SOLAR VENTILATION SYSTEM Solar Ventilation ECU Power Source Circuit

DESCRIPTION

For the solar ventilation system, the moon roof glass assembly (solar panel) generates electricity using sunlight to generate the required power.

The electricity generated by the moon roof glass assembly (solar panel) is sent to the solar ventilation ECU and used as the power source for the solar ventilation system.

WIRING DIAGRAM

A01JC6TE01

INSPECTION PROCEDURE

PROCEDURE


  1. INSPECT MOON ROOF GLASS ASSEMBLY (SOLAR PANEL)


    1. Leave the vehicle for 10 minutes in a location where the following conditions are met, and then measure the voltage.

      System Operation Requirements
      Items 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)

      Note

      To ensure stable generation of voltage by the moon roof glass assembly (solar panel), make sure to park the vehicle in a location where the system operation requirements are satisfied.

    2. A01JBH2E01
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Solar Ventilation ECU)

      Disconnect the solar ventilation ECU connector.

      CAUTION:

      The moon roof glass assembly (solar panel) generates electricity when exposed to a light source such as sunlight. If an inspection of the moon roof glass assembly (solar panel) is performed while electricity is being generated, work carefully in order to prevent an accidental short circuit or electric shock.

    3. Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Condition Specified Condition
      L22-11 (SBI) - L22-1 (GND) System operation requirements are met. 12 V or higher

    NG

    CHECK HARNESS AND CONNECTOR (SOLAR VENTILATION ECU - SOLAR PANEL, BODY GROUND) Click here

    OK

  2. READ VALUE USING INTELLIGENT TESTER


    1. Reconnect the solar ventilation ECU connector.

    2. Connect the intelligent tester to the DLC3.

    3. Turn the power switch on (IG).

    4. Turn the intelligent tester on.

    5. Enter the following menus: Body / Air Conditioner / Data List.

    6. Check the value(s) by referring to the table below.


      1. Check that the Solar Voltage value in the Data List is 10 V or higher.

        Air Conditioner
        Tester Display Measurement Item/Range Normal Condition Diagnostic Note
        Solar Voltage

        Solar panel voltage /

        10V les, 10V-11V, 11V-12V, 12V-13V, 13V-14V, 14V-15V, 15V-16V, 16V-17V, 17V-18V, 18V-19V, 19V-20V, 20V-21V, 21V-22V, 22V-23V or 23V ovr

        		 Actual generated voltage displayed

        System operation requirements are met Click here.
        OK
        10 V or higher

        Tech Tips

        If the Data List items are not displayed, inspect the communication circuit between the solar ventilation ECU and A/C amplifier Click here.


    NG

    REPLACE SOLAR VENTILATION ECU Click here

    OK

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Click here

  3. CHECK HARNESS AND CONNECTOR (SOLAR VENTILATION ECU - SOLAR PANEL, BODY GROUND)


    1. A01JBH2E01

      Disconnect the solar ventilation ECU connector.

    2. A01JCH1E01

      Disconnect the moon roof glass assembly (solar panel) connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      L22-11 (SBI) - R15-1 (+B) Always Below 1 Ω
      L22-1 (GND) - Body ground Always Below 1 Ω
      L22-11 (SBI) - Body ground Always 10 kΩ or higher
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Solar Ventilation ECU)
      *2

      Front view of wire harness connector

      (to Moon Roof Glass Assembly (Solar Panel))

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE MOON ROOF GLASS ASSEMBLY (SOLAR PANEL) Click here