hello, I have this Opel Astra ecu (picture attached) and the problem is that it fails to send signal to injectors, two injectors works fine, and other are failing, one gives low signaling, and another is always opened. (testes with Oscilloscope). what could be the problem?
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Thread: ECU two injectors fail to open
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27th April, 2019, 03:25 PM #1Top Poster
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ECU two injectors fail to open
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27th April, 2019, 03:46 PM #2DK Veteran
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did you try with another one and problem solved ? do you have same units known to be faulty (parts replacement) ? if yes open ecu and give clear pictures .
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27th April, 2019, 04:05 PM #3Top Poster
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The problem is that I do not have replacement unit. Tested wiring and injectors itself, both good. attaching pictures.
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27th April, 2019, 04:15 PM #4Top Poster
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New pic with heat sink removed, will draw diagram of it soon.
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27th April, 2019, 04:29 PM #5DK Veteran
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i think this ic near two yellow capacitors but not sure ... in last picture ... behind white connector not red connector ...
Last edited by hesham10; 27th April, 2019 at 04:32 PM.
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The Following User Says Thank You to hesham10 For This Useful Post:
VeryFastSnail (27th April, 2019)
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27th April, 2019, 04:37 PM #6Top Poster
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It's Delco 55199 chip injector controller. Do you think it's bad?
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27th April, 2019, 04:40 PM #7DK Veteran
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just try another one
wbr.
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27th April, 2019, 07:47 PM #8DK Veteran
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Injector driver 100%
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