POWER BACK DOOR SYSTEM, Diagnostic DTC:B2228

DTC Code DTC Name
B2228 PBD Unit Motor LH Circuit

DESCRIPTION

This DTC is stored when the multiplex network door ECU detects a malfunction of the power back door unit assembly set LH motor.

DTC No. Detection Item DTC Detection Condition Trouble Area
B2228 PBD Unit Motor LH Circuit The multiplex network door ECU detects a malfunction of the power back door unit assembly set LH motor.

  • Multiplex network door ECU

  • Power back door unit assembly set LH

  • Wire harness or connector

WIRING DIAGRAM

A002A6PE06
*a Multiplex Network Door ECU
*b Power Back Door Unit Assembly Set LH

PROCEDURE


  1. CHECK FOR DTC


    1. Clear the DTCs.

      Click here


      Body Electrical > Back Door > Clear DTCs

    2. Check for DTCs.

      Click here


      Body Electrical > Back Door > Trouble Codes
      Result
      Result Proceed to
      DTC B2228 is not output A
      DTC B2228 is output B

    A

    USE SIMULATION METHOD TO CHECK Click here

    B

  2. CHECK HARNESS AND CONNECTOR (MULTIPLEX NETWORK DOOR ECU - POWER BACK DOOR UNIT ASSEMBLY SET LH)


    1. Disconnect the X7 multiplex network door ECU connector.

    2. Disconnect the X1 power back door unit assembly set LH connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      X7-3 (BD+) - X1-1 (BD+) Always Below 1 Ω
      X7-4 (BD-) - X1-2 (BD-) Always Below 1 Ω
      X7-3 (BD+) or X1-1 (BD+) - Body ground Always 10 kΩ or higher
      X7-4 (BD-) or X1-2 (BD-) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. REPLACE POWER BACK DOOR UNIT ASSEMBLY SET LH


    1. Temporarily replace the power back door unit assembly set LH with a new or known good one.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  4. CHECK FOR DTC


    1. Clear the DTCs.

      Click here


      Body Electrical > Back Door > Clear DTCs

    2. Check for DTCs.

      Click here


      Body Electrical > Back Door > Trouble Codes
      Result
      Result Proceed to
      DTC B2228 is not output A
      DTC B2228 is output B

    A

    END (POWER BACK DOOR UNIT ASSEMBLY SET LH WAS DEFECTIVE)

    B

    REPLACE MULTIPLEX NETWORK DOOR ECU Click here