Windows are STILL dead - any Sparky types?

[Royalratch]

What does it do - does it affect electric windows as mine suddenly stopped working.




Sunroof works and Blue Relay in same area seems okay.

[Brianmoooore]

Feed to the sunroof and the windows are two sockets off of the same Green/blue wire. (Not blue/green!)

[Royalratch]

Sorry I meant Green with Blue stripe of course!

The sunroof works but the windows don't. They've been fine for 20 years and now nothing!

The loop in the pic I'm referring to has no voltage (checked with a 12V bulb!).

[Royalratch]

Loop now does have voltage but no still no windows...?

[Brianmoooore]

Check a wire hasn't fallen off the resettable circuit breaker - they're rather undersized 'lucar' connectors.

[Royalratch]

You mean the big cutoff switch that sits beside the gearshift?

[gareth]

that's the kiddie.
was fiddling with my rear windows earlier, debodging some horrid crimps inside the doors and i must have popped the circuit breaker somehow. i forgot it had one as it's never gone off before. oh well, i didn't want to do anything useful with the next 45 mins it took me to remember it was fitted and reset it!

[Royalratch]

I doubt it's that as I've messed checked it. Haven't checked the connections tho...

[davse30]

mine sticks was cleaning car otherday and caught the circuit breaker and windows stopped working had to mess with switch for ages to get them to work again

[Royalratch]

Not the switch and it's connected.

What else could be causing this?

[Royalratch]

Bump.

[Brianmoooore]

Is there power on the circuit breaker terminals at the times when the windows should work?
BULB!

[Royalratch]

I didn't check that man!

Brian, you'd be proud of me, I have a full 12V indicator with long 15amp wire soldered on and test prongs on either end - I'm like a pro!

[Royalratch]

So no power at the cut-off switch with meter or bulb check.
The sunroof is fine and is from the same feed?

Could the door switch pins affect this?

[Royalratch]

Bump.

[toby]

The door pin switches are only an additional earth and shouldn't stop them working with the ignition on. The door pin switch do come into play with the ignition off and the door open - the earth created by the door pin switch allows the windows to work when the door is open.

[Royalratch]

They don't work in any configuration.

Where can I start to look next as I've eliminated all wiring at the centre console and the accessory panel area...?

[toby]

I'm not being dismissive but have you seen this?
http://www.autolib.diakom.ru/CAR/BMW/19 ... /fig10.pdf

It might help. I can't help thinking you should double check that C101 connection - wasn't that disconnected and you reconnected?

Did the previous alarm you removed have a window closure facility as this can disable the windows unless that is removed too.

[Royalratch]

I haven't seen that thanks - will try my best to decipher but was wondering if anyone knows of the common faults and save me some aggro.

Previous alarm did not have window closure and C101 is sorted now

[Brianmoooore]

Does this car have an electric sun roof, and if so, does it work?

[Royalratch]

Power roof was retrofitted and it does work.

[Brianmoooore]

If it was fitted to factory spec, there should be a green/blue wire coming from pin 30 of a (usually) blue relay in the left front of the glovebox area, which goes to a connector where the green/blue wire feeding the sunroof plugs in.
The plug of the sunroof wire should have a second wire coming out of it, just an inch or so long, which ends in another socket. There is yet another green/blue wire plugged into this socket, and the other end of this wire is the one that arrives at the circuit breaker.
If the roof works, all must be good up to the point where it plugs in, which doesn't leave much to check between this point and the circuit breaker.

[Royalratch]

Thanks as ever Brian - I will check it against your text. The sunroof had no supply at the accessory panel so I plugged it into one of the single pole plugs there. Do these clarify?




What do the Red/Yellow wires with Black Female plugs do?

[Brianmoooore]

The red/yellow and the white black sweeping away to the left are the 'door open' and the 'ignition on' supplies for the windows/roof respectively.
The green/blue with them is the 'switched' feed coming back from the relay.
Where does the green/blue wire, exiting the bottom right corner, go?
Spare red/yellow is nothing to do with the windows or roof.

[Royalratch]

I'm not t the car now but must be the sunroof or windows - I will check.

I don't know but it has 12V when ignition is on.

[Brianmoooore]

I don't know but it has 12V when ignition is on.

??? That doesn't make sense. What has 12 volts with the ignition on?

[Royalratch]

Any of those green/blue wires in the pic.

[Brianmoooore]

The green/blues should all have 12 volts on them when the ignition is on, or when the front doors are open. If the roof works, it seems likely they have!

[Royalratch]

Swapped the feeds around between sunroof loom / window loom and all is normal. This is bizarre given they are both just 12V feeds.

[Brianmoooore]

Swapped the feeds around between sunroof loom / window loom

Shouldn't be possible! If the windows loom is plugged into the flying lead from the relay, there shouldn't be anywhere to plug the roof loom into, other than into itself.

[Royalratch]

One is a green/blue loop, the other is an open green/blue. They work one way but not the other?

[Brianmoooore]

Your car has had the roof retrofitted, so maybe the 'loop out' connection on your looms is on the windows loom instead of the roof, and you had managed to connect the windows loom looped back on itself.
It must have been like this since someone had messed up the wiring though, and was not a fault that developed, as I, and I expect most others, assumed! This makes a considerable difference when fault finding!!

[Royalratch]

I may well have mixed them up but I did try a few variations, I think this wire was also hacked into during the alarm butchery and when removing it I may have crossed a few things over.

You wouldn't believe how much stuff was back there!

[Driftben]

You have probably checked this but make sure the window cut off switch isn't stuck so it looks like it on but they arnt. Took me ages to figure mine sticks haha