Why is one wiper moving while the other is not?

[MacEmilio]

One wiper moving while the other is not may be due to the wiper linkage coming off or the motor linkage arm joint becoming detached. Additional information: The wiper assembly consists of the wiper motor, linkage rod, wiper frame, wiper blade, and wiper relay switch. Inspection method: Open the engine hood to observe if the transmission linkage is dislocated (this is the most common cause). Check if the fuse is intact. Disconnect the motor wire plug, turn on the power, and use a multimeter to measure if there is voltage. If the fuse is intact but there is no voltage at the motor, check if the turn signal combination switch is functioning properly. Generally, a burnt motor will have a scorched smell. If normal voltage is measured at the wiper motor when the power is turned on, consider the condition of the motor. Pay attention to whether the connecting rod is properly attached to the wiper arm. Some arms are fixed to the wiper arm with screws, while others are locked with snap fasteners.