Electronics won’t let me start my Z and OBD port and ECU won’t connect. Need a mechan

osburnrs

It grabbed the two wires going to the passenger side manifold intake control valve. It would still run at that point but the cel would stay on and when I disconnected the wiring harnesses is where all of my troubles began. I was checking the wires for continuity the key light and security lights came on and disabled the car from starting. Keys open and turn everything on and go all the way to start and engage clutch. When you push start everything just turns off but that was 2 ecu’s ago.




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2013-Z33

Those are the (CVTC) intake timing control valves. If the two wires that run to these were shorted together(one is +12v other goes to ECU) then when the engine is turning, the ECU's driver for them would get smoked as its trying to switch the battery to ground. As with the coil example the driver IC could get collateral damage. You said that the harness was repaired and the ECU was replaced after, if so then the next ECU should have been good to go...but if these two wires are still shorted together, each time the engine starts to turn you blow another ECU.