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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Christopher Henkel
1990 190E 2.6 - Arctic white SOLD
1986 190E-16v - Blauswartze
1993 300CE - SOLD
2003 W208 CLK 320 Cabriolet - Magma Red