ENTRY AND START SYSTEM, Diagnostic DTC:B2276

DTC Code DTC Name
B2276 ACCR Signal Circuit Malfunction

DESCRIPTION

This DTC is output when a malfunction is detected in the ACCR signal output by the main body ECU.

DTC Code Detection Condition Trouble Area
B2276 ACCR output circuit inside main body ECU or other related circuit is malfunctioning

  • Main body ECU

  • SFI system

  • Harness or connector

WIRING DIAGRAM

A001EIJE02
*a Main Body ECU

PROCEDURE


  1. CHECK WHETHER DTC OUTPUT RECURS


    1. Clear the DTCs Click here.

    2. Check whether DTC B2276 recurs 50 seconds or more after the engine switch is turned on (IG).

      Result
      Display (DTC output) Proceed to
      B2276 A
      No DTC output B

    B

    END (SYSTEM IS OK)

    A

  2. CHECK MAIN BODY ECU (ACCR VOLTAGE)


    1. A001FXEE03
      *1 Front view of wire harness connector: (to Main Body ECU)

      Disconnect the L12 main body ECU connector.

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

      Standard voltage
      Tester Connection Condition Specified Condition
      L12-3 (ACCR) - Body ground When operating the engine switch to crank the engine. 11 to 14 V

    NG

    CHECK MAIN BODY ECU (OPERATION) Click here

    OK

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

    A001DF1E02
    *1 Front view of wire harness connector: (to Main Body ECU)
    *2 Front view of wire harness connector: (to ECM)

    1. Disconnect the L12 main body ECU connector.

    2. Disconnect the A13 ECM connector.

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

      Standard resistance
      Tester Connection Condition Specified Condition
      L12-3 (ACCR) - A13-19 (ACCR) Always Below 1 Ω
      L12-3 (ACCR) or A13-19 (ACCR) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. CHECK MAIN BODY ECU (OPERATION)


    1. Temporarily replace the main body ECU with a new or normally functioning one.

    2. Check whether DTC B2276 recurs by repeating the "CHECK WHETHER DTC OUTPUT RECURS" procedures above.

      OK
      No DTC is output.

    OK

    END (MAIN BODY ECU IS FAULTY)

    NG

    GO TO SFI SYSTEM Click here