Technical Ducato JTD 2.8 Windows not working.

[rednwhitevan]

Ok, I've read through some threads here already but still stuck
Both windows stopped working
all fuses, yellow 20 amps replaced. and 7.5.
I actually have a parts van so I have been able to swap parts and have swapped control box and door switches
have replaced 80amp fuse on battery fuse block.
not sure where to look next.
door locks and electric windows still working.
nothing from windows, no relay clicks or sounds just dead both sides.
any ideas?

 

[rednwhitevan]

Just done a voltage check on two 20 amp fuses bottom right in fuse box on drivers side, RHS, no voltage with ignition on. My understanding is that these fuses are direct path back to 80 amp fuse on battery terminal?

 

[rednwhitevan]

found my owners handbook with fuse numbers. have no voltage on F47 and F48 but to have voltage on F35 (7.5 amp)

 

[Communicator]

Have you checked for power to RH fusbox B101, at large connector "A"?

Attached is an annoted copy of diagram, and my own presentation of B101, which while customised is still applicable.

 

[rednwhitevan]

Have you checked for power to RH fusbox B101, at large connector "A"?

Attached is an annoted copy of diagram, and my own presentation of B101, which while customised is still applicable.

I am reading your diagrams and trying to understand what large connecter A is? my next step may be to unbolt that fuse box

 

[rednwhitevan]

I am just looking at the circuit diagram again, the fact I have voltage on that 7.5 amp fuse F35 tell me the ignition is ok. The control box if opened is just a box full of relays, with an integrated circuit and some diodes to control things possibly the central locking to which there is only one tap. regardless i have swapped a good part out with no success. with those two 20 amp fuses having no voltage, the diagram tells me there must be a break in cable between fuse box B101 and the 80 amp fuse. This is a heavy cable coming off of that battery fuse block so I can see myself pulling my dash apart unless I am missing something?

 

[rednwhitevan]

Ok up date. checked main positive feed which plugs into front of drivers side fuse block found no voltage. re inspected battery fuse block and found id left a lead off. I think original fuse must have just had bad contact because I have re used it.
Now I have passenger window working but just a relay click from control module when engaging driver side window switch. frustrating. I may need to check door motor.

 

[rednwhitevan]

further update, giving the door a few good slams gets the window working on and off so seems a have a bad contact somewhere within the door or motor.. common problem? I hope it is in the door and not a bad connector under dash

 

[varesecrazy]

further update, giving the door a few good slams gets the window working on and off so seems a have a bad contact somewhere within the door or motor.. common problem? I hope it is in the door and not a bad connector under dash

Always worth checking the loom where it flexes at the door hinge, especially as it's the Drivers door giving issues
( opens and closes twice as often)

 

[rednwhitevan]

Always worth checking the loom where it flexes at the door hinge, especially as it's the Drivers door giving issues
( opens and closes twice as often)

yeah I've just opened the door and window went up and down 3 times then stopped again. pulled loom grommet out of door and pulled the loom around in and out without any change. Slammed the door again hard a few times back she comes. then stops again, So I don't know what connections are inside the door but I think it must be something to do with the motor. a bit of a pain to pull the door skin off.

 

[Communicator]

yeah I've just opened the door and window went up and down 3 times then stopped again. pulled loom grommet out of door and pulled the loom around in and out without any change. Slammed the door again hard a few times back she comes. then stops again, So I don't know what connections are inside the door but I think it must be something to do with the motor. a bit of a pain to pull the door skin off.

The only relevant connectors inside the doors are those to the motors, and switches. When replacing a door mirror, I managed to make a surgical incision in the door skin, and repair with tape, when connector had been replaced.

If needing to burrow into the door, may I suggest that eLearn for the x244 is a useful source of information. As a minimum you would need a Windows PC + Optical Drive to run it.

 

[rednwhitevan]

The only relevant connectors inside the doors are those to the motors, and switches. When replacing a door mirror, I managed to make a surgical incision in the door skin, and repair with tape, when connector had been replaced.

If needing to burrow into the door, may I suggest that eLearn for the x244 is a useful source of information. As a minimum you would need a Windows PC + Optical Drive to run it.

Yes I have been there before with the Elearn thing from memory you need to run XP to read it. rather irritating experience I found when all I wanted and still want is a full circuit diagram. That is something that you should be able to obtain from Fiat, but here in Australia at least they will supply you with nothing. They want you to take your van into their workshop and that's that.

 

[Communicator]

Yes I have been there before with the Elearn thing from memory you need to run XP to read it. rather irritating experience I found when all I wanted and still want is a full circuit diagram. That is something that you should be able to obtain from Fiat, but here in Australia at least they will supply you with nothing. They want you to take your van into their workshop and that's that.

Yes, and in your country that could be many hours away.

I previously supplied you with a pdf copy of the appropriate diagram, E3035, extracted from my own copy of eLearn. I have spent a considerable amount of time preparing that and many similar drawings for my own reference, but I am happy to share individual diagrams when they may help. If you want more, you could try here. Be warned that some of the drawings are unreadable, and others contain errors. I particularly suggested eLearn, as it also contains a procedure for removing the window motor assembly. An advantage of using eLearn, is that when scrolling down from a diagram, the associated connector pinouts and wiring details are available. There is a lot more and forum member @Ocwobio wobio described using eLearn as, "like peeling the layers off an onion".

 

[rednwhitevan]

Just an update for those that are stuck. Ok, so the main problem I had was the driver side window was intermittent, if you are having the same problem I had you could probably manually grab the window and pull in up or down if possible to reengage the gear of the motor. if it works again you likely have the same problem I had which was just a dry mechanism. Solution to this, remove the winder and motor assembly, pull the window down 3/4 and remove a clip form bottom of glass, pull glass up and tape so it doesn't fall. winder assembly takes a little bit of force to remove through large hole at an angle but it will come out. take the whole thing with motor and degrease it. test the motor with 12v for response. remove access plate from gear box, scrap out old grease that will have worked its was away from pulleys. try and clean things out as much as possible without disassembly I didn't want to attempt that. Get everything clean cables clean and then re load gear box with white grease, also grease the track and cable. Ideally you will remove window and clean and deburr window track and lube with silicone spray and rubber reconditioning. re assemble everything and you should have a good window. the motors in these things are quality parts so its more likely poor lubrication causing problems but there is a plastic wheel that engages with the motor drive that could shred. If you haven't had these problems yet, its a good idea to do some preventative maintenance on this mechanism as the grease in my gear box had worked its way out of the mechanism and was no longer working. also your windows will get scratched up if you don't clean your window tracks. hope this helps someone cheers.