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. DTC Detection Condition Trouble Area
B2287 There is an open, short or ECU communication malfunction between 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

WIRING DIAGRAM

A011YQ1E33

INSPECTION PROCEDURE

Note

  • If the certification ECU (smart key ECU assembly) is replaced, register the keys Click here.

  • When using the Techstream to troubleshoot with the power switch off:

    Connect the Techstream to the DLC3, and turn the courtesy switch on and off at 1.5-second intervals until communication between the Techstream and vehicle begins.

PROCEDURE

  1. CHECK DTC OUTPUT

    1. Clear the DTC Click here.

    2. Recheck for DTCs.

      Tech Tips

      Check the both "Smart Key" and "Power Source Control" DTCs.

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

      Tech Tips

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

    B

    GO TO DTC B2785 Click here

    A

  2. CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU - POWER MANAGEMENT CONTROL ECU)

    1. Disconnect the I4 power management control ECU and I87 certification ECU (smart key ECU assembly) connectors.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      I4-11 (LIN2) - I87-12 (LIN) Always Below 1 Ω
      I4-11 (LIN2) - Body ground Always 10 kΩ or higher
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. REPLACE POWER MANAGEMENT CONTROL ECU

    1. Replace the power management control ECU Click here.

    NEXT

  4. CHECK DTC OUTPUT

    1. Clear the DTC Click here.

    2. Recheck for DTCs.

      OK
      DTC B2287 is not output.
    NG

    REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) Click here

    OK

    END (POWER MANAGEMENT CONTROL ECU WAS DEFECTIVE)