How to test Honda K series IACV (idle air control valve)

Feel free to ask any question regarding it. 2-wire PWM-based iacv can be tested using the same method. Code can be provided. Screws have been molested by the mechanics.
#k24a #k24a2 #k20a #k20a2 #honda #kswap #speeduino #standalone #tuning #accord #cl9 #egcivic #ekcivic #civic #vtec #vtecsociety #vtechvideos

[@Jinx-tw7oj]

Awesome video can you please list the parts you used to make it? Also the code I can see it clearly?

[@engineeringapplied-e80]

Thanks. You just need an arduino (any), a N channel mosfet like IRF540 etc, bread board and some jumper wires. I have mention the pinouts of iacv in the video.
Here's the code.
// Arduino Nanao
// Any N channel mosfet
// Arduino Pin 3 for pwm output
// Arduino Pin A0 for analog input
int pin_write=3;
int pin_read=0;
int in_put=0,pwm=0;
void setup() {
// put your setup code here, to run once:
Serial.begin(115200);
pinMode(pin_write,OUTPUT);
pinMode(pin_read,INPUT);
}
void loop() {
// put your main code here, to run repeatedly:
in_put=analogRead(pin_read);
pwm=map(in_put,0 ,1023, 0, 255);
analogWrite(pin_write,pwm);
Serial.print("PWM = ");
Serial.println(pwm);
}

[@Jinx-tw7oj]

@@engineeringapplied-e80 thank you so much for sharing this information.

[@Jakkk]

i heard you said you can control the iacv, amount of air getting in.. how do u do this?

[@Jakkk]

i'm idling at 2000-3000 can not find the issue

[@engineeringapplied-e80]

@@Jakkk which car we are talking about? Iacv is just a valve that allows to pass. More air means more rpm.

[@Jakkk]

@@engineeringapplied-e80 k20a2 i was idling at 200rpm so i replaced the iacv, the issue was fixed for about 2 hours, my car idles at 2300-3000rpm now, is there any way i can adjust the iacv or anything for a lower idle?

[@engineeringapplied-e80]

@@Jakkk be sure about wiring.
You can advance or retard the iacv. That will change the idling speed.

[@Jakkk]

@@engineeringapplied-e80 how do you advance/retard it?