System Description
- GENERAL
The climate control seat system creates cold or warm air to increase the comfort of seats that have become hot or cold.
The air is heated or cooled by the Peltier element on the seat cushion pad and seatback. The air is then sent to the seat cushion and seatback by the fan installed under the seat. The fan is operated by pressing the climate control seat switch.
The climate control seat switch has several modes that vary the quantity of air to be sent to the seat. There are 7 modes in total: 3 cooled air modes, 3 heated air modes and ventilation mode.
HINT:
When the highest level for cooled air operates for 15 minutes, the quantity of air falls 1 level.
- FUNCTION OF MAIN COMPONENT FUNCTION CHART
Component Outline Climate Control Switch Selects between modes: 3 cooled air modes, 3 heated air modes and ventilation mode. Seat Climate Controller (Thermistor) Detects surface temperature of seatback and seat cushion. Seat Climate Controller (TED) Cools and heats through function of Peltier element. Seat Climate Control Fan Motor Provides airflow to seatback and seat cushion upon receiving instructions from climate control ECU in accordance with climate control switch mode. Climate Control ECU - Controls system based on signals from temperature sensor and climate control switch
- While system is activated, only driver side, rear LH and RH side climate control ECU LH, RH output A/C signals.
- Monitors output amperage of climate control fan motor.
Front Seat Heater (seat cushion and seatback) Fast acting seat heater warms seat in initial stage of heating mode. Rear Seat Heater (seat cushion and seatback) Fast acting seat heater warms seat in initial stage of heating mode. - SYSTEM OPERATION SYSTEM OPERATION CHART
Function Outline Driver Seat Front Passenger Seat Rear Seat LH Rear Seat RH Normal control This system operates climate control fan motor located underneath seat to provide airflow to seat cushion and seatback. Airflow is warmed or cooled by Peltier element in climate controller. Air that flows to seat surface is distributed by passing through grooves that are provided on seat pad surface. Air is then dissipated throughout seat surface through slab urethane foam and is discharged through seat cover. ◦ ◦ ◦ ◦ Power ON full-power control This control outputs maximum voltage to climate controller and climate control fan motor for approximately 15 minutes only when conditions listed below have been met: - Engine switch position is on (IG)
- After climate control switch is turned ON, switch mode is subsequently turned to MAX WARM or MAX COOL within approximately 10 minutes.
◦ ◦ ◦ ◦ A/C output control Climate control seat ECU outputs A/C signal to driver seat ECU while it controls climate control seat system. Driver seat ECU sends demand signal for A/C control to A/C amplifier. ◦ ◦ ◦ ◦