LIN COMMUNICATION SYSTEM, Diagnostic DTC:B2324

DTC Code DTC Name
B2324 Rear Door LH ECU Communication Stop

DESCRIPTION

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

DTC Code DTC Detection Condition Trouble Area
B2324 No communication between rear power window regulator motor assembly LH and main body ECU for 10 seconds or more

  • Rear power window regulator motor assembly LH

  • Main body ECU

  • Wire harness

WIRING DIAGRAM

A01GN78E51

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 B2324 output reoccurs A
      DTC B2324 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 LH

    A01GMXRE05

    1. Disconnect the L11 ECU connector.

    2. Disconnect the O19 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) - O19-9 (LIN) Always Below 1 Ω
      L11-10 (LIN2) or O19-9 (LIN) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. CHECK REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY LH (BATTERY VOLTAGE AND GROUND)


    1. A01GLO1E28

      Disconnect the O19 motor connector.

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

      Standard resistance
      Tester Connection Condition Specified Condition
      O19-1 (E) - Body ground Always Below 1 Ω
      Standard voltage
      Tester Connection Switch Condition Specified Condition
      O19-2 (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 LH


    1. Temporarily replace the rear power window regulator motor assembly LH 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 B2324 output does not reoccur A
      DTC B2324 output reoccurs B

    B

    REPLACE MAIN BODY ECU

    A

    END (REAR POWER WINDOW REGULATOR MOTOR LH IS DEFECTIVE)