RepairPal is your advocate for car care advice and guidance

Q: Rear passenger window will not go back up. Changed the regulator and motor. on 2007 Jeep Grand Cherokee

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
After changing the motor and regulator the window went down, but won't go back up. Tried both drivers and back switch.
No car image 94a1663db56199c5353592009e34aaa51078a2469bed068bb8d6f0ba43accf97
Get a Repair Estimate
Guaranteed by certified locations nationwide. Learn more
RepairPal estimates are guaranteed at over 1,700 quality certified locations nationwide. Learn more
A week ago I had the window down. Tried making the window go up but it wouldn't. That's when I change the regulator and motor. The new regulator was in the up position. The window went down okay but wouldn't go back up. Tried the drivers and passenger switch, but no response for it to go up. Prior to this I had no problem with the window.
Failed MASTER switch or wiring to the the switch..... Master has to work before the designated window switch will... Got to be tested for switching voltage.... Like it should have been before parts replacement!!
Went to the local library and printed the power window wiring schematic. On the master switch, tested the switching voltage for the right back switch (as you suggested). Using the wiring schematic, located the down window contact, measured the voltage with the switch in the down position and got a reading of 12 volts. Without moving the probe, pulled the switch to the up position and got a reading of 10.3 volts, should be 0V. Moved the probe to the up contact, pulled up switch and got a reading of 12V and 0V in down position. Failed master switch as you suggested, replaced switch, back window works just fine. Thanks again!
Didn't find what you were looking for?