Rather than replace the ISC motor, I repaired the actual motor. The motor would not operate and appeared to be seized due to old hard grease.
Remove the ISC motor from the car and them remove the motor cover. Two of the ISC mounting screws/bolts hold the motor case to the ISC houlding. Slowly remove the cover up holding the assembly vertical. This will keep the little motor brushes and springs in place for now. The motor brushes can be removed to keep from losing them, the brush springs stayed in place. Just clean the front and rear motor bearing surfaces with contact or electrical cleaner removing all old caked grease. Clean the commutator too. Also look inside the motor/magnet cover and clean the grease out of the bearing dimple. Add new grease (not sure type to advise here, I used a silicon gear grease) to bearing surfaces - motor case and where the shaft enters into the small hole and reassemble.

The motor can be bench tested by applying 12V to pins C & D. Reverse the voltage to check both directions or rotation. Pins A & B are contacts that can be checked with an Ohmmeter, move the plunger in and out (clicking sound) checking open or short. :thumbsup: