Touch a grounded 12-volt test light to each connector's terminals to make sure voltage gets through by watching for a light. If your wipers move slower than normal, test your battery for full charge and proper function; then take out the wiper motor and move the wipers by hand one by one, fix any stuck moving parts, and add oil or fix what needs fixing before reinstalling the motor. When the wipers move slowly even after fixing connections, have the motor changed because all connections look fine. To see if your wipers work, check the fuse. Then, if the fuse is okay, attach a short piece of wire between the motor and ground to test again. To fix a ground issue, check the motor; if it works, deal with the ground; if not, check voltage directly at the motor. To find if the voltage is working, disconnect the motor and attach connected battery cables from the battery, applying them directly to test for any accidental binding connections. When the wiper still doesn't move, replace it. When there's no power coming through, test the switch for normal electrical flow; if the switch works fine, it might be the wipers' fault on vehicles with the wipers set to work intermittently. When checking wiper interval function, test all wires between the switch and wiper amplifier for continuity, and when the wiring is good, test the multi-function switch delay control knob's resistance. When the motor indicates good ground resistance (less than 5 ohms), check the motor connector. If pressing the wiper switch doesn't turn them off unless you turn your ignition to off, try disconnecting the switch wires and checking if the wipers stop. If they work, the switch is the problem, and needs replacing. However, if they keep running after that, there's a bad limit switch in the wiper motor, which you'll need to replace. Check the wiper's mechanics to see if anything is blocking their movement below the hood's line, and if nothing blocks their way, test and replace the wiring between the motor and switch if it shows good connection results. To replace the front wiper motor, first disconnect the cable from the negative battery terminal, then do the following steps: take off the right side windshield wiper arm, pull out the cowl cover and wiper linkage access plate, disconnect the wiper linkage from the crank arm of the motor, unplug the electrical connector, remove the motor retention bolts, lift out the motor from its place, and reverse the process for installation. For Xterra rear wiper change, cut the cable(-) from the battery, open the tailgate, remove its trim panel, take off the wiper arm, its cap, nut, and bolts, then remove motor mounting screws, disconnect the motor from the tailgate, and unplug electrical connections. Finding the wiper amplifier on your windshield wiper motor, remove its mounting bolt, unplug its electrical connector, take off the amplifier, then reassemble in the reverse order.
Posted by NissanPartsDeal Specialist 
