Can this part be disassembled, and fixed?!?

My wiper (Felicia Combi LX) stopped working 2 days ago...

The wiring is OK - I checked this with an instrument. The switch behind the wheel is OK also.

The water sprays on the rear windshield, but the wiper arm doesn't move. And here's the most interesting part - when I try to activate the rear wiper, the tag lights light up... :eek:

I'm sure this hasn't happened when everything was ok and the wiper was working...

Suggestions?!?

It still sounds like the wire has chaffed where it passes from body to tailgate

Then, how did I measure the signal?

I used an instrument for the 3 wire connector that connects to the motor. When I move the switch, I have voltage, which means there is POWER that operates the motor...

Problem solved now...

Thanx for the advice bobob...

I have voltage, but the ground was almost cut in one place...