The information provided are in a majority of cases heuristic in approach. It is hope that valuable insights can be gained and it is intended to provoke further thoughts or suggestions.
Power Windows problems are usually caused by oxidation in the joints as do many electrical connects but shorting to ground is also common. A basic understanding of the circuitry is important and the best approach is using a test pen to pin point by back probing the connectors with the ign on , the ground pins and the live pins.
Test pen can be used to test ground or live as follows:
