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Throttle Issues P2102

Discussion in 'Gen 2 Prius Technical Discussion' started by spitinuri, Aug 8, 2008.

  1. spitinuri

    spitinuri Member

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    First of all... I'm not a tech head when it comes to Prius. I am waiting on a 2005 prius rebuild and the last issue with the car is there is no throttle response (exept for manually) and the ice shuts down after about 30 seconds.

    Battery both traction and 12v have been exchanged. The pedal and cable have been changed. This car was driving fine before rebuild. So here we are.. do we exchange the ecu? Evidently there was a flash ecu upgrade for a throttle issue. Is there a possibility this is the issue? Once you change out the ecu you get into smartkey issues and the like.

    I didn't change the parts or pay for the parts. I'm just looking for a clue.

    Thanks in advance.
     
    #1 spitinuri, Aug 8, 2008
  2. Patrick Wong

    Patrick Wong DIY Enthusiast

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    Is DTC P2102 the only code that is logged? If so, the possible problem areas include the throttle control motor, the wiring harness, and the ECM. The accelerator pedal is not a possible problem area.

    I suggest that you inspect the throttle body interior and throttle plate, and clean both if dirty. If you still have a problem, then measure the resistance across the throttle control motor terminals. The spec is 0.3 ohms to 100 ohms at 68 degrees F, not sure why the allowable range is so great.

    The fact that the ICE shuts down may not indicate a problem. Once the engine has warmed up a little, it is supposed to shut down when not in use.
     
    #2 Patrick Wong, Aug 8, 2008
  3. galaxee

    galaxee mostly benevolent

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    ect= no throttle cable...
     
    #3 galaxee, Aug 8, 2008
  4. spitinuri

    spitinuri Member

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    pardon... should have said wiring harness
     
    #4 spitinuri, Aug 8, 2008
  5. galaxee

    galaxee mostly benevolent

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    ok, just want to make sure you're not getting screwed with.

    well, could be a problem with the tb- would check that first before diving into a new ecm.
     
    #5 galaxee, Aug 8, 2008
  6. spitinuri

    spitinuri Member

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    I trust the guy. He told me this one has really perplexed him. I think he was trying everything before changing the ecu. According to him when you change the ECU it involves the smart-key. He told me he has changed about every part (from working vehicles) to ensure that the replacement wasn't defective.

    I was thinking the update flash of ecu as a last ditch before the change out.
     
    #6 spitinuri, Aug 8, 2008
  7. hootywho32

    hootywho32 Junior Member

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    so what was your problem and did you ever get it fixed
     
    #7 hootywho32, Jun 16, 2014
    SFO likes this.
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