The rear windshield wiper on my wife's car stopped working. Time for troubleshooting!
Step 1: Fuse.
The fuse box in the dashboard has a blown fuse for the wiper. This fuse blew for a reason and I will not replace until I have investigated the wiper.
Step 2: Removing the Wiper.
Using wd40 and a 12mm spanner with Ratchet, I took off the wiper.
Step 3: Removing the Motor Assembly.
The electrical connector needed to be disconnected. A 22mm nut had to come out where the wiper was. Also three 10mm bolts were removed that held the assembly in place.
Step 4: Checking the Motor.
I powered the motor via my bench power supply and it worked fine! Of course the generous lubing of wd40 helped alot here.
Using a torx screwdriver, I opened the gear assembly and all looked well. I used my finger to spread some of the oem grease back onto the gears. I then mounted everything back up.
Step 5: Completion.
Mounting back the assembly and wiper was straightforward. I put a new fuse in place and tested the wiper on the vehicle. It ran smoothly!
No more yapping from the wife! Hooray.