Status Signal Circuit [03/2017 - 08/2021]: 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
   k1-7 (DIS) - Body ground	For 5 seconds after turning engine 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. *1: When the engine switch is turned from off to on (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 engine 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 [03/2017 - 08/2021] 

   Result

   Proceed to
   OK
   NG

Result: 

OK 

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE [03/2017 - ]  

Result: 

NG 

See step  2

1. Disconnect the R8 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
   R8-7 (WCSW) - k1-7 (DIS)	Always	Below 1 Ω
   R8-7 (WCSW) or k1-7 (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 [03/2017 - 06/2017]  , or refer to  REMOVAL [06/2017 - 10/2020]  , or refer to  REMOVAL [10/2020 - ] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR