Disconnect the 2P connector (A) from the washer motor (B).
3.
Test the motor by connecting battery power to the No. 1 terminal and ground the No. 2 terminal of the washer motor. The motor should run.
If the motor does not run, or fails to run smoothly, replace it.
If the motor runs smoothly, but little or no washer fluid is pumped, check for a disconnected or blocked washer hose, or a clogged washer motor outlet.