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mechanic_

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    • M
      mechanic_ reacted to Sunnysky's post in the thread ECU repair with Thanks Thanks.
      As long as the output has large Vac, the 1Meg DMM may stop the clock when probing the input pin, it is ok when released. Avoid ESD...
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      mechanic_ reacted to danadak's post in the thread ECU repair with Thanks Thanks.
      Take a well focused pic of ECU with its cover off, component side, and do a google image search with pic to see if you can get a hit...
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      mechanic_ replied to the thread ECU repair.
      Yes i asked chatgbt, but didnt found anything. I will do a little more research
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      mechanic_ replied to the thread ECU repair.
      Thanks for advice SunnySky. :)) I will post if i found something
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      mechanic_ reacted to Sunnysky's post in the thread ECU repair with Like Like.
      - with power, the CPU crystal has 2 pins input and output. When measuring on DC both should be roughly half of the chip V+ to ground...
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      mechanic_ replied to the thread ECU repair.
      Thanks man.
    • M
      mechanic_ reacted to narkeleptk's post in the thread ECU repair with Like Like.
      It probably should be around 200 to 300 mA with RUN applied. Seeing only a few milliamps supports my original post that it is not waking...
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      mechanic_ replied to the thread ECU repair.
      Hello Bertus. Already checked. Its not short ciruited. Thank you for reply. :)))
    • M
      mechanic_ replied to the thread ECU repair.
      Here is the picture of my ECU.
      • 1780249889908.png
    • M
      mechanic_ replied to the thread ECU repair.
      I have identified the 12V supply and grounds. I also found the K-line. The ECU has constant 12V, ignition 12V, and three ground pins. I...
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      mechanic_ replied to the thread ECU repair.
      I don't have an ESR tester, but I'll try to buy one in the near future. I checked all the capacitors using a multimeter in capacitance...
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      mechanic_ reacted to narkeleptk's post in the thread ECU repair with Thanks Thanks.
      Considering the symptoms, it sounds like the ECU is completely offline. I've never worked on one of those here in the States, but it...
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      mechanic_ reacted to danadak's post in the thread ECU repair with Thanks Thanks.
      Per chance do you have a low V Capacitor checker ? They apply a couple 100 mV level of AC and look for ESR, and exceedingly low ESR is a...
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      mechanic_ reacted to danadak's post in the thread ECU repair with Thanks Thanks.
      Also if you can get access to a good optical inspection scope look at soldering, amazing how much stuff made with marginal solder...
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      mechanic_ reacted to narkeleptk's post in the thread ECU repair with Thanks Thanks.
      What are your issues with car and what is it that you suspect the ecu is doing/not doing?
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