Quote:
Originally Posted by crhenkel
no voltage to icv and the internal flap is almost all the way closed.
voltage and the internal flap begins to open and 12v and it will flip all the way open with a click. If this all works, you know the icv isnt dead, but that is about all it tells you. The time it is open and the % it is open is controlled elsewhere. have you checked yout engine/water/coolant temp sensors. They play a part in when the icv begins to open or stays shut.
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Yes, your description matches my current ICV operation. I tested the Coolant Temperature Sensor according to the test procedures and the resistance at cold and rising to operating temperatures appear to be correct according to the resistance/temp chart.
There's got to be more to the ICV operation than just a 10 second burst when the ignition is turned on. And, on top of that, there is no voltage change at the ICV connector when it first operates, then releases after 10 seconds. Maybe an internal thermal circuit?