HEATED STEERING WHEEL SYSTEM SYSTEM DESCRIPTION


  1. HEATED STEERING WHEEL SYSTEM


    1. The heated steering wheel heats the steering wheel assembly when the steering heater switch is operated.

    2. The heated steering wheel uses a thermistor inside of the steering wheel assembly to detect the heater temperature and maintain the set temperature.

    3. The heated steering wheel timer function turns off the heater after a predetermined period of time.

  2. HEATER CONTROLLER SYSTEM


    1. Operation description

      A000PB8E09

      1. When the power switch is on (IG), pressing the steering heater switch operates the heated steering wheel system. When the heated steering wheel system is operating, the steering vibration and heater ECU illuminates the indicator LED and sends current to the steering wheel heater unit of the steering wheel assembly. Pressing the steering heater switch again stops operation of the heated steering wheel system.

      2. A thermostat is installed in the steering wheel heater unit as a safety mechanism.

      3. The steering heater switch LED will turn off when either of the following occurs: 1) an open or short in the steering wheel heater unit thermistor continues for 2 seconds or more; or 2) the steering heater switch is pressed continuously for 10 seconds or more.

      4. The timer will turn off the heater 30 minutes after the steering heater switch was first turned on.

    2. Signal input / output description

      A000Q0VE09
      Signal Signal Name Function
      Input Thermistor input Input of voltage corresponding to heater temperature
      Input Operating switch input Input of power circuit operation estimate signal
      Output LED output Output of LED
      Output Drive current output Output of drive current