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If drivers wiper arm will not move by motor operation and can be easily moved by hand ( with wiper on or off ) suspect disconnected/broken linkage. If wiper arm will not move by motor and takes effort ( With wiper on ) by hand... suspect seized wiper pivot
I guess the real question is,,, is it "trying" because the motor is too weak to move the wiper arms or is it trying because the wiper transmission is broken or otherwise defect ? You may be able to determine that by trying to manually assist the wipers by tugging gently on the arms. If the motor takes over and moves them then it most likely needs a new motor. If it doesn't move or moves very easily by hand with very little resistance it probably needs a new transmission. In either case, it's going to need a parts replacement.
Check the wiper arms are properly connected to the mechanism,that protrudes from the actual motor...these normaly have a tooth like system and therefor if the wiper arms are not connected properly then the wiper motor will run but the wipers wont move.....also check the wiper cross arm mechanism(located under the bonnet)as these are normaly on a push fit ball and could be worn and disengaged.
When you tried to move the wiper with the ice it probably broke an inner componette and connecting rodes from motor. You'll haft to inspect the rodes and motor to know what damage is done but it you can move the wiper easily by hand it's definitly broke. If it is real hard and dont want to move it might be jammed and you might be able to move it alittle to move it back into place.
in your car have dual action single arm wiper mechanism so if only motor working the problem is, in side the mechanism there is a fixed small wheel now it's broken from pin and became a fee wheel the n only free wheel working but not wiper arm moving, you must replace the wiper arm with mechanism
Under the cowl (it is a plastic piece that the windshield wipers come out of) are the wiper arms that connect to the wiper motor. There are plastic parts that hold the wiper arms to the wiper motor. Lots of time these plastic parts dry out and break and the wiper arm will fall off the wiper motor. I would bet if you tried to move one of the wipers by hand both of them would move with little resistance. This would tell me that the wiper arms are disconnected from the wiper motor. The parts to fix this are easy to get. I know the motormite HELP line of parts used to have the plastic bushings to fix this problem.