jony Posted October 24, 2020 Report Share Posted October 24, 2020 no connection no matter what fix i try i have had problems and finnaly fixed and now this, project message that USB connection is present but I cannot connect no matter what I try thank on for message is definitely present as nothing has changed since I'm plugging my to connect Quote Link to comment Share on other sites More sharing options...
jony Posted October 24, 2020 Author Report Share Posted October 24, 2020 No check engine light when key is on, I'm guessing now power ? Quote Link to comment Share on other sites More sharing options...
Adamw Posted October 24, 2020 Report Share Posted October 24, 2020 33 minutes ago, jony said: No check engine light when key is on, I'm guessing now power ? Most likely. If the engine doesnt run then the easiest way to tell if the ecu is powered up is to pull the cover off the case, there is a blue or greeen LED inside that glows when powered up. Quote Link to comment Share on other sites More sharing options...
jony Posted October 24, 2020 Author Report Share Posted October 24, 2020 Car was running fine I finally sorted the connection problem and now since I am having no luck at all am getting contain usb connected but ecu is not and I am on the right port. I can send screen shots if I need to but I have virtually read every problem with connection and trialed everything and was the first thing I had read from you ( the dash ) so I finally admitted defeat and unplugged it and was amazed with link and now I'm devasted and I can't use it just after getting it working lol Quote Link to comment Share on other sites More sharing options...
Adamw Posted October 24, 2020 Report Share Posted October 24, 2020 Sorry you are not making any sense. I’m not sure if you are translating from a different language or just not writing clearly. Can you please start again and try to explain the problem more clearly. If you are not a native English speaker then explain in your own language and I will try translating. Quote Link to comment Share on other sites More sharing options...
jony Posted October 24, 2020 Author Report Share Posted October 24, 2020 I was using voice to text. What would cause me to have no power to ecu nothing has changed since I last connected no issue and now I have mysteriously lost power Quote Link to comment Share on other sites More sharing options...
Adamw Posted October 24, 2020 Report Share Posted October 24, 2020 So have you now confirmed that it is definitely not powered up by checking if the power LED is glowing? 10 hours ago, jony said: What would cause me to have no power to ecu nothing has changed since I last connected no issue and now I have mysteriously lost power It could be anything from a blown fuse to a flat battery to a bad connection somewhere. If you have confirmed it is not powered up then please give more detail of what model car etc and I can give some further troubleshooting steps. Do you have a multimeter? Quote Link to comment Share on other sites More sharing options...
jony Posted October 25, 2020 Author Report Share Posted October 25, 2020 350z I have had car on a charger and ive had it directly jumped from my 370 and then my subaru Forrester xt different more powerful battery again Quote Link to comment Share on other sites More sharing options...
Adamw Posted October 25, 2020 Report Share Posted October 25, 2020 So the engine no longer runs either? Does it still crank over etc? Quote Link to comment Share on other sites More sharing options...
jony Posted October 25, 2020 Author Report Share Posted October 25, 2020 I actually had changed the an 1 error low to 0 and high to v as I had a issue registering temps and I left it for a day and can't get on to it so it's put me at minus -40 so no it doesnt Still cranks but wont get past the coldness that is registering Quote Link to comment Share on other sites More sharing options...
Adamw Posted October 26, 2020 Report Share Posted October 26, 2020 I think the next step is to pull the cover off to confirm if it is powered up or not. Quote Link to comment Share on other sites More sharing options...
jony Posted October 29, 2020 Author Report Share Posted October 29, 2020 It's not powering up nothing has happened since I was last connected now just no power ive checked all grounds Quote Link to comment Share on other sites More sharing options...
Adamw Posted October 29, 2020 Report Share Posted October 29, 2020 The next thing I would try: With the ecu still plugged in and ign switch on (use a pin/needle poked into the connector beside the wire so it touches the terminal inside), check if there is 12V on pin 109 (this is the ign switch). If that looks ok, check there is 0V (gnd) on pin 111 (this is the main relay trigger). If that looks ok, check there is 12V on pin 119 & 120 (these are the main power supplies from the main relay). That should give us a good idea where the problem lay. Quote Link to comment Share on other sites More sharing options...
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