WIRELESS CHARGING SYSTEM Status Signal Circuit

DESCRIPTION

This circuit sends a charging suspension signal from the certification ECU (smart key ECU assembly) to the mobile wireless charger cradle assembly (front console box insert sub-assembly). Based on this signal, the mobile wireless charger cradle assembly (front console box insert sub-assembly) suspends or resumes wireless charging.

Tech Tips

The wireless charging system uses the same radio wave frequency that is used to perform verification of the electrical key transmitter sub-assembly. Therefore, when the electrical key transmitter sub-assembly verification is being performed, the certification ECU (smart key ECU assembly) sends a charging suspension signal to the wireless charging system to suspend charging.

WIRING DIAGRAM

B0071STE12
*1 3.3 V
*2 WCSW
*3 Certification ECU (Smart Key ECU Assembly)
*4 Mobile Wireless Charger Cradle Assembly (Front Console Box Insert Sub-assembly)

CAUTION / NOTICE / HINT

Note

Before replacing the certification ECU (smart key ECU assembly), refer to Service Bulletin.

PROCEDURE


  1. CHECK MOBILE WIRELESS CHARGER CRADLE ASSEMBLY (FRONT CONSOLE BOX INSERT SUB-ASSEMBLY) (DIS TERMINAL)

    B00717LC26
    *a

    Component with harness connected

    (Mobile Wireless Charger Cradle Assembly (Front Console Box Insert Sub-assembly))

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      k1-7 (DIS) - Body ground For 5 seconds after turning ignition switch from off to ACC*1 4.5 to 6.0 V
      Device being charged Below 1 V
      Charging suspended due to smart entry and start system status*2 4.5 to 6.0 V

      • *1: When the ignition switch is turned from off to ACC, the mobile wireless charger cradle assembly (front console box insert sub-assembly) monitors the charging suspension signal for 5 seconds. If the charging suspension signal is not 4 V or more for 0.8 seconds or more during monitoring, the mobile wireless charger cradle assembly (front console box insert sub-assembly) determines that there is an open in the charging suspension signal line, blinks (pattern 1) the indicator light (amber), and prohibits operation until the ignition switch is turned from off to ACC again.

      • *2: For details about conditions when the certification ECU (smart key ECU assembly) sends the charging suspension signal, refer to System Description.

        Click here

      Result
      Proceed to
      OK
      NG

    OK

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

    NG

  2. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - MOBILE WIRELESS CHARGER CRADLE ASSEMBLY (FRONT CONSOLE BOX INSERT SUB-ASSEMBLY))


    1. Disconnect the R13 certification ECU (smart key ECU assembly) connector.

    2. Disconnect the k1 mobile wireless charger cradle assembly (front console box insert sub-assembly) connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      R13-7 (WCSW) - k1-7 (DIS) Always Below 1 Ω
      R13-7 (WCSW) or k1-7 (DIS) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR