Fixing Most Common Problems Rear Wiper Doesn't Work Toyota Highlander 20082013
Many manufacturers are using a solid state, electronic wiper module to control voltage supply and intermittent wiper function on newer cars. This eliminates the oldstyle relay function. Worthwhile testing information regarding these modules is difficult to find. You can use process of elimination to isolate it as the problem. Make a fused power supply wire and ground wire. Apply direct voltage and make the motor run. If it runs and is not growling and noisy, it's okay. Remove the wiper switch and inspect it. Test it for proper voltage supply. If it's okay, then by process of elimination, the module is suspect.
in my case found 3 problems
1wiper motor sensor was burned
2wiper arm does not move stock bad rusted
3wiper motor gear setting was off
all detail are in the videos
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