DTC B2275: STSW Monitor Malfunction [10/2014 - ]: Procedure

1. Turn the power switch on (IG) and wait 25 seconds.
2. Using the Techstream, 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 [10/2014 - 10/2019]  , or refer to  DTC B2285: Steering Lock Position Signal Circuit Malfunction [10/2019 - ]  

Result: 

OK 

See step  2

See step  1

Result

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR IN CIRCUIT CONNECTED TO POWER SOURCE 

Result: 

OK 

See step  3

See step  2

Result

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  4

1. Disconnect the I51 certification ECU (smart key ECU assembly) connector.
2. Disconnect the I115 hybrid vehicle control ECU connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specification Condition
   I51-12 (ST2) - I115-9 (ST2)	Always	Below 1 Ω
   I51-12 (ST2) or I115-9 (ST2) - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  5

1. Reconnect the I51 certification ECU (smart key ECU assembly) connector.
2. Reconnect the I115 hybrid vehicle control ECU connector.
3. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Condition	Specification Condition
   I51-12 (ST2) - Body ground	With the brake pedal depressed, the power switch is pressed and held → After approx. 3 sec. has elapsed, the power switch is released	9 V or higher → 1 V or less

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE HYBRID VEHICLE CONTROL ECU. Refer to  REMOVAL [10/2014 - 05/2019]  , or refer to  REMOVAL [05/2019 - ] 

Result: 

NG 

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to  REMOVAL [10/2014 - ]