Left rear window is not receiving any power?

1998 JEEP GRAND CHEROKEE

152,000 MILES • 4.0L • V6 • 4WD • AUTOMATIC

LVERNOTT

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As said above I am not getting any power to my driver side rear window. It doesn’t work from the driver door switch or the back door, there isn’t any noise at all when I try to engage the window. I replaced the window motor and removed the switch and put it on another door and that seems to work fine. I am left thinking it’s an electrical issue, but I don’t really know where to go from here. I looked up wiring diagrams but really didn’t understand what I was looking at. Any tips or info would be greatly appreciated.

Jul 25, 2022 at 1:44 PM

STEVE W.

CERTIFIED EXPERT
15,118 POSTS

Welcome to 2CarPros. The attached wiring diagram is for that window and it's controls. The way that switch works it simply transfers the power side of the diagram. Therefore I think you likely have a ground problem as it's less likely that losing both power feeds. However testing isn't difficult. First remove the switch as you dis before. Now take a test light and connect it to a good ground. Now go to the plug that went onto the switch. With the key on probe the 4 pins in the connector and you should have 2 with power (pins 1 and 4) They carry power back from the front window module. If you have power, there then connect a pin or similar to the ground clamp of the light and check that you have a ground at pin 6. I suspect it will be the issue. The ground goes from the switch out through the flex to a splice and then to the ground stud under the left front seat Chryslers are known for bad grounds because they tend to take 4-5 wires and crimp them in the same connector, one can fail with the rest looking perfect. What you can do to verify that would be to take a jumper wire connected to a good ground, plug the door switch in and connect the ground to the black wire at pin 6 if the window now works you have a bad ground.

Images (Click to enlarge)

Jul 25, 2022 at 2:44 PM