Mirror Motors

Each mirror has 2 reversible motors for position adjustment. The door modules control the reversible motors by supplying Battery Positive Voltage (B+) and ground to these motors.

When the mirror position switch has been activated in a direction that closes only 1 set of its contacts, the associated door module supplies battery positive voltage and ground to the appropriate circuits of both the vertical motor, and the horizontal motor to move the mirror in the 2 corresponding directions at the same time, i.e. Left-Up, Left-Down, Right-Up, or Right-Down.

When the mirror position switch has been activated in a direction that closes 2 sets of contacts, the associated door module supplies battery positive voltage and ground to only that motor which controls movements in the direction common to both contacts. For example, if the switch is activated to a direct Up position, both the Left-Up and the Right-Up contacts are closed. The direction common to the contacts is the Up direction. Since the DDSA interprets that as a 1 direction signal, the associated door module supplies battery voltage and ground only to its vertical motor to move the mirror UP.

Each reversible mirror motor is wired to its associated door module through 2 motor drive circuits. The door module reverses the polarity of the battery positive voltage and ground it supplies to these 2 circuits in order to move the motor in opposite directions.