Description of operation
WARNING: This page is about a different car, the 2001 Saab 9-3. However, it is still accessible from the selected car via links, so may be relevant.
The electric operation is powered by the +30 circuit from fuse 11. The power supply is relay-controlled and the relay is grounded via pin 3 in TWICE.
TWICE powers the passenger seat by grounding the relay when the ignition is in position ON or one of the front doors is opened. The seat can be adjusted for 30 seconds after the door has been closed but not while the starter motor is cranking.
When the ignition is ON (+15 and +54 circuits), power is provided permanently to the switch in the passenger seat. When the ignition is OFF and a front door is open, power is supplied for 20 minutes. If the door is shut and then opened again, power is supplied for a further 20 minutes.
The switch controls the following motors:
- electric motor (357Pa) moves the seat forward or back
- Electric motor (357Pb) raises or lowers the front of the seat
- Electric motor (357Pc) raises or lowers the rear of the seat
- Electric motor (357Pd) changes the backrest angle.