I'm using a Bosch 2 wire PWM style IAC motor on my builds. I have had this valve operating well on the workbench using the Inj ch7 output (with the engine off - no other injectors being used)
I am using a IN4007 diode across the + and - at the valve connector, this gives me twice the duty cycle resolution making the valve very useable.
ECU flyback is: "30v Flyback"
My question is, what if any wiring modifications are needed to protect the ECU?
In the following 2 scenarios, what modifications, if any, are needed?
1) IAC powered by key switched 12v.
2) IAC powered by Injector 12v.
thanks,
Kevin