ENTRY AND START SYSTEM (for Start Function), Diagnostic DTC:B2287

DTC Code DTC Name
B2287 LIN Communication Master Malfunction

DESCRIPTION

This DTC is stored when a malfunction of the LIN communication between the power management control ECU and certification ECU is detected.

Tech Tips

When the power management control ECU is replaced with a new one and the cable is connected to the negative (-) battery terminal, the power source mode is reset to on (IG). When the battery is removed and reinstalled, the power source mode that was selected when the battery was removed is restored.

DTC Code DTC Detection Condition Trouble Area
B2287 LIN communication between the power management control ECU and certification ECU is malfunctioning.

  • AM2 NO. 2 fuse

  • LIN communication line

  • Power management control ECU

  • Certification ECU

  • Harness or connector

WIRING DIAGRAM

A01INAGE02

INSPECTION PROCEDURE

Note


  • When using the intelligent tester with the engine switch off to troubleshoot: Connect the intelligent tester to the vehicle, and turn a courtesy light switch on and off at 1.5 second intervals until communication between the intelligent tester and vehicle begins.

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

PROCEDURE


  1. CHECK FOR DTC


    1. Clear the DTCs Click here.

    2. Check for DTCs of the power management control ECU (B2287) Click here.

    3. Check for DTCs of the certification ECU (B2785) Click here.

      Result
      Result Proceed to
      No DTC output A
      B2287 and B2785 are output B
      B2785 is not output but B2287 is output C

    B

    GO TO LIN COMMUNICATION SYSTEM (DTC B2785) Click here

    C

    Click here

    A

    USE SIMULATION METHOD TO CHECK Click here

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


    1. A01IUFQE04
      Text in Illustration
      *1

      Rear view of wire harness connector

      (to Power Management Control ECU)

      Disconnect the H71 power management control ECU connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      H71-2 (AM21) - Body ground Always 9.5 to 16 V
      H71-1 (AM22) - Body ground

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU - BODY GROUND)


    1. Disconnect the H71 power management control ECU connector.

    2. A01IUFQE05
      Text in Illustration
      *1

      Rear view of wire harness connector

      (to Power Management Control ECU)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      H71-6 (GND) - Body ground Always Below 1 Ω
      H71-5 (GND2) - Body ground

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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


    1. Disconnect the H71 power management control ECU connector.

      A01IOZFE02

    2. Disconnect the H51 certification ECU connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      H71-24 (LIN2) - H51-29 (LIN) Always Below 1 Ω
      H71-24 (LIN2) - Body ground Always 10 kΩ or higher
      Text in Illustration
      *1

      Rear view of wire harness connector

      (to Power Management Control ECU)

      		 *2

      Rear view of wire harness connector

      (to Certification ECU)
      Result
      Result Proceed to
      OK (for LHD) A
      OK (for RHD) B
      NG C

    B

    REPLACE POWER MANAGEMENT CONTROL ECU Click here

    C

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    A

    REPLACE POWER MANAGEMENT CONTROL ECU Click here