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Old 05-22-2014, 05:08 PM
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Power Window Issues

The all too familiar power window problems. So here is the breakdown of what I have done so far in trying to figure this one out.

Started with the driver door window jamming and needing to have a regulator and window motor changed. Did that and everything was working good for about 1.5 weeks. Then all the windows quit working on me (note before it was just the driver needing the motor). A quick search directed me to the broken wire issue on the driver side between the door. I did a temporary fix on them (2 broken wires) until I got me a soldering rod. After about a week of exposed wires at the rubber boot, the windows quit working again. Important to note that only the window buttons were not working. The driving mirror adjusting button worked and the auto lock button (to lock all doors) worked. I tried everything I knew to do, checking the wires again, fuses, and the connectors at the power window master control switch. Finally gave in and took it for an electrical diag. They said the Power window control Module was not working and could have shorted out from the exposed wires. Instead of a $350 fix i ordered one for $50 and did it myself yesterday. I have also soldered the wires between the driver door and put some electrical tape on them. I still have the same problems only now with the new module.

Forgot...after the temporary fix and the windows failed (shorted out), My over head display does not display the numbers just the compass with two dashes e.g NW--, My seat belt alert light on the dash board stays on, if I open the door while the car is on, the over head display will show the warning "driver's side door open" and will not go away after door is closed. If I put the key in the ignition, even without turning it, the alert ding with start beeping, same happens when I turn off the car, the ding will stop beeping when the key is taken out of the ignition.

Any help at the point is welcomed


Will try and get some photos..

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Old 05-22-2014, 10:36 PM
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Re: Power Window Issues

You said that you checked the fuses, but just to be sure, you checked fuse # 12 (50A) i the power distributio center under the hood? It is the fuse for all 4 power windows.
Did you try to operate each window from its own door switch? Driver door and driver rear door use the drivers door module for control, while the passenger door and passenger rear door use the passenger door module. Both door modules communicate with each other via the PCI data bus. Via the PCI data bus you can open and close a passenger side window from the driver door module. (just mention the PCI data bus here, since the EVIC information exchange goes via the PCI data bus as well) You can run a self test on the EVIC as follows: with ignition switch in off, press the C/T and reset buttons together and then switch ignition in on. As soon as you will see software information on the EVIC, you can release both buttons and the self test will run.
Besides both door control modules share the same power source, they also share the same ground. Eventhough you found already two broken wires in the drivers door boot, i would check again and see if there is not an other wire with problems. Not always the insulation breaks, so you will have to bend the wires a bit to feel if the wire core is intact
The chime when the key is in the ignition i think is normal. At least on my jeep it works the same, as soon as the key is in the barrel, the chime sounds until key is removed or engine started.
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Old 05-23-2014, 01:46 PM
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Re: Power Window Issues

Thanks. I did switch out the fuse #12 but will test it again/ replace. Let me try the self test on the EVIC as well. As far as the chime, I guessed I fixed mine unknowingly since it didnt do that before.

Also came across this which are most of the problems I am having.

Here are the symptoms you are probably experiencing with a PCI Bus issue:
The A/C blows normal volume but the air is not cold, because the compressor will not engage, even with the 'snowflake' or 'A/C' button pressed.
The instrument cluster backlighting is ON at all times (when the key is on), even with the headlamps OFF.

Power windows are inoperative.


The overhead console displays 'lines' instead of information.


The gauges are not reading correctly.


These symptoms may come and go. Often PCI bus problems are intermittent.
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Old 05-23-2014, 03:23 PM
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Re: Power Window Issues

Lesson learnt. Most complex scenarios solved by most simple solutions. It never occurred to me all this time to disconnect the -ve from the battery terminal for ~10 minutes. A/C works (clutch engaging), power windows work, EVIC back, CHIME IS GONE (with just key insertion), interior lights work as should.

It was that simple after ~ 2-3weeks of tweaking this, opening that, all it takes is a system reset??

Thanks @ FRANGO for the support/help
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Old 05-23-2014, 05:14 PM
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Re: Power Window Issues

The key in ignition chime should only sound with the key in ignition (obvious) and drivers door open.
Didn't you disconnect the battery during the module replacement and wires repair?
I hope that you have fixed the problem, because when its PCI bus related, it can return at any time.
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Old 05-23-2014, 06:04 PM
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Re: Power Window Issues

I never did disconnect the battery before. Should have. Hope I didn't "fry" anything since I was doing electrical repairs. Am hoping it's not the PCI bcoz it will be a PITA if it is.

As for the chime, it came on even with the door closed. Interior lights and cluster lights stayed on even after ignition off, door closed and alarm engaged. I had to turn off the interior lights at the steering wheel. All the way off which disengaged the alarm set beep when I closed with remote. But now working. Hopefully this helps other car repair newbies
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