When testing a 2 wire stepper motor ICV with a scope are you back probing both wires with one channel or both wire on one channel each, one wire on ch1 and second wire on ch2 with engine ground on both channels.
Hey there,
Good question. A two wire IAC motor is going to be PWM (pulse width modulated) or duty cycle controlled. You would have the ground lead on the battery, and ch1 lead to the control wire of the IAC.
I hope I haven't misinterpreted what you mean by ICV??
Here's a free ScannerDanner Premium classroom lecture on the subject.
The link should jump you right to the part about testing 2 wire IAC valves, but the whole video is full of good information if you've got time to watch the whole thing.
Sorry for hijacking your thread, but, is there any way to test an idle air control stepper motor with a dvom? I suspect that I am having an issue with it on a car that I am working on. Its an 8 pin throttlebody that has the idle control motor built into the tps which is built into the throttlebody.
Ash03 wrote: Sorry for hijacking your thread, but, is there any way to test an idle air control stepper motor with a dvom? I suspect that I am having an issue with it on a car that I am working on. Its an 8 pin throttlebody that has the idle control motor built into the tps which is built into the throttlebody.
Hi Ash,
Why don't you start a new thread in the "Post your repair questions here" section?
You can fill us in with the year, make and model of the car and whatever symptoms you're experiencing, and more people will be able to provide more specific help.
Ash03 wrote: Sorry for hijacking your thread, but, is there any way to test an idle air control stepper motor with a dvom? I suspect that I am having an issue with it on a car that I am working on. Its an 8 pin throttlebody that has the idle control motor built into the tps which is built into the throttlebody.
Hi Ash,
Why don't you start a new thread in the "Post your repair questions here" section?
You can fill us in with the year, make and model of the car and whatever symptoms you're experiencing, and more people will be able to provide more specific help.
OOPS! Looks like you've already done that! :blush:
