Mitsubishi Repair: Wipers inop, wiper switches, fuse box

Question
What fuse controls the front/rear wipers? Thanks.

Answer
Hello Randy,

The fuse would be a good place to start in trying to fix your problem.  Mits. have a fuse box in the cab and one under the hood. The fuses should be labeled on the covers.

You may also want to check and see if the problem is the wiper drive motor(s).  This can easily be checked by testing the power wires to the motor for current by turning the wiper switch to the 'on' position and testing the wires for current with a test light or volt meter. Power to the motor will indicate a bad motor. As you have stated both front and rear wipers are affected, I have doubts to this being the problem. Should you find no current reaching the drive motor(s) and your fuses are not blown (you may want to quickly test to insure current is reaching your fuses), the indication would be a problem between the two locations in either a wiper switch, relay, or module.  As they receive excessive wear, wiper switches are generally next on my suspect list.

My troubleshooting actions are usually directed by cost. The cheaper problem is generally the one I will look for first, working my way up the ladder to the more expensive problems. Fuses are always the best place to start although a fuse that habitually blows is an indication of a larger problem and should be looked into more deeply. Tests for power through any suspect system will allow you to centralize your efforts and narrow your list of possible problem components.

I suggest, as well, you get a manual on your vehicle. They're available at most parts stores, inexpensive and a wealth of information.

Good luck!