DTC B2275: STSW Monitor Malfunction [11/2018 - ]: Procedure

1. Connect the Techstream to the DLC3.
2. Turn the power switch on (IG) and wait 25 seconds.
3. Turn the Techstream on.
4. Enter the following menus: Body Electrical / Power Source Control / Trouble Codes.
5. Check for DTCs.

   Body Electrical > Power Source Control > Trouble Codes 

   OK

   DTC B2285 is not output simultaneously.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

GO TO DTC B2285. Refer to  DTC B2285: Steering Lock Position Signal Circuit Malfunction [11/2018 - 10/2019]  , or refer to  DTC B2285: Steering Lock Position Signal Circuit Malfunction [10/2019 - 12/2021]  , or refer to  DTC B2285: Steering Lock Position Signal Circuit Malfunction [12/2021 - ]  

Result: 

OK 

See step  2

1. Disconnect the G54 certification ECU (smart key ECU assembly) connector.
2. Disconnect the A30 hybrid vehicle control ECU assembly connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specification Condition
   G54-27 (ST2) - A30-4 (ST2)	Always	Below 1 Ω
   G54-27 (ST2) or A30-4 (ST2) - Other terminals and body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  3

1. Reconnect the certification ECU (smart key ECU assembly) connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Component with harness connected (Certification ECU (Smart Key ECU Assembly))

2. Reconnect the A30 hybrid vehicle control ECU assembly connector.
3. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Condition	Specification Condition
   G54-27 (ST2) - Body ground	With the brake pedal depressed, the power switch is pressed and held → After approximately 3 seconds has elapsed, the power switch is released	8.5 V or higher → 1 V or less

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE HYBRID VEHICLE CONTROL ECU ASSEMBLY. Refer to  REMOVAL [11/2018 - 02/2019]  , or refer to  REMOVAL [02/2019 - 10/2019]  , or refer to  REMOVAL [10/2019 - 08/2020]  , or refer to  REMOVAL [08/2020 - 12/2021]  , or refer to  REMOVAL [12/2021 - 10/2022]  , or refer to  REMOVAL [10/2022 - 10/2023]  , or refer to  REMOVAL [10/2023 - ] 

Result: 

NG 

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to  REMOVAL [11/2018 - 02/2019]  , or refer to  REMOVAL [02/2019 - 10/2019]  , or refer to  REMOVAL [10/2019 - 08/2020]  , or refer to  REMOVAL [08/2020 - 12/2021]  , or refer to  REMOVAL [12/2021 - 10/2022]  , or refer to  REMOVAL [10/2022 - 10/2023]  , or refer to  REMOVAL [10/2023 - ]