Sunroof electrics

[Rusty]

One day I'll learn to leave things alone ...

With the head lining out I decided to cable tie the switch up on the roof so I still had a sunroof. However, it managed to short out on some exposed metal and now won't close.

• All other windows work and it will open so it's not the power relay under the dash.
• Everything else that remains in the car works so I don't think it can be a fuse, although I'm yet to check.
• I tested the switch and it appears to operate fine.
• There's some other gubbins by the mechanism, what is it, one looks like a relay.
• Anything else anyone can think of?

[mcandmar]

Nightmare. When you say it will open fine, are you talking about the sunroof or windows? i.e. does the sunroof move in either direction?

[Rusty]

Yeah, the sunroof will open (not tilt) but then won't close on the button (it will close manually and tilt manually), seems that the shorting out has fused/damaged something that closes/tilts it Not too many things that it can be, might just have to replace it...

[mcandmar]

Weird. I'd start with the relay as it seems to be the clever bit. There is also a cutout switch inside the motor which could have died, basically holding the relay off as it thinks its already closed.

Think this is the diagram you need http://www.s2central.net/S2_Schematics/E/E19.PDF

[Acidburn]

If your struggling for a motor or sunroof panel, I have a few lying around you can try if you let me know. Do you have the normal switch or dial sort as I have both.

[Rusty]

Normal switch, if you've got a spare I can try/buy then that'd be most useful

[Rusty]

Think I got the little bug'r. Micro switch that controls live feed is bust. Will see if Maplin have anything suitable but if any one has a replacemet motor unit then please give me a PM.

[Error404]

mine does this too Andy, can open it but not close it - the total closure does close it though
Tried 2 switches and another window / sunroof relay as well as the relay by the motor and no luck

be interested to know if your idea sorts it

[lind4hl]

Offtopic, but that is a sign from god rusty! you know what too do..

[Rusty]

Depends how the total closure is wired I guess. The micro switch in question interrupts the live feed to one side of the main switch. A short term work around is to bridge to the other live and apply some common sense.

[Rusty]

Offtopic, but that is a sign from god rusty! you know what too do..

:mischeif:

[Rusty]

Error, what you need to do is to check continuity between the yellow wire on the single pin plug and the black and blue/black wires on the 4 pin. With the ignition on and tehg SR closed, the back and blue/black should both be live. I've just bridged the black and blue/black together and all works fine although you have to stop pressing the button when the sunroof stops as the end cut-out doesn't operate in one direction.

Another test I found is, with the two single plugs disconnected and the SR closed but with the switch 4 way plug connected, put a continuity meter into the two single plugs and press the button, it should buzz both ways to indicate a completed circuit.

Quite a clever bit of kit all the wiring now I've had a look, the relay is nice too

[Error404]

good tips, cheers Bey

[Rusty]

Nay worries.