Crank, no start

Discussion in 'Import Vehicles' started by Oskido, Jan 7, 2018.

?

Please advise safe procedure to follow

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  1. Oskido

    Oskido Newbie

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    Please fill out the following to ask a question.

    MAKE: Toyota
    MODEL:Rav4 D-4D
    YEAR:2008
    MILES:126000
    ENGINE:2.2 Diesel
    DESCRIBE ISSUE.... Diagnostic test code P0200 given. All checks done stage 1-4 as stated by BAT advice but getting very high voltage reading of 86.4v (which should be 12v) when checking for current at injectors pins. Have used 3 different voltage meters, including test light and globe melted. This reading is from B+ of injectors pins (all 4 give same reading).

    Have checked all 4 injectors resistance with ohm meter and they fine - giving same resistance reading on all 4 injectors.

    What is causing this problem - my injector driver?
     
  2. nickb2

    nickb2 Wrench. I help when I can

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    I am assuming this is not a north American market rav 4.

    So I am going to have a lot of difficulty helping you with schematics and REAL specs.

    But if the globe melted, I am going to need more info.

    Was there already a thread open for this?
     
  3. nickb2

    nickb2 Wrench. I help when I can

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    Normally, and this is my advice, are you checking amperage, or voltage?

    Cuz if after three voltmeters, one test light globe melted, you may have your meters on the wrong scale blowing fuses and probably not probing the circuit in the right way. .

    Plz confirm.

    Is it your injector driver module? I really don't know what could cause this type of amperage draw. So you now need to tell us your level of technical skills with voltmeters.
     
  4. nickb2

    nickb2 Wrench. I help when I can

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    Plz tell us a little background of your technical ability, we will help further so you don't blow a 4th meter.

    I am sleepless tonight, the wind is still howling at my windows with the cyclone that just hit our eastern shores.

    So I have time to think, cuz I am not able to sleep.
     
  5. nickb2

    nickb2 Wrench. I help when I can

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    So, I am assuming this is a direct injection diesel or common rail? Correct?

    In any case, this type of engine will need 8 times or more fuel pressure and can need quite a lot of amperage to actuate an injector to insert fuel.

    So, again, are you on a capable meter to measure that type of amperage. Because it would totally normal for a globe type test light to melt. You may even have fried the injector module just by trying these types of tests without proper knowledge.

    This is not my writing, it comes from Wikipedia.


    Pilot injection is also utilized by the common rail fuel system to smooth engine operation. Small amounts of fuel are introduced into the combustion chamber prior to the main injection event

    This engine uses Toyota's D-4D Common Rail fuel injection technology operating at ultra high pressures of up to 135 MPa (1350 bar or about 19,580 psi) which is about 8 times more than the pressure of conventional fuel injection systems within a "common rail" that feeds the injectors on all four cylinders. This is combined with a 32-bit ECU which controls fuel quantity, valve-timing, and boost pressure at different engine parameters resulting in best fuel economy and also full utilization of power during acceleration.
     
  6. Oskido

    Oskido Newbie

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    Hi Nick, I'm from South Africa and The Rav4 I have is locally made. The problem started about 6 months ago (our winter) when the vehicle started when cold more and more difficult - l assume it being the Glow Plugs but no warning lights ever came up. About a week ago I got a warning message saying 'check battery' and in the same day the car would not start again.

    Glow plugs, battery and normal service items were replaced and full service was then carried out. Crank sensors were removed and cleaned and diagnostic test was done. Follow codes then came up - P0200, P0102, P0113 & U0105.

    I then proceeded to follow the BAT Diagnostic code search for code P0200 which gave all info and started testing all possible problems - mainly is the injectors receiving current? Yes it is but but an excessive amount - voltage showed 86.4v on 2 multi meter's which I thought is impossible as you should only be receiving 12v from battery to injector connectors?

    I then went a step further as recommend to test this with a test light and the globe in the light tester melted from the high voltage from injector pin
     
  7. Oskido

    Oskido Newbie

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    Ouch, we in SA are experiencing heat waves at moment of 38-45'c. I'm not very technically equipped or experienced in this area but am open to advice on how to proceed further.

    It's a common rail system but will check the new multi meter purchased and revert - what range should this meter be able to read?
     
  8. Oskido

    Oskido Newbie

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    Technical skills - very little with voltmeters. Can I send you a image of the current one used - I understand I'm checking DCV on the meter as currently plug in?
     

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  9. nickb2

    nickb2 Wrench. I help when I can

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    BTW, hello to south Africa, wish we had your winter here.

    So, again, are you sure you are measuring amperage, or voltage?. Because those are two different things.

    There is next to no way you are getting 86.4v DC on a 12v rated DC circuit.
     
    Last edited: Jan 7, 2018
  10. nickb2

    nickb2 Wrench. I help when I can

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    If that was the case, the whole engine harness would have melted.

    I think what you are trying to say, is that you think you have a direct short to ground? Yes?

    Plz correct me if you think I am wrong. I am french, if anybody else here can correct my bad English, plz do so.

    We are a community of help here for free. So someone will chime in here shortly to correct me if I made a written error.
     
    Last edited: Jan 7, 2018
  11. nickb2

    nickb2 Wrench. I help when I can

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    Last edited: Jan 7, 2018
  12. nickb2

    nickb2 Wrench. I help when I can

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    I very much encourage you to visit this site. Toyota is a very good company in regards to free information.

    ;)

    https://www.toyota-tech.eu/
     
  13. nickb2

    nickb2 Wrench. I help when I can

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  14. nickb2

    nickb2 Wrench. I help when I can

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    I could see that maybe you probed a circuit, got a 86.4 #, that would be normal for a OHM reading (resistance) for a common rail injector.

    Since these engines need such a high fuel pressure, it would be totally normal to see that type of resistance reading.

    Just look at your fuse box, and tell me what the fuel system fuse is rated at. If that fuse is not blown, you have an injector driver circuit code like you have described.

    Again, since I am not a south African technician, I am not familiar with what those specifications should be.
     
  15. nickb2

    nickb2 Wrench. I help when I can

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    From my understanding, the injector solenoid needs to combat a high compression to inject fuel. The only way to acutely measure that, is with a wave form scope.

    I have just completed a study course on hybrid vehicles. The meters to check those systems out are very similar to what you need for common rail injection engines.

    Sadly the course was in french, and my translation skills are limited to translate off of hand without having to translate my course notebooks, and that would take me weeks to do here and now.
     

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