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Any questions you have before you begin buying, building and installing.
By Danil antonov
#44630
Hi. I can't speak English, so I use a translator. Please help me solve my problem.
I use an Arduino mega.
When the engine is not running, for some reason I always get a signal from the Board on the output from the inspector.
And when imitating the engine operation, the signal becomes variable.
This is similar to controlling an ignition coil, where the signal can be switched to constant strong, or constant weak
By theonewithin
#44632
Normal.

When Speeduino is off it will sends its injector outputs to ground.

Make sure you do not have your injectors powered when ECU is off.
By Danil antonov
#44633
theonewithin wrote:
Sun Aug 09, 2020 12:05 pm
Normal.

When Speeduino is off it will sends its injector outputs to ground.

Make sure you do not have your injectors powered when ECU is off.


It turns out that the injector can fill the cylinder if I did not immediately start the engine?
By pazi88
#44634
Danil antonov wrote:
Sun Aug 09, 2020 1:08 pm
theonewithin wrote:
Sun Aug 09, 2020 12:05 pm
Normal.

When Speeduino is off it will sends its injector outputs to ground.

Make sure you do not have your injectors powered when ECU is off.


It turns out that the injector can fill the cylinder if I did not immediately start the engine?
Well you have messed up the wiring or speeduino assembly, if that happens.
User avatar
By PSIG
#44680
I hope I understand your question. Speeduino injector outputs will show +12V when off, as the voltage passes to the output through the Injector LED and LED resistor. No problem, and the injectors will not operate, as they need Speeduino to ground the powered injectors in order to work.
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