Power Seats - Description

DESCRIPTION

NOTE: Driver seat shown in illustrations. Front passenger seat similar.

POWER SEAT SYSTEM

The power seat system allows the driver and front seat passenger (when equipped) to electrically adjust their seating positions using the power seat switches located on the outboard seat cushion side shield.

The standard driver and available passenger side eight-way power seat includes a six-way adjustable seat cushion track and two-way power seat back, along with and a four-way power lumbar support. The power seats can be electrically adjusted forward, rearward, up and down, seat front only up and down, recliner forward and rearward and lumbar support in, out, up and down. A memory driver seat option is available that automatically positions the driver power seat for two different operators.

An optional passenger side six-way power seat is also available. This seat includes a six-way adjustable seat cushion track, along with a four-way power lumbar support and a manual recline and fold flat feature. The optional power passenger seat can be electrically adjusted forward, rearward, up and down, seat front only up and down and lumbar support in, out, up and down.

The power seating system is also available with heated and ventilated seat options Heated Seats - Description.





The power seat contains reversible motors that are connected to worm-drive gearboxes that move the seat through a combination of screw-type drive units. On vehicles equipped with non-memory power seats, each motor contains a self-resetting circuit breaker to protect it from overload. On vehicles equipped with memory seat, the motor overload protection is a function of the Memory Seat Module (MSM). Consecutive or frequent resetting of the circuit breakers may damaged the motors.

The power seat track for this vehicle includes the following:

- Front Tilt Motor (1) - located on the front of the seat track.
- Rear Tilt Motor (2) - located on the front of the seat track.
- Fore/Aft Motor (3) - located on the rear of the seat track.





The power seat back for this vehicle includes the following:

- Lumbar Motors (1 and 3) - two motors located on the power lumbar mechanism, in seat back frame.
- Recliner Motor (2) - located on the power recline mechanism, on the side of the seat back frame.





The power seat system for this vehicle can include the following switches:

- Lumbar Switch (1) - located at the front of the outboard seat cushion trim panel. The power lumbar switch is a four-way rocker type switch. Lumbar support can be increased and decreased, and the support area can be lowered or raised for added driver comfort.
- Seat Position Switch (2) - located at the center of the outboard seat cushion trim panel. Vehicles may be equipped with driver only, or driver and passenger power seats. One seat switch is used for each front seat. The power seat switches are paddle-type levers. Movement of the seat cushions and backs mimics the action of the switch paddles. The driver power seat switch type (memory or non-memory) can be identified by the color of the switch electrical connector receptacle. Memory switches have a light gray connector receptacle and non-memory have a black receptacle.
- Memory Switch - located on the driver door trim panel (when equipped). The memory driver seat option automatically positions the power seat for two different drivers.

MEMORY SEAT SYSTEM





An electronic memory seat system is available on certain models. The memory seat system is able to store and recall all driver side power seat positions, driver side power rear view mirror position and power steering column position, when equipped. The system can be set for two different drivers. On vehicles with a factory installed radio connected to the Controller Area Network (CAN) bus, the memory system is also able to store and recall up to twenty radio station presets for two drivers (ten AM and ten FM). The memory system also will store and recall the last station listened to for each driver, even if it is not one of the twenty preset stations.

The memory system will automatically recall all of these settings when a button of the memory switch (1) located on the driver door trim panel (2) is pressed, or when the doors are unlocked using a FOBIK transmitter (if enabled). If the vehicle has more than two drivers the FOBIK transmitter recall of memory features can be disabled. This is a customer programmable feature of the EVIC.

The memory system also has a customer programmable easy exit feature. When the ignition switch is turned off, the driver seat will move rearward 55 millimeters (2.2 inches) or to the end of its travel, whichever occurs first.

The memory system includes the following components:

- Automatic Temperature Control (ATC) - located in the center of the instrument panel.
- Driver Door Module (DMM) - located in the driver door, behind the trim panel.
- FOBIC Transmitter - located in each key fob.
- Hall Effect Sensors - Drivers Mirror - located in the two drivers side view mirror motors. This hall effect sensor is used to provide a reference signal to the memory seat module, letting the module know the exact position of the mirror.
- Hall Effect Sensors - Seat Track - located in each of the power seat track motors. They are used to provide a reference signal to the memory seat module, letting the module know the exact position of the seat and recliner.
- Hall Effect Sensors - Steering Column - located in the two steering column motors. They are used to provide a reference signal to the memory seat module, letting the module know the exact position of the column.
- Memory Seat Module (MSM) - located underneath the driver seat.
- Memory Seat Switch - located in the driver door trim panel.
- Passenger Door Module (PDM) - located in the passenger door, behind the trim panel.
- Radio - located in the center of the instrument panel.
- Wireless Ignition Node (WIN) - located in the instrument panel.

Certain functions and features of the memory system rely upon resources shared with other electronic modules in the vehicle over the CAN bus. The CAN bus allows the sharing of sensor information. This helps to reduce wire harness complexity, internal controller hardware, and component sensor current loads. At the same time, this system provides increased reliability, enhanced diagnostics, and allows the addition of many new feature capabilities. A scan tool is required for diagnosis of these electronic modules or of the CAN bus.