How do I troubleshoot front passenger side power window that goes down but not up?
The front passenger side power window in my Hyundai Elantra has been temperamental for a while now. For the past year or so it has been able to go down easily from either the driver or passenger switch, but would go up very slowly (or occasionally not at all). It finally stopped going up at all the other day (right before a huge thunderstorm, of course). I'm really inexperienced with respect to any car repairs so I'm hoping to get some advice regarding how to troubleshoot this. I know the motor is OK because the problem persists when I swap it out with a proven working motor from one of the other windows. I can manually move the window up and down by taking out the motor and moving the gear (or the window) by hand, so the mechanical track part seems to be good (I think this is called the regulator?). I'm not sure how to test the switch outside of buying a new one (unfortunately, the power connector for the passenger side switch is unlike the ones for the other windows so I can't swap them). However, it is my understanding that the switches rarely go bad so this may not be the problem. Also, the window-up part of the switch fails on both the driver and passenger side switches and it's unlikely that they both failed at the same time. I suppose there could be a problem with the wires themselves, but I'm not sure how to test this. I have a voltmeter/multimeter but I'm not really sure how to use it. There are also wires that go into the engine compartment and ultimately connect to the battery at some point (obviously), but I'm not sure what other components may be in between and whether or not these could be the cause of the problem. Any advice?
