POWER BACK DOOR SYSTEM, Diagnostic DTC:B2228

DTC Code DTC Name
B2228 PBD Unit Motor LH Circuit

DESCRIPTION

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

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

  • Multiplex network door ECU

  • Power back door unit assembly set LH

  • Harness or connector

WIRING DIAGRAM

B0029C8E11
*a Power Back Door Unit Assembly Set LH
*b Multiplex Network Door ECU

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
      Proceed to
      DTC B2228 is not output
      DTC B2228 is output

    DTC B2228 is not output

    USE SIMULATION METHOD TO CHECK Click here

    DTC B2228 is output

  2. INSPECT POWER BACK DOOR UNIT ASSEMBLY SET LH


    1. Fully open the back door.

    2. B0029R4C01
      *a

      Component without harness connected

      (Power Back Door Unit Assembly Set LH)

      Disconnect the 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
      1 (BD+) - Body ground Always 10 kΩ or higher
      2 (BD-) - Body ground Always 10 kΩ or higher
      1 (BD+) - 2 (BD-) Always Below 1 MΩ
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE POWER BACK DOOR UNIT ASSEMBLY SET LH Click here

    OK

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


    1. Disconnect the U19 multiplex network door ECU connector.

    2. Disconnect the U21 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
      U19-3 (BD+) - U21-1 (BD+) Always Below 1 Ω
      U19-4 (BD-) - U21-2 (BD-) Always Below 1 Ω
      U19-3 (BD+) or U21-1 (BD+) - Body ground Always 10 kΩ or higher
      U19-4 (BD-) or U21-2 (BD-) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE MULTIPLEX NETWORK DOOR ECU Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR