Hi Guys maybe you can help, my brother is having a problem with a 1996 3l R Diamante saloon, on the drivers window only, if he pushes the switch to send it down if he lets it go at 1/2 way the windows then drives all the way to the bottom, and stays there,if he pushes the switch to go back up nothing happens at all, if he trys in 1/2 an hour the windows moves up an inch at a time, and you have to release the switch and try again and it moves another inch up, the local Garage has replaced the motor and switch assembly but it is still the same problem any help appreciated, it's not proving to be a lot of fun after you put the window down to swipe an exit card at a car park and its raining.

Best regards
lambo

take the car back with your reciept of the work done
back to the local gararge

the switch they fitted is faulty or the motor or both

that switch controls the motor and the window up and down movement

the motor is a metal square drive so will not strip

also use a dry lube on the windows runner guides

Thanks for the help on that, so what your saying is the motor is controlled directly by the switch, by the way it was failing we started to suspect there may have been a ETAC or some other computer having its say, does anyone have a wiring diagram of this car that would include the door wiring, i say this because i think the switch and motor have been replaced with new items twice, maybe the computer is in some way connected to the window operation????

Best Regards
Lambo

the window wiring is connected only to the fuse box
no relays needed nothing special in the wiring system for the power windows
connection plug is inside the car
the whole wiring loom goes through the door between the hinges

if all the other windows are worring correctly


gararge is either not fitting the parts as they say they are
the parts being to the drivers door are being fitted incorrectly
or the fitted parts are faulty
fitter should be checking the voltage on the wiring is correct also

Its possible that the wire supplying current is broken where it goes from the body to the door and that the ends are touching some of the time giving poor/intermittent operation.

Rob

Well, obviously this is a pretty old thread, but I'm going to add my two cents here because... Been there, done that.
There is (for lack of a better term) a little metal thermostat inside the motor itself that when things get too hot or pull too many amps, it clicks open causing the motor to quit. Once it cools down, it closes, allowing the motor to operate again.
I don't know about yours, but ours would sometimes go back up on it's own with nobody around. I did notice that it tended to trip more when using the auto-down feature as opposed to gently putting it down part way.

Necessity caused me to literally pull apart a couple of motors and "rebuild" one. It worked for awhile, but it's acting up again. I suggest getting a new motor/regulator.

jayeddie

thats worthwhile feed back

didnt know of the thermo bit

Thanks for the tip, my brother still has the problem, i think he has spent so much before i heard about the problem, he has given up and is now looking for a different car.

Regards
lambo

Thanks, dirty hands, it's not that often that I actually have something to contribute. It's nice to hear that it's appreciated.

LAMBO: Sorry to hear that he's giving up on it. I wish I had the opportunity to drive ours (it's actually my wife's car) more. Unfortunately I usually just get to do the repairs. But I can see where it would get really expensive if I had to pay someone to do the work.

I know this post is pretty old, but I too have a couple of cents to offer.
I've got a 96 Diamante Espada 2.5 that has the same problem with the window(s). If someone with a scanner resets the ecu or disconnects the battery, one, some or all windows exhibit this weird behavior. Window(s) winds up about 25mm at a time and if you keep pressing the button, it will eventually wind all the way up.
I've also got a 2nd problem where it feels like the car is running on 5cyclinders. In fact, the worse the window problem is, the smoother the car runs and visaversa.
Does this sound like you??

Hi mrmouse62 , My brother has given up with the problem we suspect the window switch panel in the door, as at pickapart we found it has its own processor inside, we might buy one and see if it fixes it.My brothers car now has a different problem it selects the wrong gear for the auto and at 50 kph will randomly shift into 1st gear, trans has already been changed, i suspect the main computer has issues.
With your problem have you looked at the capacitors on the main ecu, they can leak and cause all sorts of problems., as above.

Regards
lambo

LAMBO
it will be the TCU computer for the auto
you are getting good with magnas :clap:

LAMBO there is a TSB technical service bulletin # TSB-96-42A-021 by Mitsu on this condition where the driver's door window fails to raise after being lowered with the auto down switch. My wagon exhibited the same symptom and I also replaced components to no avail, very expensive. jayeddie has it correct, the problem stems from the over current protection circuit. Mitsu wants you to remove the drivers doorswitch control unit and file down the current sencing bar to lower the stall current sensing range of the module. It works. I tried it on an extra door control switch I had brought. I'm new to this computer stuff and I'm sorry I don't know how to attach a copy of the TSB for your information but I will try at another time. wagonman93

Thanks Wagonman93, I will see if i can find the TSB, he still has the car can't afford another, just spent a small fortune getting the Auto sorted out, if we find the TSB and it works i will let you know.
It does seem this model has issues if the battery goes flat the windows don't do as their told, and has to take it to the dealer for a reset, but the windows still play up.

Best Regards
Lambo

LAMBO I am attaching a copy of the TSB that mayhelp with that stuck window condition. wagonman93

Thanks for attaching that TSB i will pass it on to my brother, will propably be a couple of weeks before i here back from him, but hey its worth a try.

Best Regards
Lambo