Quote:
Originally Posted by camel125
Thanks Diseasel300 !
Well, that did it. Applied 12 volts directly to the ICV and the motor stalled out. So no issue with the ICV that I can tell. I am not sure how to measure voltage since it is all over the place or shows a very low value. I'll look into that more.
I am looking at the ICU which I thought was good but apparently not. Still not sure how to test the ICU. I understand there are some transistors that do go bad. I am going to check the three transistors on the board to see if they are bad and then replace them if so.
One step at a time...  |
Measuring the operating voltage of the ICV will not yield usable information. The ICV is driven by changes in current: 0mA>open, 1000mA>closed. To achieve the current variation the ICU modulates the width of the grounding pulse, hence PWM @ about 200 Hz. An O-scope will be of help.