ECU light

[Davidbolam]

Originally Posted by Numplumb

Hi David thanks for your reply but isn't that just for reading fault codes, I was thinking more of a light which comes on when ignition is turned on and then goes out unless there is a fault.
Regards Mick.

There isn't one of those on mine. Are you using a late model MX5?

David

[Stot]

I think the indicator LED does light up when there are codes to read If you dont jumper it into diagnostic mode too and just have the LED in there.

As a check you can unplug a sensor or two, coolant temp at the back of the engine or O2 sensor while running and see if it lights up.

Cheers
Stot