Technical Description: Motors: Notes

Fig 1: LHD Car Motors - Circuit Diagram (1 Of 2)

Courtesy of SAAB-SCANIA OF AMERICA, INC.

The diagrams illustrate a LHD car

Each mirror has two motors and two potentiometers. The potentiometers output information on the position of the mirrors to the PMM control module.

Current is supplied to the motors from the switch when manually selected or from the PMM control module when selected from memory.

The motors are driven by the PMM control module to the positions the door mirrors take according to the relevant memory setting. The PMM control module reads the positions of the door mirrors with the aid of the four potentiometers.

The position adopted by the mirrors according to the memory setting is determined by the PSM control module, depending on which memory button (1, 2 or 3) is selected. On the basis of the information from the PSM control module, the PMM control module activates the motors to the right position.

The motors are driven one at a time by eight different combinations depending on the memory position to be taken. Each output on the PMM control module can be directed to B+ or ground.

Fig 2: LHD Car Motors - Circuit Diagram (2 Of 2)

Courtesy of SAAB-SCANIA OF AMERICA, INC.

The table below shows the status of the control module outputs for the various movements of the mirror motors.

MIRROR MOVEMENTS DESCRIPTION

Mirror movement	Motor, RH door vertical Pin 13	Motor, RH door horizontal Pin 14	Motor, LH door horizontal Pin 15	Motor, LH door vertical Pin 16	Motor, common output Pin 17
LH door out	B+	B+	Ground	B+	B+
LH door in	Ground	Ground	B+	Ground	Ground
LH door up	B+	B+	B+	Ground	B+
LH door down	Ground	Ground	Ground	B+	Ground
RH door out	Ground	B+	Ground	Ground	Ground
RH door in	B+	Ground	B+	B+	B+
RH door up	Ground	B+	B+	B+	B+
RH door down	B+	Ground	Ground	Ground	Ground