AW: [DML] Re: Idle Speed Motor / Cooling
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AW: [DML] Re: Idle Speed Motor / Cooling



No like I said earlier the motor is driven with a 100Hz PWM.
But to test it if it is still ok a DC voltage can be applied.
DC would be like worst case, or similar to fully open or fully 
closed position. 
I haven't measured the inductivity of the coil, but it can't 
be high so I guess that at 100Hz the inductivity won't reduce 
the current too much. Well - somebody could measure the input 
current to the ECU if interested.

Next thing is - I bet that BOSCH built the motor failsafe - 
a burned transistor that makes a short won't destroy the motor.

Still the question for Derek is - is the motor ok ?
or are the bearings rusted and stuck open ?

Long discussion for a 2 minute test where the test for the
motor itself takes only a second each time you test it.

Elvis


To flat DC, a coil (inductor) is a resistor..  

Question is, does the ECU output flat DC??






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