DTC B2275 STSW Monitor Malfunction

Clear the DTCs ().

Depress the brake pedal (for A/T) or clutch pedal (for M/T) with the engine switch on (IG), wait at least 15 seconds, and check whether DTC B2275 is output.

Disconnect the E4 main body ECU connector.

Disconnect the A38 (for LHD) or A52 (for RHD) ECM connector.

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

• Standard Resistance (except 1VD-FTV w/ DPF):

• Tester Connection	Condition	Specified Condition
  E4-4 (STSW) - A38-14 (STSW)*1 E4-4 (STSW) - A52-14 (STSW)*2	Always	Below 1 Ω
  E4-4 (STSW) or A38-14 (STSW) - Body ground*1 E4-4 (STSW) or A52-14 (STSW) - Body ground*2	Always	10 kΩ or higher

• HINT:

• *1: for LHD

• *2: for RHD

• Standard Resistance (for 1VD-FTV w/ DPF):

• Tester Connection	Condition	Specified Condition
  E4-4 (STSW) - A38-47 (STSW)*1 E4-4 (STSW) - A52-47 (STSW)*2	Always	Below 1 Ω
  E4-4 (STSW) or A38-47 (STSW) - Body ground*1 E4-4 (STSW) or A52-47 (STSW) - Body ground*2	Always	10 kΩ or higher

• HINT:

• *1: for LHD

• *2: for RHD

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

• HINT:

• The voltage is generated at terminal STSW for 0.3 seconds when the engine cranks.

• Standard Voltage (for A/T):

• Tester Connection	Condition	Specified Condition
  E4-4 (STSW) - Body ground	Brake pedal depressed with shift lever in P, engine switch pushed once	11 to 14 V

• Standard Voltage (for M/T):

• Tester Connection	Condition	Specified Condition
  E4-4 (STSW) - Body ground	Clutch pedal depressed, engine switch pushed once	11 to 14 V