SOLAR CHARGING SYSTEM ECU Power Source Circuit

DESCRIPTION

The power necessary for operation of the solar energy control unit can be provided by the solar roof, solar battery or auxiliary battery.

WIRING DIAGRAM

B006II3E02

CAUTION / NOTICE / HINT

CAUTION:


  • B006HUP

    Before performing any of the following operations, take precautions to prevent electric shock by turning the power switch off, wearing insulated gloves, and removing the service plug grip.


    • Inspecting the high-voltage system.

    • Disconnecting the low voltage connector of the inverter with converter assembly.

    • Disconnecting the low voltage connector of the HV battery.

    • Disconnecting the low voltage connector of the electric vehicle charger assembly.

    • Disconnecting the low voltage connector of the solar energy control unit.

  • B006IQP

    To prevent electric shock, make sure to remove the service plug grip to cut off the high voltage circuit before servicing the vehicle.

  • B006HQC

    After removing the service plug grip from the HV battery, put it in your pocket to prevent other technicians from accidentally reconnecting it while you are working on the high-voltage system.

  • B006IVPC02
    *a Without waiting for 10 minutes

    After removing the service plug grip, wait for at least 10 minutes before touching any of the high-voltage connectors or terminals. After waiting for 10 minutes, check the voltage at the terminals in the inspection point in the inverter with converter assembly. The voltage should be 0 V before beginning work.

    Click here

    Tech Tips

    Waiting for at least 10 minutes is required to discharge the high-voltage capacitor inside the inverter with converter assembly.

Note

After turning the power switch off, waiting time may be required before disconnecting the cable from the negative (-) auxiliary battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) auxiliary battery terminal notices before proceeding with work.

Click here

PROCEDURE


  1. CHECK DTC OUTPUT


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Enter the following menus: Health Check.

    4. Check DTCs.

      Result
      Result Proceed to
      DTCs are not output. A
      DTCs are output. B

    5. Turn the power switch off.


    B

    GO TO DTC CHART

    A

  2. CHECK SOLAR ENERGY CONTROL UNIT (AMD TERMINAL VOLTAGE)

    CAUTION:

    Be sure to wear insulated gloves.


    1. Check that the service plug grip is not installed.

      Note

      After removing the service plug grip, do not turn the power switch on (READY), unless instructed by the repair manual because this may cause a malfunction.

    2. Remove the rear seat cushion assembly LH.

      Click here

    3. B006IB2N01

      Disconnect the N73 solar energy control unit connector.

    4. B006IM3N01

      Disconnect the N71 and N72 solar energy control unit connectors.

    5. Connect the cable to the negative (-) auxiliary battery terminal.

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

      B006IACC14
      *a

      Rear View of wire harness connector

      (to Solar Energy Control Unit)

      		 - -
      Standard Voltage
      Tester Connection Condition Specified Condition
      N73-4 (AMD) - N73-9 (E01) Always 11 to 14 V

    7. Disconnect the cable from the negative (-) auxiliary battery terminal.

    8. Reconnect the N71 and N72 solar energy control unit connectors.

    9. Reconnect the N73 solar energy control unit connector.

    10. Install the rear seat cushion assembly LH.

      Result
      Proceed to
      OK
      NG

    NG

    CHECK FUSE (AMD2) Click here

    OK

  3. CHECK SOLAR ENERGY CONTROL UNIT (VSOP TERMINAL VOLTAGE)

    CAUTION:

    Be sure to wear insulated gloves.


    1. Park the vehicle in an area where the solar radiation will be steady.

    2. Ensure that the following vehicle conditions are met.

      Weather Clear or mostly clear and sunny
      Time Between 11:00 and 14:00
      Place An area where sunlight strikes the solar roof directly

      Tech Tips


      • Make sure no part of the solar roof is shaded.

      • If the solar roof is dirty, clean it.

    3. Disconnect the cable from the negative (-) auxiliary battery terminal.

    4. Remove the service plug grip.

      Click here

    5. Remove the rear seat cushion assembly LH.

      Click here

    6. B006IB2N01

      Disconnect the N73 solar energy control unit connector.

    7. B006IM3N01

      Disconnect the N71 and N72 solar energy control unit connectors.

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

      B006IACC13
      *a

      Rear view of wire harness connector

      (to Solar Energy Control Unit)

      		 - -
      Standard Voltage
      Tester Connection Specified Condition
      N73-5 (VSOP) - N73-7 (VSON) 27 V or higher

    9. Reconnect the N71 and N72 solar energy control unit connectors.

    10. Reconnect the N73 solar energy control unit connector.

    11. Install the rear seat cushion assembly LH.

    12. Install the service plug grip.

    13. Connect the cable to the negative (-) auxiliary battery terminal.

      Result
      Proceed to
      OK
      NG

    NG

    CHECK CONNECTOR CONNECTION CONDITION (NO. 1 ROOF WINDOW GLASS SUB-ASSEMBLY CONNECTOR) Click here

    OK

  4. CHECK SOLAR ENERGY CONTROL UNIT (VBS TERMINAL VOLTAGE)

    CAUTION:

    Be sure to wear insulated gloves.


