Technical Description: Motors: Notes

WARNING: This page is about a different car, the 2002 Saab 9-3. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Identifying Switch Operation

Courtesy of SAAB-SCANIA OF AMERICA, INC.

Fig 2: Motors - Circuit Diagram

Courtesy of SAAB-SCANIA OF AMERICA, INC.

The motors are controlled by the switches in the switch unit and are monitored by the PSM. When the motors are running, the control module detects the pulses from the Hall sensors, which are used for programming. To change the direction of rotation of the motors, the polarity of the motor is reversed.

The following motors can be controlled from the switch unit:

Electric motor (357Da) moves the seat forward or back
Electric motor (357Db) raises or lowers the seat front
Electric motor (357Dc) raises or lowers the seat rear
Electric motor (357Dd) changes the backrest angle.