p259 protection diodes

[MadsF]

Hi, first of all i'm new within all of this so bare with me 


VEMS boardversion v3.8 and 6 IGBT + 2 Logic levels

I have been hooking up my VEMS and will soon be able to fire up the engine i believe. But i am unsure that everything i have done is correct, especially when it comes to protection of the ECU, the worst nightmare would be to fry the ECU, so please help me not do that 

I'm worried about if i need to place some kind of protection diodes on the p259 channels. I have used "Pin 16 EC 36 P259 ch.1" as a electric fan controller. But i've been talking to a friend of mine, that i might need some diode to protect the ECU.

I've made these drawings





I use these relays : http://images.biltema.com/PAXToImageService.svc/article/xlarge/42302


Can someone tell me if i've done something wrong? And where i need to add protection diodes.



(Bonus question --> i use 875 cc Deka injectors high impedance, will i also need protection diode here?)

Kind regards, Mads.

[Kamuto]

you no need any protection diodes, if you have 3.8 you have all needed diodes in your ecu

[MadsF]

Fantastic ! 

Thanks for a very quick reply.

[jdm ej1 95]

i know you already show this in your diagram

but.

make sure you wire your power to the relays from a switched source or they will stay on when the ecu is off.

[MadsF]

Thank you for heads up, this should be correct wired at the moment. But i found that when i'm cranking the engine, the ECU shuts down, because when the key is in turning position it loses its signal. So i need to find another wire as ECU power supply - Otherwise it will be rather hard to fire up the engine