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 (cowl side junction block LH) 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 (cowl side junction block LH) for 10 seconds or more.

  • Rear power window regulator motor RH

  • Main body ECU (cowl side junction block LH)

  • Harness or connector

WIRING DIAGRAM

A01EN67E17

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 intelligent tester and vehicle begins.

Tech Tips

DTC B2325 is stored when the communication between the rear power window regulator motor and main body ECU (cowl side junction block LH) 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 - REAR POWER WINDOW REGULATOR MOTOR RH)

    A01EP7ME03

    1. Disconnect the E3 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
      E3-10 (LIN2) - J4-9 (LIN) Always Below 1 Ω
      E3-10 (LIN2) or J4-9 (LIN) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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


    1. A01EO98E14

      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 B

    B

    REPLACE MAIN BODY ECU (COWL SIDE JUNCTION BLOCK LH)

    A

    END (REAR POWER WINDOW REGULATOR MOTOR RH IS DEFECTIVE)