kinko_ben
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kinko_ben reacted to a post in a topic: Alternator Control - Aux 5 Fault
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Steve and Adam, Thanks for your suggestion. I got means that sensor grounds should be connected to ECU sensor ground out. My G4+ is plug in model for MX-5 and all genuine harnes has connected to G4+. and OEM ECU has two ground out pin. One is connected to water temp , throttle position and O2 sensor ground. Another one is connected to cam, crank, air mass(with air temp) sensor and engine cylinder block. Since I have two questions. 1. Does two ground outs work on the MX5 Plug-in same as OEM ECU? 2. If 1. was YES, should I remove ground connection to the cylinder block for sensor ground? Regards,
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Hi Adam, currently the sensor ground is connected to engine block. and both chassis ground and battery ground are connected to Engine block by OEM. yes, it has resistor spark plugs. wasted spark is given by two coils and grounded to chassis. Where should I connect sensor ground ? Thanks
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Hi, cj I have change plug cable to new one amd add new ground wire between battery- to engine block. also wrapped Crank and Cam Sensor harness using shield tube. but i have faced trigger1 error above 7,000 rpm sometimes. . I caught signal figure by trigger scope in the error. is this a noise ? as you can see, my cam trigger has three tooth. regards,
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Hi cj, thank you for your clarification. one of cause of this issue was sensor, but it is not all. will see the trigger signal by trigger scope on the weekend! and will shield sensor harness and compare the signal with no shield. regards kinko_ben
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Mr. CJ Thanks for your advise. currently i can't reproduce that issue easily. because it was occur on the truck with heated engine so will revert to old sensors and try to reproduce for trigger scope capturing. regards,
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kinko_ben joined the community
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My vehicle is MX-5 NA8 model (swapped to NB8 VVT engine) and controlled by MX5-Link plug-in I have setup triger1, triger2 and VVT solenoid as recommended in help. But sometimes I was facing “Trigger1 err” in the driving over the 5,000rpm. And when trriger1 err occurred, RPM has indicated around 15,000 to 20,000. So, hit rev limit and cut the fuel by engine protection function. I have done the following to resolve this issue. 1. Changed the Cam and crank angle sensor to new one.(triger1 and 2) 2. Connected sensor ground lines to chassis ground. that seems like resolved when the driving on the public road. A few days ago, I have driven on the truck and after several laps, I have faced this issue again in over the 5,500 rpm. Unfortunate I don’t have any log of that time. Does anyone experienced that issue like me? I hope someone gives any advice to me. regards