LIN COMMUNICATION SYSTEM, Diagnostic DTC:B2322

DTC Code DTC Name
B2322 Front Passenger Side Door ECU Communication Stop

DESCRIPTION


This DTC is output when LIN communication between the front power window regulator motor assembly RH*1 or front power window regulator motor assembly LH*2 and main body ECU (multiplex network body ECU) stops for 10 seconds or more.

DTC Code DTC Detection Condition Trouble Area
B2322 No communication between front power window regulator motor assembly RH*1 or front power window regulator motor assembly LH*2 and main body ECU (multiplex network body ECU) for 10 seconds or more

  • Main body ECU (multiplex network body ECU)

  • Front multiplex network door ECU RH*1

  • Front multiplex network door ECU LH*2

  • Front power window regulator motor assembly RH*1

  • Front power window regulator motor assembly LH*2

  • Harness or connector

WIRING DIAGRAM

A000PC0E20
A000PC0E21

CAUTION / NOTICE / HINT

Note


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

    Connect the GTS to the vehicle, and turn a courtesy switch on and off at 1.5 seconds intervals until communication between the GTS and vehicle begins.

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

  • When a power window regulator motor assembly is replaced or removed and reinstalled, it requires initialization Click here.

  • If the main body ECU (multiplex network body ECU) is replaced, refer to the Service Bulletin.

Tech Tips

DTC B2325 is output when the communication between all of the following components and main body ECU (multiplex network body ECU) stops.

PROCEDURE


  1. CLEAR DTC


    1. Clear the DTCs Click here.


    NEXT

  2. CHECK FOR DTC


    1. Check for DTCs Click here.

      Result
      Result Proceed to
      DTC B2322 is output A
      DTC B2322 is not output B

    B

    USE SIMULATION METHOD TO CHECK Click here

    A

  3. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU [MULTIPLEX NETWORK BODY ECU] - FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY)


    1. Remove the main body ECU (multiplex network body ECU) from the cowl side junction block LH Click here.

    2. Disconnect the Q2 front power window regulator motor assembly RH*1 or Q17 front power window regulator motor assembly LH*2 connector.


      • *1: for LHD

      • *2: for RHD

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

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      A-16 (LIN2) - Q2-9 (LIN) Always Below 1 Ω
      A-16 (LIN2) - Body ground Always 10 kΩ or higher
      for RHD
      Tester Connection Condition Specified Condition
      A-16 (LIN2) - Q17-9 (LIN) Always Below 1 Ω
      A-16 (LIN2) - Body ground Always 10 kΩ or higher

    NG

    CHECK HARNESS AND CONNECTOR (MAIN BODY ECU [MULTIPLEX NETWORK BODY ECU] - FRONT MULTIPLEX NETWORK DOOR ECU) Click here

    OK

  4. CHECK HARNESS AND CONNECTOR (FRONT MULTIPLEX NETWORK DOOR ECU - BATTERY AND BODY GROUND)

    A000PHNE01
    Text in Illustration
    *A for LHD
    *B for RHD
    *a

    Front view of wire harness connector

    (to Front Multiplex Network Door ECU)

    1. Disconnect the front multiplex network door ECU RH*1 or front multiplex network door ECU LH*2 connector.


      • *1: for LHD

      • *2: for RHD

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

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      Q4-1 (GND) - Body ground Always Below 1 Ω
      for RHD
      Tester Connection Condition Specified Condition
      Q19-1 (GND) - Body ground Always Below 1 Ω

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

      Standard Voltage
      for LHD
      Tester Connection Condition Specified Condition
      Q4-6 (BDR) - Q4-1 (GND) Always 11 to 14 V
      for RHD
      Tester Connection Condition Specified Condition
      Q19-6 (BDR) - Q19-1 (GND) Always 11 to 14 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. CHECK HARNESS AND CONNECTOR (FRONT MULTIPLEX NETWORK DOOR ECU - FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY)


    • *1: for LHD

    • *2: for RHD


    1. Disconnect the Q4 front multiplex network door ECU RH*1 or Q19 front multiplex network door ECU LH*2 connector.

    2. Disconnect the Q2 front power window regulator motor assembly RH*1 or Q17 front power window regulator motor assembly LH*2 connector.

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

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      Q4-5 (BDRJ) - Q2-2 (B) Always Below 1 Ω
      Q4-2 (PWE) - Q2-1 (E) Always Below 1 Ω
      Q4-2 (PWE) - Body ground Always 10 kΩ or higher
      Q4-5 (BDRJ) - Body ground Always 10 kΩ or higher
      for RHD
      Tester Connection Condition Specified Condition
      Q19-5 (BDRJ) - Q17-2 (B) Always Below 1 Ω
      Q19-2 (PWE) - Q17-1 (E) Always Below 1 Ω
      Q19-2 (PWE) - Body ground Always 10 kΩ or higher
      Q19-5 (BDRJ) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  6. CHECK FRONT MULTIPLEX NETWORK DOOR ECU

    A000RSYE01
    Text in Illustration
    *A for LHD
    *B for RHD
    *a

    Front view of wire harness connector

    (to Front Power Window Regulator Motor Assembly)

    1. Disconnect the front power window regulator motor assembly RH*1 or front power window regulator motor assembly LH*2 connector.


