Author Topic: IAC PWM Output  (Read 283 times)

Offline og

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IAC PWM Output
« on: February 04, 2021, 03:02:59 am »
Hi
I finally set up my Mercedes M119 engine with a VEMS. It´s running now quite good but I´m facing the problem with idle.
My setup is a 2 wire Bosch soleniod. Since I have only 4 ignition outputs, I used EC18-Pin 17 to control via pwm.
Am I right with my considerations that this won´t work.
Should I use one of the logic level outputs instead?

Best regards
Olli

Offline Kamuto

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Re: IAC PWM Output
« Reply #1 on: February 05, 2021, 03:32:14 pm »
it should work I think, anyway logic level ones wont work, but you always can add aditional IGBT in the ecu, just it will require flyback diode for it.
Vems installer in Lithuania
valdas.sunokas@gmail.com

Offline og

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Re: IAC PWM Output
« Reply #2 on: February 05, 2021, 03:55:16 pm »
thanks for the reply Kamuto,

I use a diode on the soleniod allready like this 



is there a how to to add an additional IGBT

Olli

Offline og

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Re: IAC PWM Output
« Reply #3 on: February 14, 2021, 07:57:49 pm »
Got it solved, I add one more IGBT and use this output for drive the IAC.

Olli