System Description
BCM can operate regardless of the ignition switch position, because battery power is supplied at all times to power seat switch.
SLIDING OPERATION
While operating the sliding switch located in power seat switch, sliding motor operates and makes the seat front and back position adjustment possible.
RECLINING OPERATION
While operating the reclining switch located in power seat switch, reclining motor operates and makes the seat back forward and backward position adjustment possible.
LIFTING OPERATION
While operating the lifting switch located in power seat switch, lifting motor operates and makes the seat cushion up and down position adjustment possible.
Scheme 76
Component Description
| Item | Function |
|---|---|
| BCM | Supplies at all times the power received from battery to power seat switch |
| Power seat switch | Built-in reclining switch, sliding switch and lifting switch, and controls the power supplied to each motor |
| Reclining motor | With the power supplied from power seat switch, operates forward and backward movement of seatback |
| Sliding motor | With the power supplied from power seat switch, operates forward and backward slide of seat |
| Lifting motor (front/rear) | With the power supplied from power seat switch, operates up and down movement of seat cushion |
COMPONENT DESCRIPTION
- While operating the side support switch, the pump located inside side support unit operates and adjusts the air pressure in seat cushion and seatback side support.
- It is possible to soften the side support by allowing some air to escape or by deflating the solenoid located inside side support.
- It is possible to adjust seat cushion and seatback differently while inflating or deflating solenoid located in side support unit.
Scheme 77
| Item | Function |
|---|---|
| Side support switch | With a built-in cushion side and seat back side, and controls the power supplied to pump and to each solenoid. |
| Side support unit | Built-in pump, pump relay, and solenoid, and operates when pressing ON/OFF on side support switch. |
COMPONENT DESCRIPTION
- Lumbar support can operate regardless of the ignition switch position because battery power is supplied to it at all times.
- While operating the lumbar support switch, lumbar support motor operates which allows forward and backward operation of seatback support.
Scheme 78
| Item | Function |
|---|---|
| Lumbar support switch | Controls the power supplied to lumbar support motor |
| Lumbar support motor | With the power supplied from lumbar support switch, operates forward and backward movement of seatback support device |
COMPONENT DESCRIPTION
Scheme 79
- The climate controlled seat system is controlled by the climate controlled seat control unit.
- Operation of the climate controlled switch sends heated or cooled airflow and adjusts the seat temperature.
- One thermal electric device (TED) unit is installed in each seat cushion and seatback. The device heats or cools, sends airflow to the seat surface, and adjusts the seat temperature.
- The thermal electric device (TED) is a heat exchanger that has a function to heat or cool the airflow from the climate controlled seat blower motor. (By changing the direction of the current from the power supply, the device takes or gives heat, and adjusts heat exchange process depending on voltage.
Note. The climate controlled seat blower maintains low speed for approximately 60 seconds after turning the climate controlled seat switch.
| CAUTION | The thermal electric device has a dual-climate function that allows one side to operate at a high temperature and the other to operate at a low temperature simultaneously. Before starting the work, always turn OFF the switch and check that the thermal electric device is cold. |
| Item | Function |
|---|---|
| Climate controlled seat relay | Supplies power to the climate controlled seat control unit in accordance with the key switch position that is ON or OFF |
| Climate controlled seat control unit | Installed in the seat cushion backside and controls the climate controlled seat blower motor, seatback thermal electric device, and seat cushion thermal electric device in accordance with the input signal |
| Climate controlled seat switch | Installed in the center console and transmits signals to climate controlled seat control unit in accordance with the HEAT (heated airflow) or COOL (cooled airflow) switch operation and the temperature switch operation |
| Climate controlled seat blower motor | Installed in the seat cushion backside and sends the airflow to the seatback thermal electric device and seat cushion thermal electric device in accordance with the control from the climate controlled seat control unit |
| Seatback thermal electric device | Installed in the seatback backside and heats or cools the airflow from the climate controlled seat blower motor in accordance with the control from the climate controlled seat control unit |
| Seat cushion thermal electric device | Installed in the seat cushion backside and heats or cools the airflow from the climate controlled seat blower motor in accordance with the control from the climate controlled seat control unit |
COMPONENT DESCRIPTION
Description
Installed in the center console and transmits signals to climate controlled seat control unit in accordance with the HEAT or COOL switch operation and the temperature switch operation.
Installed in the seatback backside and heats or cools the airflow from the climate controlled seat blower motor in accordance with the control from the climate controlled seat control unit.
Measures seatback temperature.
Installed in the seat cushion backside and heats or cools the airflow from the climate controlled seat blower motor in accordance with the control from the climate controlled seat control unit.
Measures seat cushion temperature.
- Sends air flow to the seat cushion and seatback.
- Turns ON the indicator that indicates the operating status of climate controlled seat HEAT or COOL mode.
OPERATION PROCEDURE
- Connect both battery cables. NOTE: Supply power using jumper cables if battery is discharged.
- Turn the push-button ignition switch to ACC position. (At this time, the steering lock will be released.)
- Disconnect both battery cables. The steering lock will remain released with both battery cables disconnected and the steering wheel can be turned.
- Perform the necessary repair operation.
- When the repair work is completed, re-connect both battery cables. With the brake pedal released, turn the push-button ignition switch from ACC position to ON position, then to LOCK position. (The steering wheel will lock when the push-button ignition switch is turned to LOCK position.)
- Perform self-diagnosis check of all control units using CONSULT-III.