9-3 Viggen Convertible (9400) L4-2.3L Turbo (B235) HO (2001)
When the ignition is turned ON, the control module outputs B+ to the microswitches from pin 30 and when the soft top storage is in its bottom position
on the right and left side, both microswitches are closed and the control module input is grounded.
Diagnostics
If the soft top storage gets caught so that one of the microswitches is "open", it will not be possible to operate the soft top. If an attempt is made to
operated it, the control module will send bus messages "Sound" and "Text information", whereby SID sounds an acoustic signal at the same time as it
displays "CHECK SOFT TOP STORAGE".
Switch In Main Cylinder
Switch In Main Cylinder
The control module operates the soft top with two main cylinders positioned by the soft top body mountings. During operation, the control module must
know when the hydraulic piston is in its respective end position (open/closed). Therefore, there is an end position switch in each end of the hydraulic
cylinder on the left side in the soft top mechanism.