Control module power supply: +30
WARNING: This page is about a different car, the 2003 Saab 9-3 and 2002 Saab 9-3. However, it is still accessible from the selected car via links, so may be relevant.
The main relay, fuel pump relay and fuse 17 are supplied with +30 from maxi fuse 2. Control module pin 23 is supplied from fuse 28.
The control module uses +30 for its memory.