MatB Posted May 7, 2017 Report Share Posted May 7, 2017 I am interested if there is a way to interface to an old Link ECU with the following details, It has come up for sale but I am unsure if its just throwing money away if I buy it.The details on the sticker of the cover areHonda d42v4 090404I assume it has a serial interface that is needed to communicate with a PC if that is actually possible at all too?Any guidance would be appreciatedThanks Forgot to mention planned on running a H22a in an EG civic off this if possible, all Naturally aspirated and minor mods.Cheers Quote Link to comment Share on other sites More sharing options...
Simon Posted May 7, 2017 Report Share Posted May 7, 2017 Better to get an Atom or Monsoon if its a fresh install putting money and time in to a unit that old would be far better spent on a modern unit. The end result is so much better.Assuming the ECU is unchanged from when it left Link it would do the H22a application. Quote Link to comment Share on other sites More sharing options...
MatB Posted May 8, 2017 Author Report Share Posted May 8, 2017 What is needed to communicate with this G1 link Ecu then and is there any way to find out if it has been altered? Actually a clean install is the plan but maybe initially while car is being built for the track I could Jimmy this up to get car semi mobile was the thought. Doesn't have any serial cable adapter with it either. .. Quote Link to comment Share on other sites More sharing options...
Adamw Posted May 8, 2017 Report Share Posted May 8, 2017 To connect a pc to it you will need a "Serial Link": http://dealers.linkecu.com/SER they are still available new and cost about $120 in NZ.Note however these old G1's didnt have configurable trigger inputs - to allow them to work on different engines they needed a different "sub board" fitted. It was quite common to change these over time, hence Simon's comment above "Assuming the ECU is unchanged from when it left Link". So to confirm this you should open up the case and give us the numbers off the sub board or post a photo etc. The sub board is the smaller PCB that sits above the main board, about 40mm square I guess.So my suggestion is dont buy a serial link yet, confirm the sub-board is correct for your engine first. MatB 1 Quote Link to comment Share on other sites More sharing options...
MatB Posted May 8, 2017 Author Report Share Posted May 8, 2017 Took a bit but I have the photo of the daughter board . I'd be interested if this is designed for the h22a vtec or not .Thanks Quote Link to comment Share on other sites More sharing options...
MatB Posted May 9, 2017 Author Report Share Posted May 9, 2017 To connect a pc to it you will need a "Serial Link": http://dealers.linkecu.com/SER they are still available new and cost about $120 in NZ.Note however these old G1's didnt have configurable trigger inputs - to allow them to work on different engines they needed a different "sub board" fitted. It was quite common to change these over time, hence Simon's comment above "Assuming the ECU is unchanged from when it left Link". So to confirm this you should open up the case and give us the numbers off the sub board or post a photo etc. The sub board is the smaller PCB that sits above the main board, about 40mm square I guess.So my suggestion is dont buy a serial link yet, confirm the sub-board is correct for your engine first.does these numbers mean anything 2004/02 s/n 005829 off the daughter board? Quote Link to comment Share on other sites More sharing options...
Simon Posted May 9, 2017 Report Share Posted May 9, 2017 Yes that Sub-board will suit the H22a. You will need to wire trigger 1 to the 4 tooth pickup in the distributor trigger 2 to the single tooth. MatB 1 Quote Link to comment Share on other sites More sharing options...
MatB Posted May 9, 2017 Author Report Share Posted May 9, 2017 Ok thanks Much appreciated. So what pc software will communicate with it. I understand that I need a serial link too. Is there Anything else needed? Great resource this forum especially with your timely and expert responses. Quote Link to comment Share on other sites More sharing options...
Adamw Posted May 9, 2017 Report Share Posted May 9, 2017 You will need a serial link and assuming your laptop doesn't have a genuine old school 9pin serial port you will also need a USB to serial adapter (computer store).you will need pclink v2.5 available right down the bottom of the downloads page: http://www.linkecu.com/software-support/pc-link-downloads/ MatB 1 Quote Link to comment Share on other sites More sharing options...
MatB Posted May 9, 2017 Author Report Share Posted May 9, 2017 Cheers Quote Link to comment Share on other sites More sharing options...
MatB Posted May 13, 2017 Author Report Share Posted May 13, 2017 You will need a serial link and assuming your laptop doesn't have a genuine old school 9pin serial port you will also need a USB to serial adapter (computer store).you will need pclink v2.5 available right down the bottom of the downloads page: http://www.linkecu.com/software-support/pc-link-downloads/whwhere can I find a wiring diagram for the engine loom too please Quote Link to comment Share on other sites More sharing options...
Adamw Posted May 14, 2017 Report Share Posted May 14, 2017 In this G1 forum, at the top is a pinned topic "G1 manuals". There is a LEMV4 manual in there. Quote Link to comment Share on other sites More sharing options...
MatB Posted May 14, 2017 Author Report Share Posted May 14, 2017 Thankyou Adamw, the LEMv4 one was almost the only manual I hadn't downloaded , I suppose I was a little mislead/confused by naming conventions of the various versions and what applied to what.( somehow I thought LEMV4 was a later model) All sorted now, onwards and upwards. Thanks for your efforts with this slightly concussed and confused old fella... Quote Link to comment Share on other sites More sharing options...
MatB Posted June 25, 2017 Author Report Share Posted June 25, 2017 So who can tell me what series Link ecu this is? Quote Link to comment Share on other sites More sharing options...
Simon Posted June 25, 2017 Report Share Posted June 25, 2017 G1 HondaLink to suit 92-95Civic / Integra Quote Link to comment Share on other sites More sharing options...
MatB Posted June 25, 2017 Author Report Share Posted June 25, 2017 (edited) G1 Oh well I guess it will be quite limited in functionality too. I am always on the look out for a G4 at a G1 price Edited June 25, 2017 by MatB Quote Link to comment Share on other sites More sharing options...
pablo Posted July 5, 2018 Report Share Posted July 5, 2018 hey guys my name is josh and i have a 1985 s10 chev blazer with a link ecu in it and would like to know what series it is and if theres a wiring diagram for it. any help would be great thanks Quote Link to comment Share on other sites More sharing options...
Simon Posted July 5, 2018 Report Share Posted July 5, 2018 Looks to be a very early G1, Hard to say for sure as the Micro sticker is missing. But given age of PCB is likely to be closest to D42V3 for wiring and set up info. http://forums.linkecu.com/applications/core/interface/file/attachment.php?id=2550 Quote Link to comment Share on other sites More sharing options...
pablo Posted July 5, 2018 Report Share Posted July 5, 2018 cheers simon thanks for the quick reply and info was also wondering what is the best way to test if my link igniter is working properly as im having trouble getting spark Quote Link to comment Share on other sites More sharing options...
Simon Posted July 5, 2018 Report Share Posted July 5, 2018 An LED test light on the input to the igniter will be handy when the ECU is turning on the coil the light should be on (voltage supplied to igniter) and then off for coil not charging. To test igniter if you put 5~12V on the input (disconnected from ECU) then release and you should get a spark. Only hold the voltage on for a very short time as too long and damage to the coil and or igniter can occur. Quote Link to comment Share on other sites More sharing options...
pablo Posted July 6, 2018 Report Share Posted July 6, 2018 thanks again will give this a try today Quote Link to comment Share on other sites More sharing options...
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