LIN COMMUNICATION SYSTEM, Diagnostic DTC:B2287

DTC Code DTC Name
B2287 LIN Communication Master Malfunction

DESCRIPTION

This DTC is output there is an open, short or ECU communication malfunction between the main body ECU and certification ECU.

DTC Code DTC Detection Condition Trouble Area
B2287 There is an open, short or ECU communication malfunction between main body ECU and certification ECU.

  • Certification ECU

  • Main body ECU

  • Harness or connector

WIRING DIAGRAM

A01GYDYE01

INSPECTION PROCEDURE

Note

When using the intelligent tester with the power 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 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 DTC Click here.

      Result:
      Result Proceed to
      DTC B2287 output reoccurs A
      DTC B2287 output does not reoccur B

    B

    USE SIMULATION METHOD TO CHECK Click here

    A

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

    A01H0DHE03

    1. Disconnect the L15 and DA ECU connectors.

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

      Standard resistance
      Tester Connection Condition Specified Condition
      L15-10 (LIN) - DA-52 (LIN1) Always Below 1 Ω
      L15-10 (LIN) or DA-52 (LIN1) - Body ground Always 10 kΩ or higher
      Standard voltage
      Tester Connection Switch Condition Specified Condition
      L15-10 (LIN) or DA-52 (LIN1) - Body ground Power switch on (IG) Below 1 V

    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. Clear the DTC Click here.


    NEXT

  5. CHECK FOR DTC


    1. Recheck for DTC Click here.

      Result:
      Result Proceed to
      DTC B2287 output does not reoccur A
      DTC B2287 output reoccurs B

    B

    REPLACE CERTIFICATION ECU

    A

    END (MAIN BODY ECU IS FAULTY)