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 assembly 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 assembly RH and main body ECU for 10 seconds or more

  • Rear power window regulator motor assembly RH

  • Main body ECU

  • Wire harness

WIRING DIAGRAM

A01GN78E50

INSPECTION PROCEDURE

Note


  • When using the intelligent tester with the engine 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. Delete 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 MAIN BODY ECU - REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY RH

    A01GKI6E09

    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 REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY RH (BATTERY VOLTAGE AND GROUND)


    1. A01GLO1E27

      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 Engine switch on (IG) 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. CHECK FOR DTC


    1. Delete the DTC Click here.

    2. 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 ASSEMBLY RH IS DEFECTIVE)