Scheme 1
Memory Power Driver Seat Operation
The memory driver seat feature allows the driver to program a personalized seat position that can be recalled using the memory switches or remote entry key fob. The memory feature uses an array of potentiometers to determine the positions of the mirrors, pedals and driver seat. The Driver Seat Module (DSM) can store the settings for up to two drivers. When the driver presses the position recall button or uses the remote entry fob to unlock the vehicle, the motors adjust the mirrors, pedals, and the driver seat until the resistance of each potentiometer matches the memorized value.
Normal Operation
The passenger power seat switch is powered by battery voltage on circuit 1462 (RD/WH) and is supplied ground on circuit 1205 (BK).
The power seat should move quietly during operation. Some noise is acceptable.
The power seat movement should be smooth and the seat cushion should not rock during or after operation.
The power seat should travel fully horizontal (forward/rearward) and vertical (front up/down and rear up/down).
The passenger power seat switch is powered by battery voltage on circuit 1462 (RD/WH) and is supplied ground on circuit 1205 (BK). When pressed, the power seat switch supplies that voltage and ground to a power seat track motor to move the seat. When pressed in the opposite direction, the power seat switch reverses the polarity to that same power seat track motor, which moves the seat in the opposite direction. There are three power seat track motors that combine to move the seat horizontally (forward/reverse) and vertically (front up/down and rear up/down).
The driver power seat switch is powered by battery voltage on circuit 1001 (WH/YE) and is supplied ground on circuit 1205 (BK). When pressed, the power seat switch supplies the voltage and ground to the driver seat module (DSM). The DSM then supplies voltage and ground to the appropriate power seat track motor based on the inputs received from the seat control switch. When pressed in the opposite direction, the power seat switch reverses the polarity to the DSM, which moves the seat in the opposite direction. There are three power seat track motors that combine to move the seat horizontally (forward/reverse) and vertically (front up/down and rear up/down).
The following pinpoint test diagnoses a memory seat that does not operate in one or more directions when using the power seat switch. If the memory seat moves in all directions using the power seat switch, GO to PINPOINT TEST G .
The driver power seat switch is powered by battery voltage on circuit 1001 (WH/YE) and is supplied ground on circuit 1205 (BK). When pressed, the power seat switch supplies the voltage and ground to the driver seat module (DSM). The DSM then supplies voltage and ground to the appropriate power seat track motor based on the inputs received from the seat control switch. When pressed in the opposite direction, the power seat switch reverses the polarity to the DSM, which moves the seat in the opposite direction. There are three power seat track motors that combine to move the seat horizontally (forward/reverse) and vertically (front up/down and rear up/down).
Each power seat track motor includes a position sensor, which is a potentiometer. The DSM supplies a shared reference voltage and ground to each position sensor. This enables the position sensor to send a variable voltage back to the DSM to indicate the position of the power seat track motor. The DSM uses this information to return the seat to a stored preprogrammed position when pressing the memory set switch or a remote transmitter. Refer to Seats and the owner's literature for additional information on programming the DSM for storing memory seat, adjustable pedal, and adjustable mirror positions.
The following pinpoint test diagnoses a memory seat that does not operate correctly using the memory set switch. If the memory seat does not move in all directions using the power seat switch, GO to PINPOINT TEST F .
The power lumbar operation is incorporated into the power seat switch. The driver power seat switch is powered by battery voltage on circuit 1001 (WH/YE) and is supplied ground on circuit 1205 (BK). When the lumbar knob of the power seat switch is pressed, voltage and ground are supplied to the power lumbar motor. When pressing the lumbar knob in the opposite direction, the power seat switch reverses the polarity to the power lumbar motor, which moves the lumbar mechanism in the opposite direction.
The power lumbar operation is incorporated into the power seat switch. The passenger power seat switch is powered by battery voltage on circuit 1462 (RD/WH) and is supplied ground on circuit 1205 (BK). When the lumbar knob of the power seat switch is pressed, voltage and ground are supplied to the power lumbar motor. When pressing the lumbar knob in the opposite direction, the power seat switch reverses the polarity to the power lumbar motor, which moves the lumbar mechanism in the opposite direction.