LIN COMMUNICATION SYSTEM, Diagnostic DTC:B2323

DTC Code DTC Name
B2323 Rear Door RH ECU Communication Stop

DESCRIPTION

This DTC is stored when LIN communication between the rear power window regulator motor assembly RH and main body ECU (multiplex network body ECU) stops for 10 seconds or more.

DTC Code DTC Detection Condition Trouble Area
B2323 No communication between the rear power window regulator motor assembly RH and main body ECU (multiplex network body ECU) for 10 seconds or more.

  • Rear power window regulator motor assembly RH

  • Main body ECU (multiplex network body ECU)

  • Driver side junction block assembly

  • Harness or connector

WIRING DIAGRAM

B001FNZE02
B001FNZE03

CAUTION / NOTICE / HINT

Note


  • When using the intelligent tester with the ignition 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 and bulbs for circuits related to this system before performing the following inspection procedure.

Tech Tips

When communication between the rear power window regulator motor assembly RH and main body ECU (multiplex network body ECU) stops, DTC B2325 is also stored.

PROCEDURE


  1. CLEAR DTC


    1. Clear the DTCs Click here.


    NEXT

  2. CHECK FOR DTC


    1. Check for DTCs Click here.

      OK
      DTC B2323 is not output.

    OK

    USE SIMULATION METHOD TO CHECK Click here

    NG

  3. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - REAR POWER WINDOW REGULATOR MOTOR RH)


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

    2. Disconnect the L4 rear power window regulator motor assembly RH connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A-16 (LIN2) - L4-9 (LIN) Always Below 1 Ω
      A-16 (LIN2) or L4-9 (LIN) - Body ground Always 10 kΩ or higher

    NG

    CHECK HARNESS AND CONNECTOR (DRIVER SIDE JUNCTION BLOCK - REAR POWER WINDOW REGULATOR MOTOR RH) Click here

    OK

  4. CHECK HARNESS AND CONNECTOR (REAR POWER WINDOW REGULATOR MOTOR RH - BATTERY AND BODY GROUND)


    1. B001CIOE04
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Rear Power Window Regulator Motor Assembly RH)

      Disconnect the L4 rear power window regulator motor assembly RH connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      L4-1 (GND) - Body ground Always Below 1 Ω

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      L4-2 (B) - Body ground Always 11 to 14 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. REPLACE REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY RH


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


    NEXT

  6. CLEAR DTC


    1. Clear the DTCs Click here.


    NEXT

  7. CHECK FOR DTC


    1. Check for DTCs Click here.

      OK
      DTC B2323 is not output.

    OK

    END (REAR POWER WINDOW REGULATOR MOTOR RH IS DEFECTIVE)

    NG

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

  8. CHECK HARNESS AND CONNECTOR (DRIVER SIDE JUNCTION BLOCK - REAR POWER WINDOW REGULATOR MOTOR RH)


    1. for 5L-E


      1. Disconnect the 2D*1 or 2H*2 driver side junction block assembly connector.


        • *1: for LHD

          *2: for RHD

      2. Disconnect the L4 rear power window regulator motor assembly RH connector.

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

        Standard Resistance
        for LHD
        Tester Connection Condition Specified Condition
        2D-11 - L4-9 (LIN) Always Below 1 Ω
        2D-11 - Body ground Always 10 kΩ or higher
        for RHD
        Tester Connection Condition Specified Condition
        2H-24 - L4-9 (LIN) Always Below 1 Ω
        2H-24 - Body ground Always 10 kΩ or higher

    2. except 5L-E


      1. Disconnect the 2N*1 or 2P*2 driver side junction block assembly connector.


        • *1: for LHD

          *2: for RHD

      2. Disconnect the L4 rear power window regulator motor assembly RH connector.

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

        Standard Resistance
        for LHD
        Tester Connection Condition Specified Condition
        2N-13 - L4-9 (LIN) Always Below 1 Ω
        2N-13 - Body ground Always 10 kΩ or higher
        for RHD
        Tester Connection Condition Specified Condition
        2P-24 - L4-9 (LIN) Always Below 1 Ω
        2P-24 - Body ground Always 10 kΩ or higher

    OK

    REPLACE DRIVER SIDE JUNCTION BLOCK ASSEMBLY Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR