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

DTC Code DTC Name
B2275 STSW Monitor Malfunction

DESCRIPTION

This DTC is stored when a malfunction is detected in the starter circuit inside the certification ECU (smart key ECU assembly).

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

Note

B2275

STSW Monitor Malfunction

Certification ECU (smart key ECU assembly) internal HV activation request output circuit malfunction or external circuit malfunction (1-trip detection logic*)

  • AM2 fuse

  • Steering lock system

  • Certification ECU (smart key ECU assembly)

  • Hybrid vehicle control ECU

  • Harness or connector

Turn the power switch on (IG) and wait 10 seconds or more, then start the hybrid control system 3 times.

WIRING DIAGRAM

C348558E02

CAUTION / NOTICE / HINT

Note:

  • When using the GTS with the power switch off, connect the GTS to the DLC3 and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the GTS and the vehicle begins. Then select the vehicle type under manual mode and enter the following menus: Body Electrical / Smart Access. While using the GTS, periodically turn a courtesy light switch on and off at intervals of 1.5 seconds or less to maintain communication between the GTS and the vehicle.

  • The entry and start system (for Start Function) uses a multiplex communication system (LIN communication system) and the CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting (Click here). Troubleshoot the entry and start system (for Start Function) after confirming that the communication systems are functioning properly.

  • Before replacing the certification ECU (smart key ECU assembly), refer to entry and start system (for Start Function) Precaution.

    Click here

  • Inspect the fuses of circuits related to this system before performing the following procedure.

  • After repair, confirm that no DTCs are output by performing "DTC Output Confirmation Operation".

Tip:

When the cable is disconnected and reconnected to the negative (-) auxiliary battery terminal, the power source mode returns to the state it was in before the cable was disconnected.

PROCEDURE

  1. CHECK FOR DTC

    1. Turn the power switch on (IG) and wait 25 seconds.

    2. Using the GTS, check for DTCs.

      Body Electrical > Power Source Control > Trouble Codes

      OK

      DTC B2285 is not output simultaneously.

    Result

    Proceed to

    OK

    NG
    NG

    GO TO DTC B2285

    Click here

    OK

  2. CHECK HARNESS AND CONNECTOR (POWER SOURCE)

    1. B268625C36

      *a

      Rear view of wire harness connector

      (to Certification ECU (Smart Key ECU Assembly))

      Disconnect the G82 certification ECU (smart key ECU assembly) connector.

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

      Standard Voltage

      Tester Connection

      Condition

      Specified Condition

      G82-2 (+B) - Body ground

      Always

      11 to 14 V

    Result

    Proceed to

    OK

    NG
    NG

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

    OK

  3. CHECK HARNESS AND CONNECTOR (GROUND)

    1. B268625C38

      *a

      Rear view of wire harness connector

      (to Certification ECU (Smart Key ECU Assembly))

      Disconnect the G82 certification ECU (smart key ECU assembly) connector.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      G82-11 (E) - Body ground

      Always

      Below 1 Ω

    Result

    Proceed to

    OK

    NG
    NG

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

    OK

  4. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - HYBRID VEHICLE CONTROL ECU)

    1. Disconnect the G82 certification ECU (smart key ECU assembly) connector.

    2. Disconnect the G193 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

      G82-7 (ST2) - G193-9 (ST2)

      Always

      Below 1 Ω

      G82-7 (ST2) or G193-9 (ST2) - Body ground

      Always

      10 kΩ or higher

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    1. Reconnect the G82 certification ECU (smart key ECU assembly) connector.

    2. Reconnect the G193 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

      G193-9 (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
    OK

    REPLACE HYBRID VEHICLE CONTROL ECU

    Click here

    NG

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)