Windshield Wipers Not Working Diagnose Fix 1a Auto Steps to test windshield wipers that are not working. connect the test light to the battery. connect the test light to the negative battery terminal and test its connection. test the “hot feed” yellow wire. disconnect the windshield wiper motor’s electrical connector. find the yellow wire’s terminal on the electrical connector, which is. Remove the nut with a socket and ratchet. disconnect the washer hose. pull the wiper arm up and off. if the threads are too worn down, you may need to replace the wiper arm. clean the threads. if the threads have debris, clean them with a 90 degree hook pick. check the threads on the wiper transmission.
Windshield Wipers Not Working Diagnose Fix 1a Auto 1. diagnosing the sprayer nozzles. how to diagnose a windshield washer sprayer nozzle that’s not working. check the washer fluid level. confirm the windshield washer fluid reservoir has washer fluid and add fluid if it is low. disconnect the washer fluid hose. if the nozzle or sprayer does not spray fluid with a full tank of washer fluid. Okay, i see what's happening here. that passenger side wiper arm isn't functioning the way that it should, so we need to see what's going on. now when diagnosing this, i'm just gonna jump right past trying to figure out if the motor itself is working. why is that? well, because one of the wiper blades is working perfectly, but the other one isn't. For more info visit us at: 1aau.to h cas is only one of your windshield wipers wiping? it could just be a loose nut, or it could be a damaged wiper tr. Step 1 :checking the test light. 0:27. connect the test light clamp to the negative battery post. touch the test light probe to the positive battery post. check that the test light comes on. step 2 :testing the wiper motor. 0:48. turn the key to the on position. disconnect the wiper motor electrical connector.
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