vest_racing

Could anyone tell me which pins on the hall sensors that is positve and negative?

this is on a FD engine.

billyboy

Pretty sure the FD ones are VR not hall - only two wire from memory. Depending on which ecu is used, might need the reluctor interface.

vest_racing

Yes, of course.
Don`t know what I was thinking..


But they are magnetic, so It shouldnt matter wich of the pins I use on + and - right?

billyboy

Far from an EE..., expect you'd have minor ignition timing differences based on rising or falling wave with polarity swaps.

I'd say follow Mazda practice, sorry about the size.




FWIW, Aubert did have massive problems in the early days with the magnetic sensors....if you're using an old ECU - Toyotas in particular - hence the passion for Honeywell Hall effects.

vest_racing

Thanx..


Yes Ive seen that..

But I was just going to check..

The ecu is an Sm4 with the new software 1.09 if I`m not wrong.

billyboy

Trigger on SM4 is the falling side for magnetic sensors.

Think there are better information sources than this poor sap out there....average one installation about every 3 or 4 years! The semi-official forum is not too far from your location, if I'm not mistaken.