Power Driver Seat With Memory

The memory driver seat feature allows the driver to program a personalized seat position that can be recalled using the memory switch or a remote keyless entry (RKE) transmitter. There are 2 memory settings possible. The outside rear view mirror positions and the power adjustable pedals (if equipped) are also stored and recalled with the power driver seat positions.

The driver power seat is controlled by the driver seat module (DSM), if equipped. A new DSM must be configured after installation. For additional information, refer to MODULE CONFIGURATION . The driver seat also must be calibrated when a new DSM is installed or after the driver seat track is installed (if repaired or installed new). For additional information, refer to SEAT CALIBRATION .

The driver seat control switch provides voltage to the DSM when activated. The NEUTRAL position of each driver seat control switch position is a ground state through the seat control switch contacts. A voltage input causes the DSM to power the appropriate motor until the input is removed. Ground is the normal state of the motor circuits through the DSM and is not switched to control the motors. The DSM internally switches the appropriate circuit from ground to power for operating the motors.

As the seat is adjusted, the DSM constantly monitors the motor position sensors to record the current seat position. The DSM will remove power from the motor upon termination of the seat control switch input or if the DSM does not see movement from the motor by monitoring the position sensor. The DSM must be calibrated to the driver seat track for correct memory seat operation. For additional information, refer to SEAT CALIBRATION . Once the DSM is calibrated to the seat track, it will only allow movement within the calibrated range.

The DSM communicates diagnostic trouble code (DTC) and other information using the MS-CAN communication bus. It should be noted for diagnostics that because CAN bus communication is more robust and reliable than other methods, it may be possible to have limited module communication with one of the CAN bus circuits disconnected or shorted to ground. Refer to MODULE COMMUNICATIONS NETWORK for additional information concerning MS-CAN bus communication.