Why is the windshield wiper not moving?

[JocelynDella]

Reasons why the wiper is not moving: 1. Open the engine cover and observe whether the transmission linkage is dislocated; 2. Check if the fuse is intact; 3. Disconnect the motor wire plug, turn on the power, and use a multimeter to measure if there is voltage; 4. If the fuse is intact but the motor has no voltage, check whether the wiring and the combination switch of the turn signal are intact; 5. Check for any burnt smell indicating a motor failure. The working principle of the wiper is: the motor on the wiper drives the output through the worm gear on the armature shaft and drives the output gear through the idler gear and idler shaft. The output arm connected to the wiper linkage is then manipulated by the output shaft. When the motor rotates, the output arm and linkage are driven to move back and forth.