Memory Seat/Mirror Module Diagnostic Modes

The Memory Seat/Mirror System provides an automatic driver's seat and outside mirrors return to one of two preset positions. Four seat motors, controlled by the Memory Seat/Memory Mirror Control Module, control the movement of the seat. The direction the motors turn depends on the supply voltage polarity sent to the motors. The driver selects from four seat movements (front height, rear height. forward/back, and recline) by operating the LH Seat Switch Assembly. When the switch assembly is operated, battery voltage is applied to the module's seat position inputs. This causes the module to output voltage to the seat motors, moving the seat to the commanded position.

Seat Motor Transmission Cable Position Sensors are used to "remember" the seat position. These sensors are potentiometers which are mounted to each motor's transmission cable. As the motor transmission cable rotates, the potentiometer resistance is varied. The seat position is determined by the voltage level sent to the Memory Seat/Memory Mirror Control Module by the position sensor. If the Memory Set button is pushed, and either Memory Select button (1 or 2) is pressed, the voltage level is stored to "remember" the seat position.

Although the Power Seat System may be operated with the Ignition Switch in any position, the memory function only operates when the gear selector lever is in the PARK position.

When the Position 1 and 2 buttons are pushed simultaneously, battery voltage is applied simultaneously to the Memory Seat/memory Mirror Control Module's memory I and memory 2 inputs, signaling the module to move the seat to the fully down and back position. The module applies voltage to front height. rear height, and forward/back LH Seat Motors until the seat is fully back and down. The recline motor is not moved during this operation. The easy exit function operates with the Ignition Switch at OFF.