Is it possible to convert a OBD1 car to run a OBD2 ECU ?
Is it just a case of removing the OBD1 flashing light box and fitting a OBD2 socket ?
Or is it a little more complex than that ?
Thanks
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Is it possible to convert a OBD1 car to run a OBD2 ECU ?
Is it just a case of removing the OBD1 flashing light box and fitting a OBD2 socket ?
Or is it a little more complex than that ?
Thanks
Ahh, you have the same problem as me! :D
I'm going to be fitting mine next weekend
You need an OBD2 port (Got mine out of a vectra, need to move a few wires)
3 wires - Live, earth and signal
http://m44.wikia.com/wiki/Special:Ne...orschamtic.jpg
Pin 4 - Earth
Pin 16 - Live
Pin 7 - To pin B36 on the ECU
So is that all is needed to get a obd2 socket working in a obd1 car?
As far as I can tell, yes.
I've yet to do it though, its a project for next year :)
Thank you Paul I will post how it goes
Is 4.3 different to 4.4 as there are more than 3 wires going to the socket
You only need 3 leads on the obd2 socket, live, earth and the k-line to use a m4.4.
Dont want it for 4.4 tho after spaked to bomb the other wires are for abs etc so I assume I could connect them to the wires leading to the obd1 port I the engine bay and get them to work I may try it but only need the obd2 port for data
Hopefully in a couple of days I will get chance to try this I've got a socket from another Volvo and also got the ecu connectors so I can rob a pin.
I don't know if there's different colour wires on each model but pin b36 looks to be a purple and white wire but looking at the back of the obd2 socket there isn't a purple and white wire to pin 7 so weather it changes colour down the line for some reason I don't know.
Hopefully it works and then I will be able to put a definite response on it working and what to do.
Was this a success?
If it's just for reading the codes, you don't even need the obd port, just wire in a switch and push button.
https://www.youtube.com/watch?v=Cj_1H7zPL6w
Cheers lads . As for colin's input what had you done there as in whats it achive?
So, guys, i have m43 with a led diagnostic under the hood and you say i can make it obd2 and read it with for example an Androiod app ?
Ok, thanks, it will help me, i want to follow whats happening with oil temperature during driving because i have no oil cooler on my t5 so i want to read the temp
As above, on the 850 (or the p1 x70) there is only an oil pressure sensor which triggers when the pressure drops below a certain level.
You would need to add an oil temp sensor and a gauge to monitor the oil temp.
I did not know that...i will add the gauge then.
But the rest will be fine for monitoring...
Thanks!