Identifying a ECU component.

Discussion in 'Automotive Electronics' started by g60chubb, Feb 19, 2017.

  1. g60chubb

    Thread Starter New Member

    Sep 13, 2014
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    So I'm having trouble with my Golf not starting and after much testing I've put down to a faulty ECU so opened it up and found what looks like a faulty resistor. 4 strip code indicates 21ohms and +_10% tolerance but i can't find a suitable replacement. Its from the early 90s but i'd like to think I could still get replacement bits.

    Am I wrong?
    Also I noticed its labelled as DR1 instead of just R does that mean it's not just a standard resistor?

    [​IMG]
     
  2. R!f@@

    AAC Fanatic!

    Apr 2, 2009
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    Check with meter first.
     
  3. g60chubb

    Thread Starter New Member

    Sep 13, 2014
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    I think it's actually a solenoid. It's now just a case of finding a replacement... I think. I found this video and the guy says it.s a resistor and a guy in the comments seems to be sure its a solenoid.

     
  4. g60chubb

    Thread Starter New Member

    Sep 13, 2014
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    Found it. Inductor would probably be a better way of describing it. Ordered and en route. 22uh 10% tolerance.
     
  5. ian field

    AAC Fanatic!

    Oct 27, 2012
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    The resin coating looks like a chunk knocked off which suggests a drastic event, the P6K surge clamp diode nearby suggests it may be in a hazard prone part of the circuitry.

    There's probably more damage than just the bit you can see.
     
  6. g60chubb

    Thread Starter New Member

    Sep 13, 2014
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    I'm suspecting that. I think the diodes might need changing. The caps are fine. I'll order up the diodes on the off chance. Hopefully I can sort it with that.
     
  7. g60chubb

    Thread Starter New Member

    Sep 13, 2014
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    D8 is next in the chain. Apparently it's there to protect the rest of the board so fingers crossed.
     
  8. Kjeldgaard

    Member

    Apr 7, 2016
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    The component number DR1 can also fit a Drossel in a German car.
     
  9. g60chubb

    Thread Starter New Member

    Sep 13, 2014
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    Ah makes it clear now.
     
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