308C Excavator Electrical and Electronic System – Wiper Motor Does Not Rotate – Troubleshoot

Problem: The wiper motor does not rotate.

Solution: Check that the following wire terminals and components are connected properly: wiper relay, wiper motor relay, “CONN 2”, “CONN 4”, “CONN 19”, “CONN 27”, “CONN 37”, “CONN 49” and “CONN 50”. If the problem still exists, use the following procedure to troubleshoot the system.




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Schematic for “Wiper Motor Does Not Rotate”, “Wiper Motor Does Not Stop”, and “Window Washer Does Not Activate”