9-3 (9440) L4-2.0L Turbo (2.0 HOT) (2003)
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Type
The unipolar stepping motor consists of a rotor (10 poles) and four stator windings. A gearbox transfers the power from the rotor to the lever which
controls the damper.
Connection
The four stepping motor windings receive a common B+ feed from ACC unit pin 21 (K42) and grounds each corresponding winding (pin 15, 35, 14 and
34 in K42) in a specific order thus operating the motor in short pulses, which explains the name stepping motor. The rotational direction can be changed.
