Quote:
Originally Posted by Richard L
Sorrym I should have read it more carefully.
.. at pre-cranking key position..........
This is strange. the presence of the injector (+) should not trigger the system unless the injector (-) is >0.5V below 11.5-12.5V. This how the H3 defines a ground pulse.
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Quote:
Originally Posted by Ilkka
Well injector- is 10.8V against ground when not connected to ECU pin3. When connected, injector- vs. ground drops down to 0.12V.
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Isn't this the problem? Injector- is 10.8V (or actually 0.12V when connected to ECU pin3) when injector+ is 12V? Higher than 0.5V difference.
I don't understand why injector- goes down to 0.12V when connected to ECU pin3. The pin3 must be grounded during pre-crank, otherwise it doesn't make sense.
What's between those two wires (injector + and -) inside the box?