Windshield Wiper Motor

Windshield Wiper Motor Inspection




1. As illustrated, use a 12 V battery (1) and connect its (+) terminal to (a) terminal, and its (-) terminal to black lead cord (4). If wiper motor (2) rotates at a low revolution speed of 47 to 57 rpm, it is proper.
As for high speed check, connect battery (+) terminal to (b) terminal, and its (-) terminal to black lead cord. If motor rotates at a high revolution speed of 70 to 84 rpm, it is proper.




2. Testing automatic stop action:
Connect battery (1) (+) terminal to wiper motor (2) (c) terminal and (-) terminal to black lead cord (4), respectively.
Use a jumper (5) to short (d) and (a) terminals to each other to check whether motor shaft stops at a given position.
This position must conform to start position.
Stop motor again and again with the jumper to confirm that it stops at the same position.