My sunroof has stopped working (was working fine last autumn)

I have checked that it is not stuck mechanically, as I can wind it backwards and forwards. Checked fuse, and relay, both OK. Bought a new switch as it seemed pretty creaky, but that hasn't fixed it either.

Any ideas?

McJohn

 

Do you have voltage getting to the motor? If so then it is likely the motor.

 

What year is your car? If it has the Hamilton and Palmer uprated alarm system, the sunroof and windows are controlled by an extra box under the bonnet to allow 'total closure' when you set the alarm. This has failed on my car so I traced the wiring and just fitted some shorting links.

 

I tried a rudimentary check with a bulb and wire, and there appeared to be no power to the motor, that's why I bought the switch, but still no joy.

However, in dismantling the old switch the first time, all the wire ends popped out of the connector block, and I only hope I got them all back in the right order. Anyone bright enough out there to be able to read a circuit diagram and tell me the colour order of the connector block, just to be sure.

Mine is a 1990 car, with the first H&P system, which as far as I know does not act on the sunroof. There certainly is no total closure system.

McJ

 

McJ, can you see the wires if you you just pop out the switch? If so, give a quick call and I'll take a look-see...

 

Mine stopped working several years ago (while the damn thing was open). If I remember correctly, there was an electrical connector in the roof lining, and that was the problem. My mechanic asked my permission to replace it with a standard block connector - which I gave - and it's been fine since.

 

Thank you JB, but as the switch is a pest to lever out I was leaving that as a last resort. I'll give you a call though, or perhaps we can compare wires when you are up here next.

DaveK, thanks, that is just the sort of thing I was looking for. I'll climb back into my contortionist outfit and get back into the roof lining again.

McJ

 

McJ,
If I remember correctly, the two wires that run to the motor from the switch are blue and yellow - the switch is supplied with +12V and earth, and applies the voltage in one direction to open the roof, and reverses it to close. Unzip the headlining, remove the soundproofing pieces and you should see a two pin moulded connector. If you have a meter, disconnect the plug and probe for voltage across the two wires whilst operating the sunroof switch - you may need another pair of hands at this point! - the polarity should reverse when you push the switch the other way. All this is made much easier if you're less than 4 feet tall and have double jointed knees and the ability to rotate your head like Linda Blair...
Barry

 

Suddenly, I'd like to see a photo of you outside of your car!

 

Did you figure this one out? My sunroof works but on occassion will not open or close. I haven't taken anything apart yet but will likely try the switch first.