Seats: Description and Operation

Current is always applied from DOME fuse to TERMINAL SYSB of the power seat ECU, from SEAT FR fuse to TERMINAL +B of the power seat ECU. TERMINAL 8 of the power seat control SW (Driver's seat) and TERMINAL 14 of the power seat control SW (Front passenger's seat).

With the ignition SW turned ON. current flows from PWR-IG fuse to TERMINAL IG of the power seat ECU.

POWER SEAT OPERATION (DRIVER'S SEAT)
Current is always applied to TERMINAL SYSB and TERMINAL +B of the power seat ECU so that power seat ECU is always ready to operate.

When the power seat control SW is pushed to the FRONT SLIDE position side, a signal is input into TERMINAL SLDF of the power seat ECU, the ECU operates and the current to TERMINAL +B of the power seat ECU flows from TERMINAL SLD+ of the power seat ECU to TERMINAL 3 of the power seat motor (Driver's seat slide control) to motor to TERMINAL 4 to TERMINAL SLD- of the power seat ECU to TERMINAL GND to GROUND, rotating the power seat motor so that the seat slides forward while the power seat control SW is being pressed.

To slide the driver's seat to the rear, pushing the power control SW to the REAR SIDE position side inputs a signal to TERMINAL SLDR of the power seat ECU. This causes the current flowing from the ECU to the motor to flow from TERMINAL SLD- of the power seat ECU to TERMINAL 4 of the power seat motor (Driver's seat slide control) to motor to TERMINAL 3 to TERMINAL SLD+ of the power seat ECU, flowing in reverse to front slide operation and causing the motor to rotate in reverse, so that the driver's seat moves to the rear.

The movement to other positions occurs similarly, so only the flow of current to each motor is shown:

FRONT VERTICAL CONTROL UP OPERATION
TERMINAL +B of the power seat ECU to TERMINAL FRV+ to TERMINAL 4 of the power seat motor to motor to TERMINAL 3 to TERMINAL FRV- of the ECU to TERMINAL GND to GROUND.

FRONT VERTICAL CONTROL DOWN OPERATION
TERMINAL +B of the power seat ECU to TERMINAL FRV- to TERMINAL 3 of the power seat motor to motor to TERMINAL 4 to TERMINAL FRV+ of the ECU to TERMINAL GND to GROUND.

REAR VERTICAL CONTROL UP OPERATION
TERMINAL +B of the power seat ECU to TERMINAL RRV+ to TERMINAL 4 of the power seat motor to motor to TERMINAL 3 to TERMINAL RRV- of the ECU to TERMINAL GND to GROUND.

REAR VERTICAL CONTROL DOWN OPERATION
TERMINAL +B of the power seat ECU to TERMINAL RRV- to TERMINAL 3 of the power seat motor to motor to TERMINAL 4 to TERMINAL RRV+ of the ECU to TERMINAL GND to GROUND.

HEAD REST CONTROL UP OPERATION
TERMINAL +B of the power seat ECU to TERMINAL H+ to TERMINAL 2 of the power seat motor to TERMINAL 1 to TERMINAL H- of the ECU to TERMINAL GND to GROUND.

HEAD REST CONTROL DOWN OPERATION
TERMINAL +B of the power seat ECU to TERMINAL H- to TERMINAL 1 of the power seat motor to TERMINAL 2 to TERMINAL H+ of the ECU to TERMINAL GND to GROUND.

LUMBAR SUPPORT CONTROL FRONT OPERATION
TERMINAL 8 of the power seat control SW (Driver's seat) to TERMINAL 4 of the lumbar support SW to TERMINAL 1 to TERMINAL 2 of the power seat control SW to TERMINAL 1 of the power seat motor to TERMINAL 2 to TERMINAL 1 of the power seat control SW to TERMINAL 2 of the lumbar support SW to TERMINAL 3 to TERMINAL 7 of the power seat control SW to GROUND.

LUMBAR SUPPORT CONTROL REAR OPERATION
TERMINAL 8 of the power seat control SW (Driver's seat) to TERMINAL 4 of the lumbar support SW to TERMINAL 2 to TERMINAL 1 of the power seat control SW to TERMINAL 2 of the power seat motor to TERMINAL 1 to TERMINAL 2 of the power seat control SW to TERMINAL 1 of the lumbar support SW TERMINAL 3 to TERMINAL 7 of the power seat control SW to GROUND.

Each position sensor in the seat detects the number of rotations of the relevant motor (Seat movement amount) and inputs it to the ECU. This makes it possible to store and recall the seat position by operating the position memory SW. The driving seat position is stored and recalled through communication control of the body ECU and door ECU etc.