LIN COMMUNICATION SYSTEM, Diagnostic DTC:B2324

DTC Code DTC Name
B2324 Rear Door LH ECU Communication Stop

DESCRIPTION

This DTC is stored when LIN communication between the rear door window regulator LH and main body ECU (instrument panel junction block assembly) stops for 10 seconds or more.

DTC Code DTC Detection Condition Trouble Area
B2324 No communication between the rear door window regulator LH and main body ECU (instrument panel junction block assembly) for 10 seconds or more.

  • Rear door window regulator LH

  • Main body ECU (instrument panel junction block assembly)

  • Harness or connector

WIRING DIAGRAM

A0054MLE03

CAUTION / NOTICE / HINT

Note


  • When using the intelligent tester with the ignition 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.

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

Tech Tips

When the communication between the rear door window regulator LH and main body ECU (instrument panel junction block assembly) stops, DTC B2325 is also stored.

PROCEDURE


  1. CLEAR DTC


    1. Clear the DTCs Click here.


    NEXT

  2. CHECK FOR DTC


    1. Recheck for DTCs Click here.

      Result
      Result Proceed to
      DTC B2324 is output A
      DTC B2324 is not output B

    B

    USE SIMULATION METHOD TO CHECK Click here

    A

  3. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - REAR DOOR WINDOW REGULATOR LH)

    A0054FXE02
    Text in Illustration
    *1

    Front view of wire harness connector

    (to Main Body ECU)
    *2

    Front view of wire harness connector

    (to Rear Door Window Regulator LH)

    1. Disconnect the D79 ECU connector.

    2. Disconnect the F9 regulator connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      D79-23 (LIN2) - F9-9 (LIN) Always Below 1 Ω
      D79-23 (LIN2) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. CHECK HARNESS AND CONNECTOR (REAR DOOR WINDOW REGULATOR LH - BATTERY AND BODY GROUND)


    1. A0052NSE02
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Rear Door Window Regulator LH)

      Disconnect the F9 regulator connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      F9-1 (GND) - Body ground Always Below 1 Ω
      Standard Voltage
      Tester Connection Condition Specified Condition
      F9-2 (B) - Body ground Always 11 to 14 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. REPLACE REAR DOOR WINDOW REGULATOR ASSEMBLY LH


    1. Temporarily replace the rear door window regulator LH with a new or normally functioning one Click here.

    2. Clear the DTCs Click here.


    NEXT

  6. CHECK FOR DTC


    1. Recheck for DTCs Click here.

      Result
      Result Proceed to
      DTC B2324 is not output A
      DTC B2324 is output B

    A

    END (REAR DOOR WINDOW REGULATOR LH IS DEFECTIVE)

    B

    REPLACE MAIN BODY ECU (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY)