ENTRY AND START SYSTEM(for Start Function), Diagnostic DTC:B2275

DTC Code DTC Name
B2275 STSW Monitor Malfunction

DESCRIPTION

This DTC is stored when the engine start request signal circuit inside the main body ECU is open or shorted.

DTC Code Detection Condition Trouble Area
B2275 The engine start request signal circuit inside the main body ECU or other related circuit is malfunctioning.

  • Main body ECU


  • ECM


  • Harness or connector

WIRING DIAGRAM

A01X1GGE01

PROCEDURE


  1. CHECK WHETHER DTC OUTPUT RECURS


    1. Clear the DTCs Click here.

    2. 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.

      Result
      Result Proceed to
      DTC B2275 output A
      No DTC output B

    B

    USE SIMULATION METHOD TO CHECK Click here

    A

  2. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - ECM)

    A01X02KE01

    1. Disconnect the E4 main body ECU connector.

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

    3. 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

      Tech Tips

      *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

      Tech Tips

      *1: for LHD

      *2: for RHD


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. INSPECT MAIN BODY ECU

    A01X06XE01
    *1 Component with harness connected: (Main Body ECU)

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

      Tech Tips

      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
      Result
      Result Proceed to
      Outside specified range A
      Within specified range (for 1GR-FE) B
      Within specified range (for 1UR-FE) C
      Within specified range (for 3UR-FE) D
      Within specified range (for 1VD-FTV) E

    A

    REPLACE MAIN BODY ECU

    B

    REPLACE ECM Click here

    C

    REPLACE ECM Click here

    D

    REPLACE ECM Click here

    E

    REPLACE ECM Click here