LIN COMMUNICATION SYSTEM, Diagnostic DTC:B2287

DTC Code DTC Name
B2287 LIN Communication Master Malfunction

DESCRIPTION

This DTC is stored when there is an open, short or ECU communication malfunction between the power management control ECU and certification ECU (smart key ECU assembly).

DTC No. Detection Item DTC Detection Condition Trouble Area
B2287 LIN Communication Master Malfunction There is an open, short or ECU communication malfunction between the power management control ECU and certification ECU (smart key ECU assembly).

  • Power management control ECU

  • Certification ECU (smart key ECU assembly)

  • Wire harness or connector

  • ECU-B NO. 2 fuse

WIRING DIAGRAM

A013AP6E01

CAUTION / NOTICE / HINT

Note


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

  • If the certification ECU (smart key ECU assembly) or power management control ECU is replaced, refer to Service Bulletin.

PROCEDURE


  1. CHECK DTC OUTPUT


    1. Clear the DTCs.

      Click here


      Body Electrical > Entry&Start > Clear DTCs
      Body Electrical > Power Source Control > Clear DTCs

    2. Recheck for DTCs.


      Body Electrical > Entry&Start > Trouble Codes
      Body Electrical > Power Source Control > Trouble Codes

      Tech Tips

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

      Result
      Result Proceed to
      Only B2287 is output A
      DTC B2287 and B2785 are output simultaneously B

    B

    GO TO DTC B2785 Click here

    A

  2. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - AUXILIARY BATTERY AND BODY GROUND)


    1. Disconnect the E116 and E117 certification ECU (smart key ECU assembly) connectors.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      E116-5 (+B) - E117-1 (E) Power switch off 11 to 14 V

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      E117-1 (E) - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - POWER MANAGEMENT CONTROL ECU)


    1. Disconnect the E112 power management control ECU connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      E116-12 (LIN) - E112-11 (LIN2) Always Below 1 Ω
      E116-12 (LIN) - Body ground Always 10 kΩ or higher
      E112-11 (LIN2) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. REPLACE POWER MANAGEMENT CONTROL ECU


    1. Replace the power management control ECU.

      for LHD: Click here

      for RHD: Click here

      Result
      Proceed to
      NEXT

    NEXT

  5. CHECK DTC OUTPUT


    1. Clear the DTCs.

      Click here


      Body Electrical > Power Source Control > Clear DTCs

    2. Recheck for DTCs.


      Body Electrical > Power Source Control > Trouble Codes
      OK
      DTC B2287 is not output.
      Result
      Proceed to
      OK
      NG

    OK

    END (POWER MANAGEMENT CONTROL ECU WAS DEFECTIVE)

    NG

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)