      • *1: for LHD

      • *2: for RHD

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

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      Q2-1 (E) - Body ground Always Below 1 Ω
      for RHD
      Tester Connection Condition Specified Condition
      Q17-1 (E) - Body ground Always Below 1 Ω

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

      Standard Voltage
      for LHD
      Tester Connection Condition Specified Condition
      Q2-2 (B) - Body ground Always 11 to 14 V
      for RHD
      Tester Connection Condition Specified Condition
      Q17-2 (B) - Body ground Always 11 to 14 V
      Result
      Result Proceed to
      OK A
      NG (for LHD) B
      NG (for RHD) C

    B

    REPLACE FRONT MULTIPLEX NETWORK DOOR ECU RH Click here

    C

    REPLACE FRONT MULTIPLEX NETWORK DOOR ECU LH Click here

    A

  7. REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY


    1. for LHD


      1. Temporarily replace the front power window regulator motor assembly RH with a new or normally functioning one Click here.

    2. for RHD


      1. Temporarily replace the front power window regulator motor assembly LH with a new or normally functioning one Click here.


    NEXT

  8. CHECK FOR DTC


    1. Clear the DTCs Click here.

    2. Check for DTCs Click here.

      OK
      DTC B2321 is not output.

    OK

    END (FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY IS DEFECTIVE)

    NG

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Click here

  9. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU [MULTIPLEX NETWORK BODY ECU] - FRONT MULTIPLEX NETWORK DOOR ECU)


    1. Remove the main body ECU (multiplex network body ECU) from the cowl side junction block LH Click here.

    2. Disconnect the Q3 front multiplex network door ECU RH*1 or Q18 front multiplex network door ECU LH*2 connector.


      • *1: for LHD

      • *1: for RHD

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

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      A-16 (LIN2) - Q3-18 (LIN1) Always Below 1 Ω
      A-16 (LIN2) - Body ground Always 10 kΩ or higher
      for RHD
      Tester Connection Condition Specified Condition
      A-16 (LIN2) - Q18-18 (LIN1) Always Below 1 Ω
      A-16 (LIN2) - Body ground Always 10 kΩ or higher

    NG

    CHECK HARNESS AND CONNECTOR (COWL SIDE JUNCTION BLOCK LH - FRONT MULTIPLEX NETWORK DOOR ECU RH) Click here

    OK

  10. CHECK HARNESS AND CONNECTOR (FRONT MULTIPLEX NETWORK DOOR ECU - FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY)


    • *1: for LHD

    • *2: for RHD


    1. Disconnect the Q3 front multiplex network door ECU RH *1 or Q18 front multiplex network door ECU LH*2 connector.

    2. Disconnect the Q2 front power window regulator motor assembly RH*1 or Q17 front power window regulator motor assembly LH*1 connector.

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

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      Q3-9 (LIN3) - Q2-9 (LIN) Always Below 1 Ω
      Q3-9 (LIN3) - Body ground Always 10 kΩ or higher
      for RHD
      Tester Connection Condition Specified Condition
      Q18-9 (LIN3) - Q17-9 (LIN) Always Below 1 Ω
      Q18-9 (LIN3) - Body ground Always 10 kΩ or higher
      Result
      Result Result
      NG A
      OK (for LHD) B
      OK (for RHD) C

    A

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    B

    REPLACE FRONT MULTIPLEX NETWORK DOOR ECU RH Click here

    C

    REPLACE FRONT MULTIPLEX NETWORK DOOR ECU LH Click here

  11. CHECK HARNESS AND CONNECTOR (COWL SIDE JUNCTION BLOCK LH - FRONT MULTIPLEX NETWORK DOOR ECU RH)


    • *1 for LHD

    • *2 for RHD


    1. Disconnect the 5A*1 or 5C*2 cowl side junction block LH connector.

    2. Disconnect the Q3 front multiplex network door ECU RH*1 or Q18 front multiplex network door ECU LH*2 connector.

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

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      5A-56 - Q3-18 (LIN1) Always Below 1 Ω
      5A-56 - Body ground Always 10 kΩ or higher
      for RHD
      Tester Connection Condition Specified Condition
      5C-28 - Q18-18 (LIN1) Always Below 1 Ω
      5C-28 - Body ground Always 10 kΩ or higher

    OK

    REPLACE COWL SIDE JUNCTION BLOCK LH Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR