The mirror drive in most models is carried out from 2 vertical and horizontal displacement electric motors.
1. Turn on the ignition (do not start the engine) and lower the side windows. With the selector mounted in the switch, turn on the desired mirror and check the operation of the drive of the right and left mirrors, shifting them to the right and left, up and down.
2. Listen to the operation of the electric motors.
3. If the operation of the electric motors is tapped, and the mirror does not move, then the drive mechanism inside the mirror is faulty. Remove the mirror and disassemble.
4. If the operation of the electric motors is not heard and the mirrors do not move, then check the fuse.
5. If the fuse is good, then remove the switch and check the closure of its contacts.
6. Connect the switch. Locate the wire from the switch to ground. Without disconnecting the switch, short this wire to ground with a jumper. If the mirror is working properly with the jumper, then repair "regular" ground connection.
7. If the mirror does not work, then disassemble the mirror and check for voltage on the wires. Turn on the ignition and move the switch to all positions, checking the voltage. There should be voltage on one of the wires from the switch in each of its positions (except for the Off position).
8. If there is no voltage, then check the circuit from the mirror to the switch.
9. If there is voltage, then remove the mirror and check its operation by connecting via jumpers. If the mirror does not work, then replace it.