Status Signal Circuit [10/2022 - 11/2023]: Procedure

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

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Component with harness connected (Mobile Wireless Charger Cradle Assembly)

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   H116-8 (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 key 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 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 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.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE [10/2022 - 11/2023]  

Result: 

NG 

See step  2

1. Disconnect the M5 certification ECU (smart key ECU assembly) connector.
2. Disconnect the H116 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
   M5-7 (WCSW) - H116-8 (DIS)	Always	Below 1 Ω
   M5-7 (WCSW) or H116-8 (DIS) - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to  REMOVAL [12/2019 - 11/2023] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR