian

    HawaiianBrian [OP] Member

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  4. Sep 16, 2010 at 2:57 AM
    #4
    Manlaan

    Manlaan Well-Known Member

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    See Signature
    Do you know why he felt you needed a new throttle body? Is there a mechanical defect in it or a spring or motor thats broken?

    At this point, I think I'd go through the throttle body checklist to make sure everything is functioning since the mechanic said it needs a new one. http://www.ncttora.com/fsm/2003/Repair_Manual/03tacoma/sf5vzfe/thrbodwe/ovi.pdf

    I assume that you went through http://www.ncttora.com/fsm/2003/Repair_Manual/03tacoma/di/eg5vzfe/cip01202.pdf as to why you replaced the TPS

    I think since you replaced the TPS already, it may be pointing more towards a short between the TPS and the ECM (or the ECM itself), or maybe even just a corroded connector. Not really a lot of choices when it comes to this error code.

    I dont think your issue is the same as the other issue since theirs seems to be more of a random occurrence. Their issue may be related to TPS (although likely more of a ECM programming error), but since they aren't throwing any codes, I wouldn't consider it the same problem.
     
  5. Sep 16, 2010 at 5:24 AM
    #5
    98tacoma27

    98tacoma27 is gooder 'en chicken Moderator

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    I have to agree with Malaan on this.

    I did see this and it kind of stuck out like a sore thumb. You may just have a bad ground.

     
  6. Sep 16, 2010 at 6:37 AM
    #6
    mwilkerson

    mwilkerson Member

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    Does your truck have ETCS-i? if so try disconnecting the battery for 60 sec.If that does not do it make shore the sensor is installed so the throttle cam is moving the sensor cam.You can install it so the two cams do not match.
     
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