Status Signal Circuit [06/2018 - 09/2022]: Procedure

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   H8-7 (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 key system status*2	4.5 to 6.0 V

   1. *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. *2: For details about conditions when the certification ECU (smart key ECU assembly) sends the charging suspension signal, refer to System Description.

      Refer to SYSTEM DESCRIPTION [06/2018 - 07/2019] , or refer to SYSTEM DESCRIPTION [07/2019 - 09/2022] 

   Result

   Proceed to
   OK
   NG

Result: 

OK 

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE [06/2018 - 09/2022]  

Result: 

NG 

See step  2

1. Disconnect the N9 certification ECU (smart key ECU assembly) connector.
2. Disconnect the H8 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
   N9-7 (WCSW) - H8-7 (DIS)	Always	Below 1 Ω
   N9-7 (WCSW) or H8-7 (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 [06/2018 - 08/2021]  , or refer to  REMOVAL [08/2021 - 09/2022] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR