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Old 06-29-2014, 11:07 AM
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power window troubles

I have a 1999 wj. The rear passenger side power window will go down but not up with master switch, and same behavior with the switch on the rear passenger side door. I can hear clicking in the passenger front door.
I pulled door skin, disconnected window motor from wiring harness and ran power directly from the battery to the motor. It goes up and down like a champ.
I also used same power source applied to appropriate wires in the connector that would go into the door switch. It goes up and down like a champ.
I removed other rear door skin and tried using that switch with problem window and it made no difference (still goes down but not up)

any suggestions to where I should look for problem??
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Old 06-29-2014, 12:23 PM
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Re: power window troubles

The driver for the rear passenger window is inside the passenger door module in the front door. I would remove the connector from the passenger door module, put power on the rear door power window wire and see if it works from there. If it does, then most probably the problem is inside the passenger door module. If it doesn´t, then most probably the wiring from the passenger door module to the rear door. A weak point is the wiring inside the door boots, where it is known to break after flexing many times.
The driver door module connector C1 pins 2 and 3 are going to the rear passenger door motor. Reversing the polarity on these two points will move the motor the other way around.
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Old 06-29-2014, 04:34 PM
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Re: power window troubles

Thanks.
Won't be able to get back to it for a couple of days.
I will net you know how I make out


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Old 06-30-2014, 07:01 PM
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Re: power window troubles

Ok. So got door skins off and realized that the terminals weren't labeled. I had to refer to wiring diagram and figure out the wire colors of the connections. Got power down but not up. Then figured out which wire made motor go up by process of elimination. It was the one that didn't make it go down
I then removed the wiring boot for the passenger front door. Lo and behold, there staring at me, was a grey wire that was broken. After making a temp connection, i now have a working back window.
I was planning on making a trip to the u-pull-it wrecking yard tomorrow, so i am adding a section of wiring harness to my list. I assume that there will be a section that is modular? If not at least i will have a big enough chunk that i can make connections inside of car rather than between door and body pillar.
Thanks for the advice.


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Old 06-30-2014, 07:04 PM
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Re: power window troubles

Lesson learnt.
I should have come here and asked the question before investing $70 in new motor/regulator assembly.


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