Looking at the schematic, you would only have one power to the washer motor, and if the front washer works, the pump motor is probably good, since it is the same. Your switch inputs are all grounding inputs to the module, as well as rear hatch and window ajar. Does the wiper itself not work, because an ajar fault would cause that. I would check all of your powers, grounds, and inputs to the rear wiper module, and if they are all functioning as supposed, replace the rear module. If the rear wiper functions, but no wash, do you hear the pump run? There may be blockage in the liquid line.
Monday, December 19th, 2011 AT 4:37 PM