    1. Check that the service plug grip is not installed.

      Note

      After removing the service plug grip, do not turn the power switch on (READY), unless instructed by the repair manual because this may cause a malfunction.

    2. Remove the rear seat cushion assembly LH.

      Click here

    3. B006IB2N01

      Disconnect the N73 solar energy control unit connector.

    4. B006IM3N01

      Disconnect the N71 and N72 solar energy control unit connectors.

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

      B006IACC12
      *a

      Rear view of wire harness connector

      (Solar Energy Control Unit)

      		 - -
      Standard Voltage
      Tester Connection Condition Specified Condition
      N73-2 (VBS) - N73-8 (GVBS) Power switch off 18 to 30 V

    6. Reconnect the N71 and N72 solar energy control unit connectors.

    7. Reconnect the N73 solar energy control unit connector.

    8. Install the rear seat cushion assembly LH.

      Result
      Proceed to
      OK
      NG

    OK

    GO TO PROBLEM SYMPTOMS TABLE Click here

    NG

    CHECK HARNESS AND CONNECTOR (SOLAR ENERGY CONTROL UNIT - SOLAR BATTERY) Click here

  5. CHECK FUSE (AMD2)


    1. B006I0YC01
      *1 No. 1 Engine Room Relay Block and No. 1 Junction Block Assembly
      *2 AMD2 Fuse

      Remove the AMD2 fuse from the No. 1 engine room relay block and No. 1 junction block assembly.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      AMD2 fuse terminals Always Below 1 Ω

    3. Install the AMD2 fuse.

      Result
      Proceed to
      OK
      NG

    OK

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    NG

    CHECK HARNESS AND CONNECTOR (SOLAR ENERGY CONTROL UNIT - NO. 1 ENGINE ROOM RELAY BLOCK AND NO. 1 JUNCTION BLOCK ASSEMBLY) Click here

  6. CHECK CONNECTOR CONNECTION CONDITION (NO. 1 ROOF WINDOW GLASS SUB-ASSEMBLY CONNECTOR)


    1. Remove the roof headlining assembly.

      Click here

    2. B006IXU

      Check the connection condition of the No. 1 roof window glass sub-assembly connector and the contact pressure of each terminal. Check the terminals for deformation, and check the connector for water ingress and foreign matter.

      Click here

      OK
      - The connector is connected securely.
      - The terminals are not deformed and are connected securely.
      - No water or foreign matter in the connector.
      Result
      Result Proceed to
      OK A
      NG (The connector is not connected securely.) B
      NG (The terminals are not making secure contact or are deformed, or water or foreign matter exists in the connector.) C

    3. Install the roof headlining assembly.


    B

    CONNECT SECURELY

    C

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    A

  7. CHECK HARNESS AND CONNECTOR (SOLAR ENERGY CONTROL UNIT - NO. 1 ROOF WINDOW GLASS SUB-ASSEMBLY)

    CAUTION:

    Be sure to wear insulated gloves.


    1. Remove the roof headlining assembly.

      Click here

    2. Disconnect the N69 No. 1 roof window glass sub-assembly connector.

    3. Check that the service plug grip is not installed.

      Note

      After removing the service plug grip, do not turn the power switch on (READY), unless instructed by the repair manual because this may cause a malfunction.

    4. Remove the rear seat cushion assembly LH.

    5. B006IB2N01

      Disconnect the N73 solar energy control unit connector.

    6. B006IM3N01

      Disconnect the N71 and N72 solar energy control unit connectors.

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

      B006J3ZC01
      *a

      Rear view of wire harness connector

      to Solar Energy Control Unit)

      		 *b

      Front view of wire harness connector

      (to No. 1 Roof Window Glass Sub-assembly)
      Standard Resistance
      Tester Connection Condition Specified Condition
      N73-5 (VSOP) - N69-2 (VSOP) Power switch off Below 1 Ω
      N73-7 (VSON) - N69-1 (VSON) Power switch off Below 1 Ω
      N73-5 (VSOP) or N69-2 (VSOP) - Body ground and other terminals Power switch off 10 kΩ or higher
      N73-7 (VSON) or N69-1 (VSON) - Body ground and other terminals Power switch off 10 kΩ or higher

    8. Reconnect the N71 and N72 solar energy control unit connectors.

    9. Reconnect the N73 solar energy control unit connector.

    10. Install the rear seat cushion assembly LH.

    11. Reconnect the N69 No. 1 roof window glass sub-assembly connector.

    12. Install the roof headlining assembly.

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE ROOF WINDOW GLASS SUB-ASSEMBLY NO.1 Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  8. CHECK HARNESS AND CONNECTOR (SOLAR ENERGY CONTROL UNIT - SOLAR BATTERY)

    CAUTION:

    Be sure to wear insulated gloves.


