Component Description

Seat Control Switch - Without Memory 

The seat control switch contains normally closed contacts which are grounded. When a specific adjustment position is selected, an individual circuit is switched to voltage.

Driver Seat Control Switch - With Memory 

The seat control switch is hard-wired to the DSM, which controls seat operation. When a specific seat adjustment position is selected, an individual circuit is switched to voltage.

Driver Front Seat Track -With Memory 

There are 2 front seat track bi-directional motors present on power front seat tracks. The horizontal (fore/aft) front seat track motor is the only seat track motor which can be serviced separately from the seat track assembly. The height track motor is serviced as part of the seat track assembly. The front seat track motors move the power seat forward/backward and up/down depending on the polarity of voltage supplied from the DSM. Each memory seat track motor contains a Hall-effect sensor which provides seat track position information to the DSM for setting/obtaining desired preset seat memory positions.

Driver Front Seat Track -Without Memory 

There are 2 front seat track bi-directional motors present on power front seat tracks. The horizontal (fore/aft) front seat track motor is the only seat track motor which can be serviced separately from the seat track assembly. The height track motor is serviced as part of the seat track assembly. The front seat track motors move the power seat forward/backward and up/down depending on the polarity of voltage supplied from the seat control switch.

Passenger Front Seat Track 

There are 2 front seat track bi-directional motors present on power front seat tracks. The horizontal (fore/aft) front seat track motor is the only seat track motor which can be serviced separately from the seat track assembly. The height track motor is serviced as part of the seat track assembly. The front seat track motors move the power seat forward/backward and up/down depending on the polarity of voltage supplied from the seat control switch.

Driver Front Seat Backrest 

The driver front seat backrest contains a bi-directional motor which is integral to the seat backrest frame assembly. If equipped with memory seat, the seat backrest motor contains a Hall-effect sensor which provides seat backrest position information to the DSM for setting/obtaining desired preset seat memory positions. The seat backrest motor moves the seat backrest forward/backward depending on the polarity of voltage supplied from the DSM (memory seat) or from the seat control switch.

Passenger Front Seat Backrest 

The front seat backrest contains a bi-directional motor which is integral to the seat backrest frame assembly. The seat backrest motor moves the seat backrest forward/backward depending on the polarity of voltage supplied from the seat control switch.

HVAC Module 

The HVAC module contains the heated seat control buttons. The HVAC module monitors the seat cushion temperature sensor and supplies heater current to the seat cushion and backrest heater mats until the desired setpoint temperature is reached. Once the setpoint temperature is reached, the HVAC module cycles the heater circuits on/off as required to maintain the setpoint temperature.

DSM 

The driver seat control switch and power memory seat motors are hard-wired to the DSM. The DSM controls the operation of the power memory seat. The DSM communicates on the MS-CAN. PMI is required on the DSM when a new module is installed. The DSM hard stop/soft stops must be set/reset any time a new DSM, driver seat track or driver seat backrest is installed.

Heater Mat 

The cushion heater mats are each equipped with a temperature sensor (thermistor) which provides feedback to the HVAC module. The cushion and backrest heater mats are connected in series.

Driver Front Seat Power Lumbar Assembly 

The driver front seat power lumbar assembly is mounted to the front seat backrest.