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 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 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)

  • Cowl side junction block LH

  • Harness or connector

WIRING DIAGRAM

B001WZ1E03

CAUTION / NOTICE / HINT

Note


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

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

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

Tech Tips

DTC B2325 is stored when the communication between the rear power window regulator motor and main body ECU (multiplex network body ECU) stops.

PROCEDURE


  1. CLEAR DTC


    1. Clear the DTC Click here.


    NEXT

  2. CHECK FOR DTC


    1. Recheck for DTCs Click here.

      Result
      Result Proceed to
      DTC B2323 is output A
      DTC B2323 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] - REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY RH


    1. Disconnect the A main body ECU connector.

    2. Disconnect the J4 motor connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A-16 (LIN2) - J4-9 (LIN) Always Below 1 Ω
      A-16 (LIN2) or J4-9 (LIN) - Body ground Always 10 kΩ or higher

    NG

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

    OK

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


    1. A01XAYLE01
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Rear Power Window Regulator Motor RH)

      Disconnect the J4 motor connector.

    2. Measure the resistance and voltage according to the value(s) in the tables below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      J4-1 (GND) - Body ground Always Below 1 Ω
      Standard Voltage
      Tester Connection Condition Specified Condition
      J4-2 (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 RH with a new or normally functioning one Click here.

    2. Clear the DTC Click here.


    NEXT

  6. CHECK FOR DTC


    1. Recheck for DTCs Click here.

      Result
      Result Proceed to
      DTC B2323 is not output A
      DTC B2323 is output (for LHD) B
      DTC B2323 is output (for RHD) C

    A

    END (REAR POWER WINDOW REGULATOR MOTOR RH IS DEFECTIVE)

    B

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

    C

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

  7. CHECK HARNESS AND CONNECTOR (COWL SIDE JUNCTION BLOCK LH - REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY RH)


    1. Disconnect the 2J cowl side junction block LH connector.

    2. Disconnect the J4 motor connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      2J-13 - J4-9 (LIN) Always Below 1 Ω
      2J-13 or J4-9 (LIN) - Body ground Always 10 kΩ or higher
      Result
      Result Proceed to
      OK (for LHD) A
      OK (for RHD) B
      NG C

    A

    REPLACE COWL SIDE JUNCTION BLOCK LH Click here

    B

    REPLACE COWL SIDE JUNCTION BLOCK LH Click here

    C

    REPAIR OR REPLACE HARNESS OR CONNECTOR