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 hybrid activation request output circuit malfunction or external circuit malfunction (1-trip detection logic*)

  • Certification ECU (smart key ECU assembly)

  • Hybrid vehicle control ECU assembly

  • Harness or connector

    DTC Output Confirmation Operation:

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

Vehicle Condition and Fail-safe Function when Malfunction Detected
Vehicle Condition when Malfunction Detected Fail-safe Function when Malfunction Detected

  • The power source mode changes to on (READY) even though the hybrid control system is not started.

  • The power source mode does not change to on (READY) even though the hybrid control system is started.

 -
Related Data List and Active Test Items
DTC No. Data List and Active Test
B2275

    Power Source Control

  • Starter Request Signal

WIRING DIAGRAM

B000SQ1E04
*1 Hybrid Vehicle Control ECU Assembly
*2 Certification ECU (Smart Key ECU Assembly)

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 Model Code "KEY REGIST" under manual mode and enter the following menus: Body Electrical / Entry&Start. 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 the LIN communication system and CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting. Troubleshoot the entry and start system (for Start Function) after confirming that the communication systems are functioning properly.

    Click here

  • Before replacing the certification ECU (smart key ECU assembly), refer to the Service Bulletin.

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

PROCEDURE


  1. CHECK FOR DTC


    1. Connect the GTS to the DLC3.

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

    3. Turn the GTS on.

    4. Enter the following menus: Body Electrical / Power Source Control / Trouble Codes.

    5. 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 (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - HYBRID VEHICLE CONTROL ECU ASSEMBLY)


    1. Disconnect the P66 certification ECU (smart key ECU assembly) connector.

    2. Disconnect the P64 hybrid vehicle control ECU assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specification Condition
      P66-27 (ST2) - P64-9 (ST2) Always Below 1 Ω
      P66-27 (ST2) or P64-9 (ST2) - Other terminals and body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)


    1. B004C79C87
      *a

      Component with harness connected

      (Certification ECU (Smart Key ECUAssembly))

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

    2. Reconnect the P64 hybrid vehicle control ECU assembly connector.

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

      Standard Voltage
      Tester Connection Condition Specification Condition
      P64-27 (ST2) - Body ground With the brake pedal depressed, the power switch is pressed and held → After approximately 3 sec. has elapsed, the power switch is released 8.5 V or higher → 1 V or less
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE HYBRID VEHICLE CONTROL ECU ASSEMBLY Click here

    NG

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)