OK.
I've got the common 'roof-alarm-continues-to-sound-even-though-the-boot-is-closed' fault. From other posts, I suspect a dodgy microswitch, but I cannot find the one which might be faulty. I've tried to figure out the control logic when the boot opens/closes - can anyone confirm or deny the following? I'm pretty sure its simple control logic based on valves directing fluid to hydraulic cylinders and microswitches to tell when the action is complete.
1. You pull the curtain across in boot, which triggers Microswitch1 mounted under one of the curtain catches (tells control system that it's safe to fold away the roof)
2. You release the internal catches (not sure if there are any switches there, can't see them)
3. You press the button to fold away the roof
4. The boot lid catches release at each side (powered by hydraulic cylinders 1& 2 in the boot lid, transmitted by 2 cables at each side)
5. The boot lid lifts up (also driven by hydraulic cylinders 1&2), until Microswitch 2 triggers (adjacent to the left hand hydraulic cylinder in the boot lid). This tells the control system that the lid is fully open, and safe to retract roof
6. Roof retracts and folds, operated by hydraulic cylinders 3 & 4, on either side, under the rear window
7. Roof continues to retract and fold away into boot, until another microwitch(es) is triggered, close to hydraulic cylinder 3 or 4 (?). I'm not sure about this bit, since I cannot see the switch(es).
8. Boot lid starts to lower, and Microswitch 2 goes off again.
9. When boot lid nears the horizontal position, the catches in the corners of the lid hit fixed pegs, rotate and trigger Microswitches 3 & 4. The white "jaws" are rotated to clamp the lid shut, pushed by the cables from hydraulic cylinders 1&2. I thought these microswitches actually initiated the action of the white jaws, but I think now that the clamps just follow on naturally as the cylinders reach the end of their stroke (with careful timing!)
10. NOW WHAT HAPPENS?!! Something must tell the control system that the boot lid is safely closed, so the hydraulic pump can stop trying to operate the cylinders, and a 'beep' tells you that all is well.
Is it simply that Microswitches 3&4 are triggered, by the boot lid catches? Mine are triggering OK, but the system does not realise that the boot lid is actually closed. I guess it is possible that one of these is faulty (switch lever is pressed, but electrical contact is not made).
Are there any other sad engineers out there who have managed to figure out the control logic and can give me a steer? I have to sell the car asap, and this is roof alarm is hardly a great selling feature!
Thanks!
[I left out the bit about the rear shelf, which flips down and up by a small hydraulic cylinder #5, and whose position is detected by yet another microswitch, close to the cylinder]