I have a washer pump issue. The switch will turn the wipers but when depressed no fluid sprays out. The pump isn't running when depressed. I'm wondering if there is an easy way to tell if its the switch or the motor. Seems like if the switch will run the wipers its ok and that it must be the pump? Any thoughts would help. I thought there might be a way to diagnose the problem without going into town and buying a tester. Thanks Yall!