3.SYSTEM OPERATION
The front power seat's adjustment and position memory are shown in the chart below.
SYSTEM OPERATION
For the memory function, first, memory switch operation is transferred from the driver door ECU to the
driver seat ECU via the multiplex communication line. Then, either the seat position is recorded in
memory or a previously recorded seat position is recalled.
HINT:
Use this procedure to troubleshoot the front power seat control system with memory function.
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1.VEHICLE BROUGHT TO WORKSHOP
2.CUSTOMER PROBLEM ANALYSIS CHECK AND PROBLEM SYMPTOM CHECK (SEE
CUSTOMER PROBLEM ANALYSIS CHECK
)
3.CHECK COMMUNICATION FUNCTION OF LARGE-SCALE MULTIPLEX
COMMUNICATION SYSTEM (BEAN)
seat headrest raises and lowers.
Seat position sensorIs built in each seat adjuster and sends seat position data to driver seat
ECU so that it can detect seat positions at all times.
Seat control switchBased on switches operated, seat adjuster signals are input into driver seat
ECU and seat is adjusted accordingly. Lumbar support adjustments are
also done.
Set switch Memory switchWhen set switch and memory switch are pressed simultaneously, SET, 1, 2
or 3 switch is input to driver door ECU and driver side's seat position is
recorded. Then, when memory switch is pressed, SET, 1, 2 or 3 switch is
input to driver door ECU and driver side's seat position changes according
to memory.
Seat Adjustment FunctionDriverFront Passenger
Fore-and-Aft SlidePower and memoryPower
RecliningPower and memoryPower
Cushion SlidePower and memory-
Front Vertical HeightPower and memoryPower
Rear VerticalPower and memoryPower
Dual Lumbar SupportPower-
Single Lumbar Support-Manual
Headrest Fore-and-AftManualManual
Headrest HeightPower and memoryPower
