LIN COMMUNICATION SYSTEM, Diagnostic DTC:B2323

DTC Code DTC Name
B2323 Rear Door RH ECU Communication Stop

DESCRIPTION

This DTC is output when LIN communication between the rear power window regulator motor RH and main body ECU stops for 10 seconds or more.

DTC Code DTC Detection Condition Trouble Area
B2323 No communication between rear power window regulator motor RH and main body ECU for 10 seconds or more

  • Rear power window regulator motor RH

  • Main body ECU

  • Harness or connector

WIRING DIAGRAM

A01H26NE77

INSPECTION PROCEDURE

Note


  • When using the intelligent tester with the power switch off to troubleshoot:

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

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

Tech Tips

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

PROCEDURE


  1. CLEAR DTC


    1. Clear the DTC Click here.


    NEXT

  2. CHECK FOR DTC


    1. Recheck for DTC Click here.

      Result:
      Result Proceed to
      DTC B2323 output reoccurs A
      DTC B2323 output does not reoccur B

    B

    USE SIMULATION METHOD TO CHECK Click here

    A

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

    A01H127E05

    1. Disconnect the L11 ECU connector.

    2. Disconnect the O8 motor connector.

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

      Standard resistance
      Tester Connection Condition Specified Condition
      L11-10 (LIN2) - O8-9 (LIN) Always Below 1 Ω
      L11-10 (LIN2) or O8-9 (LIN) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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


    1. A01GXJBE10

      Disconnect the O8 motor connector.

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

      Standard resistance
      Tester Connection Condition Specified Condition
      O8-1 (E) - Body ground Always Below 1 Ω
      Standard voltage
      Tester Connection Switch Condition Specified Condition
      O8-2 (B) - Body ground Power switch on (IG) 11 to 14 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. CHECK REAR POWER WINDOW REGULATOR MOTOR RH (OPERATION)


    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 DTC Click here.

      Result:
      Result Proceed to
      DTC B2323 output does not reoccur A
      DTC B2323 output reoccurs B

    B

    REPLACE MAIN BODY ECU

    A

    END (REAR POWER WINDOW REGULATOR MOTOR RH IS DEFECTIVE)