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Old 05-02-2006, 02:34 PM
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Exclamation Power windows, locks, and sunroof quit

I have a 95 altima and one day my power locks, power windows, and my sunroof just stopped working all together. None of the controlls on the other doors work. I've checked all of the fuses none are blown and I double checked the continuity to make sure they weren't faulty. I also checked the relays inside my car and under the hood. I just swapped them out with ones that work on my car already. Still I don't have any luck. If some one could give me a clue to what it might be give me an answer. It really sucks going to a drive up bank or fast food drive thru and have to get out! Not to mention having to lock each door by hand.
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Old 05-02-2006, 02:44 PM
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Fuses and relays have been checked, so that eliminates that. Have you checked the wiring and grounding to these items? Sometimes if a ground comes loose in one area it'll wreak havoc all over the car. I've had several "other brand" luxury cars that this has happend to me on. It took me forever to track it down.

But it is odd that all of those systems just failed, all at once.
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Old 05-03-2006, 07:12 AM
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to be honest I don't even know where to start at checking the wiring. I'm not much of a car guy and more of a give me your amp and I'll know what to do. Since the sunroof and the doors are messed up I assume I should try checking the wiring to the fuse boxes? You said that it could be a faulty ground connection somewhere are there any places I should search for a wiring problem. Not being a big car guy doesn't help that much I guess but any further insight would be appreciated thank you.
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Old 05-03-2006, 02:27 PM
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I'm not exactly sure where to look on the Altys as i just got my own. But im sure if you can get into the wiring going to the doors, and check all that, check the switches (a digital volt meter comes in handy for these things) and everything you'll find your problem.

Sorry i cant be more specific than that, its just some general knowledge i've picked up through my years of wrenching. Check everything possible, and once thats left, check the impossible.
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Old 05-03-2006, 02:40 PM
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I am 99% sure the problem is with the circuit breaker. It is located around the fusebox.

Here are some pictures of it,



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Old 05-03-2006, 06:06 PM
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Not to thread jack Soldier...my apologies...my power seat doesn't work anymore, it's the power button for the upper portion of the seat, the bottom portion however still works (back/forth and seat adjustment) I checked fuses and they all seem fine, could it just be the motor as my problem? All wiring seems legit as well
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Old 05-03-2006, 06:53 PM
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Quote:
Originally Posted by BLACK SE
Not to thread jack Soldier...my apologies...my power seat doesn't work anymore, it's the power button for the upper portion of the seat, the bottom portion however still works (back/forth and seat adjustment) I checked fuses and they all seem fine, could it just be the motor as my problem? All wiring seems legit as well
Yeap, it could only be the motor or the switch. I'll bet it is the motor.
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Old 05-03-2006, 07:24 PM
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^ now where is the motor located? I would assume under the seat, no?
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Old 05-03-2006, 07:26 PM
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Quote:
Originally Posted by BLACK SE
^ now where is the motor located? I would assume under the seat, no?
Yeap, it should be in there somewhere.
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Old 05-04-2006, 03:31 AM
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Alrighty thanks for the help. Curcuit breaker? Why would there be a curcuit break for just my power locks and windows including my sunroof as well? Does that mean there are more breakers behind the fuse box under the driver side dash? Sorry for being Mr. Stupid here, but should I just romove the fuse box to get to the breaker or something?
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Old 05-04-2006, 02:42 PM
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Very few people know of the existence of a circuit breaker inside their car.

The circuit breakers in a car are normally used for items that have an electrical power motor. The main power that feeds the circuit breaker comes from a higher amperage fuse in the engine fusebox. If you have power seats then you will most likely have a different circuit breaker to protect against overloading. Circuit breakers are meant to protect from circuit overloading. Circuit overloading is a point where the current through that circuit is extremely high. It will trip the circuit breaker but not burn a fuse. They work similarly like a home circuit breaker with the exception that the one in the car should automatically reset itself.

Power motors have strong torque. But a power motor cannot make a powered window travel beyond its stop point. If the power motor were continuously allowed to operate once the window has reached its maximum travel point it will consume higher amounts of current. That additional current will build up and begin to overheat the motor. The number one enemy of any motor is heat. Its compounding effect will kill a motor quickly. So the circuit breaker is really there to protect the power motors.

You can do a test, hold ALL the power window switches up until all the windows are rolled up. Continue to hold up the switches. At some point the circuit breaker will trip and reset itself once it cools down.

Hope this makes sense.

Last edited by jserrano; 05-04-2006 at 05:31 PM.
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Old 05-05-2006, 12:21 PM
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Well I found the circuit break and pulled it out. I checked the continuity of it and it's fine. All of my power locks, windows, and my sun roof don't work. So I've got to do a plan B. Would all of those items be on the same circuit breaker? If so would checking the voltage comming to the circuit breaker help. If I don't have voltage then it's the wiring. (I've checked all of the fuses and relaysunder the hood as well.) I'm still not sure where to start. I know it must be a loose connection or something. I just need a good place to start. Any help?
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Old 05-05-2006, 10:40 PM
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Well then if the circuit breaker is good you are going to have to check and see if battery power is reaching both sides of the circuit breaker.

The power to this part is basically from the BATTERY->FUSE->CIRCUIT BREAKER.
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Old 05-06-2006, 10:38 PM
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Okay I checked the voltages coming from the battery to the fuse that's good. And I checked the circuit breaker too. I found something really strange though about my relay. The contacts for the relay coil show continuity. Correct me if I'm wrong but shouldn't one be to ground and the other to power. Also the contacts for the switch part of the relay are wierd. I'm not sure what is goingh on here I think I'm going to have to give up and take it to a specialist. I just don't see what is going on with it.
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Old 05-06-2006, 10:40 PM
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also I forgot to mention right when I plug the relay in the latch clicks imediately...shouldn't it only work if I use the locks or windows?
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