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ICE not kicking in

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by Markski037, Nov 3, 2015.

  1. Markski037

    Markski037 Junior Member

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    Hi new to the forum i have a problem with my 2006 Toyota Prius with 130k miles i had the 12v battery replaced 4 months ago because I had the dashboard not turning on when starting the car. I drive about 200 miles everyday for work (deliveries) so the car basically is turned on all day.

    Last week when I got home turned off my prius when I turned it back on later that night the dashboard would not turn on. Tried disconnecting the 12v battery and still no dashboard. Drove around like that for two days until Friday when suddenly the dashboard turned on and everything was fine.

    Later that night I turned on the prius and the dashboard didn't turn on again, shut it off and turned it back on, dashboard turned on.

    Now the big issue: The ICE does not want to turn on. Vsc and abs lights with the triangle of death are on. Code reader wasn't showing any codes.
    I towed the prius to my mechanic so I wouldn't get stranded with only the electric motor running, he checked the 12v battery, fuses and relays. Moving the car around on his lot they discharged the hybrid battery. At first there were still no check engine light and no codes. Now the prius is throwing the p3000 code. I need some help since he isn't a prius specialist my last resort is towing it to the Toyota dealer for diagnostic and repair.
     
    #1 Markski037, Nov 3, 2015
  2. bisco

    bisco cookie crumbler

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    welcome! could this be a bad mfd?
     
    #2 bisco, Nov 3, 2015
  3. Patrick Wong

    Patrick Wong DIY Enthusiast

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    1. What does "dashboard" mean? If you mean the combination meter that contains the speedometer, fuel gauge, transaxle shift indicator and warning lights, see the following:
    T-SB-0172-09 Combination Meter - Intermittent Display | PriusChat

    2. DTC P3000 is logged by the hybrid vehicle ECU and means there is a problem with the traction battery or the traction battery ECU. If you want to be self-sufficient regarding retrieving DTC, get Mini VCI. There probably are some DTC logged by the traction battery ECU which would further identify the root cause.
     
    #3 Patrick Wong, Nov 3, 2015
  4. JC91006

    JC91006 Senior Member

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    If the combination meter failed, you should have already missed the cut off on the extended warranty to have it fixed for free. It's a 9 year warranty and 2006 might be just out of that range.

    If the hybrid battery has issues, you are also out of warranty on that. It's 8yr/100k miles.

    So if you want, you can let the dealer diagnose your problem correctly, it should cost you only 1 hour of their diagnostic time. This might be your best route for now, to get you a $$$ figure to fix your problems. I'm afraid this looks like it'll be expensive.....but that's just a guess
     
    #4 JC91006, Nov 4, 2015
  5. Markski037

    Markski037 Junior Member

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    Yes I was talking about the combination meter, would its failure cause the ice not to turn on? Or the hybrid system code p3000 would cause the ice not to turn on and just let it run on electric motor? My brother also has a 2005 prius and Saturday we're going to put his battery and ecu in mine to see if I can get a heart beat from mine
     
    #5 Markski037, Nov 4, 2015
  6. Patrick Wong

    Patrick Wong DIY Enthusiast

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    The combination meter failure, and DTC P3000 are unrelated to the gasoline engine not turning on.

    Again, I suggest you need to retrieve all DTC to have a clearer idea about what is wrong with your car, before you start swapping parts. It sounds like your car has at least three unrelated issues.
     
    #6 Patrick Wong, Nov 4, 2015
  7. Markski037

    Markski037 Junior Member

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    Today My mechanic swapped my battery and battety computer with one he had. Joy ICE started to run for about 3-4 minutes couldn't Rev it up, just low rpm charged up the battery until two green bars, shut off and didn't start again. Got a new code u0100- lost communication with ecm. Any takes what's causing this?
     
    #7 Markski037, Nov 6, 2015
  8. JC91006

    JC91006 Senior Member

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    You said your mechanic was not a Prius expert, but he has an extra battery laying around for a Prius?

    This is from post #6 above, you need to have a Prius capable mechanic to retrieve all the codes to know what's going on.

    Again, I suggest you need to retrieve all DTC to have a clearer idea about what is wrong with your car, before you start swapping parts. It sounds like your car has at least three unrelated issues.
     
    #8 JC91006, Nov 6, 2015
  9. bisco

    bisco cookie crumbler

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    maybe the computer he put in isn't connected correctly.
     
    #9 bisco, Nov 6, 2015
  10. Markski037

    Markski037 Junior Member

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    Hes not a prius expert, he's a salvage car rebuilder, he took a battery out of a crashed prius the computer was connected properly because he switched back and forth between mine and the new one and still the same code. If he doesn't have it running by Monday I'll tow it to local Toyota dealer (n)
     
    #10 Markski037, Nov 6, 2015
  11. Markski037

    Markski037 Junior Member

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    Success the prius lives again, after reading online what causes the dtc u0100, we narrowed it down to the integration relay, That sits in the fuse box in the engine bay. Took it out to find underneath all the connections corroded, cleaned them off and put a new integration relay from a donor vehicle, and everything got back to normal.
     
    #11 Markski037, Nov 7, 2015
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