Mk1 ECU Pinout

[bloodline]

Hi all,

I know some here have access to information that us mortals are not privy to.

I have a wiring diagram for my pre '93 MX5/Eunos/Miata (however you wish to call it), but all it shows is the connection paths of the wired in the wiring loom, not the actual name/function and nominal voltages of the lines.

I want to build a USB interface board to start playing with my MX5's engine, using a USBMicro U421 interface board, which I have used in a previous project.

From what I can see from my diagrams, most of the engine sensors appear to be analogue, so most of the work would need to be building a set of Analogue to Digital convertors.

Any help, many thanks!

 

[bloodline]

Hi all,

I know some here have access to information that us mortals are not privy to.

I have a wiring diagram for my pre '93 MX5/Eunos/Miata (however you wish to call it), but all it shows is the connection paths of the wired in the wiring loom, not the actual name/function and nominal voltages of the lines.

I want to build a USB interface board to start playing with my MX5's engine, using a USBMicro U421 interface board, which I have used in a previous project.

From what I can see from my diagrams, most of the engine sensors appear to be analogue, so most of the work would need to be building a set of Analogue to Digital convertors.

Any help, many thanks!

To answer my own question:

http://www.miata.net/garage/ECU_Pin-Out.png

 

[kcbhiw]

Might I suggest looking into MegaSquirt. You'll end up with the same result for about $200 and a lot less overhead.

Thanks for the update with the link! That can be quite handy to have around.