DTC B2275: STSW Monitor Malfunction: Procedure

1. Clear the DTC. Refer to DTC CHECK / CLEAR .
2. Turn the engine switch on (IG).
3. After 15 seconds have elapsed, check for DTCs.
   RESULT
   
   

   Result	Proceed to
   DTC B2275 is not output.	A
   DTC B2275 is output.	B

B → See step   2 

A → See step   4 

1. Disconnect the J55 connector from the power source control ECU.
   Fig 1: J55 And A5 Connector Terminal Identification

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Disconnect the A5 connector from the ECM.
3. Measure the resistance according to the value(s) in the table below.
   STANDARD RESISTANCE
   
   

   Tester Connection	Condition	Specified Condition
   J55-39 (STSW) - A5-19 (STSW)	Always	Below 1 Ω
   J55-39 (STSW) or A5-19 (STSW) - Body ground	Always	10 kΩ or higher

   TEXT IN ILLUSTRATION
   
   

   *1	Front view of wire harness connector (to Power Source Control ECU)
   *2	Front view of wire harness connector (to ECM)

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CONTROL ECU - ECM) 

OK: Go to next step 

1. Reconnect the J55 connector to the power source control ECU.
   Fig 2: J55 Connector Terminal Identification

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the voltage according to the value(s) in the table below.
   STANDARD VOLTAGE
   
   

   Tester Connection	Condition	Specified Condition
   J55-39 (STSW) - Body ground	for AT: Brake pedal depressed, engine switch hold on (ST) for MT: Clutch pedal depressed, engine switch hold on (ST)	Output voltage at terminal AM1 or AM2 is -2 V or more.

   TEXT IN ILLUSTRATION
   
   

   *1	Component with harness connected (Power Source Control ECU)

   RESULT
   
   

   Result	Proceed to
   OK (for 2GR-FSE)	A
   OK (for 4GR-FSE)	B
   NG	C

B → See step   7 

C → See step   5 

A → See step   6