Sale ends todayGet 30% off any course (excluding packages)

Ends in --- --- ---

Ecumaster classic aux and stepper pin questions and general

EFI Wiring Fundamentals

Forum Posts



Tech Articles

Discussion and questions related to the course Motorsport Wiring Fundamentals

= Resolved threads



Ecumaster Classic, 1JZ engine

I have a few wiring questions, some more general than others. I don't want you to just spoon feed me answers, I genuinely want to know why it is the way it is. These are last few bits I am missing on the pinouts before I make a schematic.

ECU grounds are crimped together and all go to a star point on the block. What's a better practice, to crimp them closer to the ECU or closer to block?

Do I need pull up resistors for fluid pressure sensors?

Do I need flyback diodes for AUX outputs for VVTi, MAC valve and relays? If yes, do they come on the load side or ECU side or anyhow?

My stepper outputs are empty, I will use them to control relays. Can I also use one for a warning LED light? Says up to 1A. The way I read the manual I can choose whether a stepper motor pin works as a ground or +12V, is that correct?

Attached Files

We usually reply within 12hrs (often sooner)

Need Help?

Need help choosing a course?

Experiencing website difficulties?

Or need to contact us for any other reason?