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. Based on this signal, the mobile wireless charger cradle 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

A003KJ7E05
*1 3.3V
*2 WCSW
*3 Certification ECU (Smart Key ECU Assembly)
*4 Mobile Wireless Charger Cradle 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 (DIS TERMINAL)


    1. A003OYAC24
      *a

      Component with harness connected

      (Mobile Wireless Charger Cradle Assembly)

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      I43-7 (DIS) - Body ground For 5 seconds after turning power switch from off to on (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 power switch is turned from off to on (ACC), the mobile wireless charger cradle 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 determines that there is an open in the charging suspension signal line, blinks (pattern 1) the indicator light (amber), and prohibits operation until the power switch is turned from off to on (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 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)


    1. Disconnect the N54 certification ECU (smart key ECU assembly) connector.

    2. Disconnect the I43 mobile wireless charger cradle assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      N54-7 (WCSW) - I43-7 (DIS) Always Below 1 Ω
      N54-7 (WCSW) or I43-7 (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