    1. Check that the service plug grip is not installed.

      Note

      After removing the service plug grip, do not turn the power switch on (READY), unless instructed by the repair manual because this may cause a malfunction.

    2. Remove the rear seat cushion assembly LH.

      Click here

    3. B006IB2N01

      Disconnect the N73 solar energy control unit connector.

    4. B006IM3N01

      Disconnect the N71 and N72 solar energy control unit connectors.

    5. Remove the No. 1 solar battery shield panel.

      Click here

    6. Disconnect the N70 solar battery connector.

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

      B006ITHC10
      *a

      Rear view of wire harness connector

      (to Solar Energy Control Unit)

      		 *b

      Rear view of wire harness connector

      (to Solar Battery)
      Standard Resistance (Check for Open)
      Tester Connection Condition Specified Condition
      N72-1 (VB3) - N70-9 (VB3) Power switch off Below 1 Ω
      N72-15 (GVB) - N70-18 (GVB) Power switch off Below 1 Ω
      N73-8 (GVBS) - N70-20 (GVBS) Power switch off Below 1 Ω
      N73-2 (VBS) - N70-10 (VBS) Power switch off Below 1 Ω
      Standard Resistance (Check for Short)
      Tester Connection Condition Specified Condition
      N72-1 (VB3) or N70-9 (VB3) - Body ground and other terminals Power switch off 10 kΩ or higher
      N72-15 (GVB) or N70-18 (GVB) - Body ground and other terminals Power switch off 10 kΩ or higher
      N73-8 (GVBS) or N70-20 (GVBS) - Body ground and other terminals Power switch off 10 kΩ or higher
      N73-2 (VBS) or N70-10 (VBS) - Body ground and other terminals Power switch off 10 kΩ or higher

    8. Reconnect the N70 solar battery connector.

    9. Install the No. 1 solar battery shield panel.

    10. Reconnect the N71 and N72 solar energy control unit connectors.

    11. Reconnect the N73 solar energy control unit connector.

    12. Install the rear seat cushion assembly LH.

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE SOLAR BATTERY Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  9. CHECK HARNESS AND CONNECTOR (SOLAR ENERGY CONTROL UNIT - NO. 1 ENGINE ROOM RELAY BLOCK AND NO. 1 JUNCTION BLOCK ASSEMBLY)

    CAUTION:

    Be sure to wear insulated gloves.


    1. Check that the service plug grip is not installed.

      Note

      After removing the service plug grip, do not turn the power switch on (READY), unless instructed by the repair manual because this may cause a malfunction.

    2. Remove the EV charger duct.

      Click here

    3. Disconnect the N75 electric vehicle charger assembly connector.

    4. Remove the rear seat cushion assembly LH.

      Click here

    5. B006IB2N01

      Disconnect the N73 solar energy control unit connector.

    6. B006IM3N01

      Disconnect the N71 and N72 solar energy control unit connectors.

    7. B006I0YC03
      *1 No. 1 Engine Room Relay Block and No. 1 Junction Block Assembly
      *2 AMD2 Fuse

      Remove the AMD2 fuse from the No. 1 engine room relay block and No. 1 junction block assembly.

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

      B006HSJC01
      *1 No. 1 Engine Room Relay Block and No. 1 Junction Block Assembly *2 AMD2 Fuse
      *a

      Rear view of wire harness connector

      (to Solar Energy Control Unit)

      		 - -
      Standard Resistance
      Tester Connection Condition Specified Condition
      N73-4 (AMD) or 2 (AMD2 fuse) - Body ground and other terminals Always 10 kΩ or higher

    9. Install the AMD2 fuse.

    10. Reconnect the N71 and N72 solar energy control unit connectors.

    11. Reconnect the N73 solar energy control unit connector.

    12. Install the rear seat cushion assembly LH.

    13. Reconnect the N75 electric vehicle charger assembly connector.

    14. Install the EV charger duct.

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE FUSE (AMD2)

    NG

  10. REPAIR OR REPLACE HARNESS OR CONNECTOR

    Result
    Proceed to
    NEXT

    NEXT

    REPLACE FUSE (AMD2)