SOLAR VENTILATION SYSTEM SYSTEM DESCRIPTION


  1. GENERAL


    1. The solar ventilation system ventilates the cabin when the vehicle is parked in an extremely hot environment. Ventilation is provided by the system operating the blower motor using electricity generated by the moon roof glass assembly (solar panel) installed on the roof.

      Tech Tips


      • The solar ventilation system operates when the following conditions are met:

        System Operation Requirements
        Item Condition
        Amount of sunlight

        A sufficient amount of sunlight is received by the moon roof glass assembly (solar panel).

        (The amount of sunlight on a cloudless day between 11:00 and 14:00 is typically sufficient for operation.)
        Moon roof glass assembly (solar panel) status The moon roof glass assembly (solar panel) is not in the shade
        No fallen leaves or dirt is present on the moon roof glass assembly (solar panel)
        Ambient temperature 20 to 40°C (68 to 104°F)

      • Shortly after the solar ventilation system has been activated, it may stop the blower motor if the sunlight is not sufficient even when the rest of the system operation requirements are met.

    2. Activation Control


      1. When the solar ventilation switch is turned on while the power switch is on (IG):

        The inlets will be changed to fresh air mode and the outlets will be changed to face mode approximately 1 minute after the power switch is turned off. In addition, the blower motor will be activated and start ventilating the cabin approximately 10 minutes after the power switch is turned off.

        Tech Tips

        In order to enhance ventilation efficiency, the inlets will be changed to fresh air mode and the outlets will be changed to face mode automatically when the solar ventilation switch is turned on while the power switch is on (IG).

      2. When the solar ventilation switch is turned on after the power switch is turned off:

        The blower motor will be activated and start ventilating the cabin approximately 10 minutes after the solar ventilation switch is turned on.

        Tech Tips

        Inlet and outlet modes will remain unchanged when the solar ventilation switch is turned on after the power switch is turned off.

    3. Stop Control


      1. When the solar ventilation switch is turned off or the power switch is turned on (IG), the solar ventilation system will stop operating.

        Tech Tips

        After the power switch is turned on (IG), both the inlets and outlets return to the mode that they were in before the power switch was turned off.

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  2. FUNCTION OF MAIN COMPONENTS


    1. The solar ventilation system consists of the following components:

      Component Function
      Moon roof glass assembly (solar panel) Generates power from sunlight and supplies system power to the solar ventilation ECU.
      Solar ventilation ECU

      • Activated by power generated by the moon roof glass assembly (solar panel).

      • Activates the solar ventilation system by receiving an on signal from the solar ventilation switch and an off signal from the vehicle power switch.

      • Sends a solar ventilation system condition signal to the A/C amplifier.

      • Operates the blower motor when the solar ventilation system is turned on.
      Solar ventilation switch Turns the solar ventilation system on or off.
      Solar ventilation relay Switches the power supply source for the blower motor between the auxiliary battery and solar ventilation ECU according to the power switch condition.
      Blower motor

      • Performs ventilation when the power switch is off based on instructions from the solar ventilation ECU.

      • Changes its speed according to the amount of sunlight received by the moon roof glass assembly (solar panel).
      A/C amplifier

      • Activates the air outlet control servo motor and air inlet control servo motor according to the signals from the solar ventilation ECU.

      • Receives solar ventilation system condition signal from the solar ventilation ECU and sends a solar ventilation system condition signal via CAN.
      Air inlet control servo motor Switches the inlets to fresh air mode based on signals from the A/C amplifier.
      Air outlet control servo motor Switches the outlets to face mode based on A/C amplifier signals.