LIN COMMUNICATION SYSTEM, Diagnostic DTC:B2287

DTC Code DTC Name
B2287 LIN Communication Master Malfunction

DESCRIPTION

This DTC is stored there is an open, short or ECU communication malfunction between the main body ECU (cowl side junction block LH) and certification ECU (smart key ECU assembly).

DTC Code DTC Detection Condition Trouble Area
B2287 There is an open, short or ECU communication malfunction between the main body ECU (cowl side junction block LH) and certification ECU (smart key ECU assembly).

  • Certification ECU (smart key ECU assembly)

  • Main body ECU (cowl side junction block LH)

  • Harness or connector

WIRING DIAGRAM

A01X9VJE02
*1 Main Body ECU (Cowl Side Junction Block LH)
*2 Certification ECU (Smart Key ECU Assembly)
*3 LIN Line

CAUTION / NOTICE / HINT

Note

When using the intelligent tester with the ignition switch off to troubleshoot:

Connect the intelligent tester to the vehicle, and turn a courtesy switch on and off at 1.5 second intervals until communication between the intelligent tester and vehicle begins.

Tech Tips

When DTC B2287 and B2785 are output simultaneously, perform the troubleshooting for DTC B2785 first Click here.

PROCEDURE


  1. CLEAR DTC


    1. Clear the DTC Click here.


    NEXT

  2. CHECK FOR DTC


    1. Recheck for DTCs Click here.

      Result
      Result Proceed to
      DTC B2287 is output A
      DTC B2287 is not output B

    B

    USE SIMULATION METHOD TO CHECK Click here

    A

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

    A01X357E02
    *1 Front view of wire harness connector: (to Main Body ECU)
    *2 Front view of wire harness connector: (to Certification ECU)

    1. Disconnect the E29 and 2D ECU connectors.

    2. Measure the resistance and voltage according to the value(s) in the tables below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      E29-10 (LIN) - 2D-20 (LIN1) Always Below 1 Ω
      E29-10 (LIN) or 2D-20 (LIN1) - Body ground Always 10 kΩ or higher
      Standard Voltage
      Tester Connection Condition Specified Condition
      E29-10 (LIN) or 2D-20 (LIN1) - Body ground Always Below 1 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. REPLACE MAIN BODY ECU (COWL SIDE JUNCTION BLOCK LH)


    1. Temporarily replace the main body ECU (cowl side junction block LH) with a new or normally functioning one.

    2. Clear the DTC Click here.


    NEXT

  5. CHECK FOR DTC


    1. Recheck for DTCs Click here.

      Result
      Result Proceed to
      DTC B2287 is not output A
      DTC B2287 is output B

    A

    END (MAIN BODY ECU IS DEFECTIVE)

    B

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)