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 (multiplex network 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 (multiplex network body ECU) for 10 seconds or more

  • Main body ECU (multiplex network body ECU)

  • Rear power window regulator motor assembly RH

  • Harness or connector

WIRING DIAGRAM

A01FDT6E01

INSPECTION PROCEDURE

Note


  • When using the GTS with the engine switch off to troubleshoot:

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

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

  • When a power window regulator motor assembly is replaced or removed and reinstalled, it requires initialization Click here.

  • If the main body ECU (multiplex network body ECU) is replaced, refer to the Service Bulletin.

Tech Tips

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

PROCEDURE


  1. CLEAR DTC


    1. Clear the DTCs Click here.


    NEXT

  2. CHECK FOR DTC


    1. Check 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 [MULTIPLEX NETWORK BODY ECU] - REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY RH)


    1. Remove the main body ECU (multiplex network body ECU) from the cowl side junction block LH Click here.

    2. Disconnect the R1 rear power window regulator motor assembly RH connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A-16 (LIN2) - R1-9 (LIN) Always Below 1 Ω
      A-16 (LIN2) - Body ground Always 10 kΩ or higher

    NG

    CHECK HARNESS AND CONNECTOR (COWL SIDE JUNCTION BLOCK LH - REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY RH) Click here

    OK

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

    A01FH96E01
    Text in Illustration
    *a

    Front view of wire harness connector

    (to Rear Power Window Regulator Motor Assembly RH)

    1. Disconnect the rear power window regulator motor assembly RH connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      R1-1 (E) - Body ground Always Below 1 Ω

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      R1-2 (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. Check for DTCs Click here.

      OK
      DTC B2323 is not output.

    NG

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Click here

    OK

    END (REAR POWER WINDOW REGULATOR MOTOR ASSMBLY RH IS DEFECTIVE)

  7. CHECK HARNESS AND CONNECTOR (COWL SIDE JUNCTION BLOCK LH - REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY RH)


    1. Disconnect the 5A cowl side junction block LH connector.

    2. Disconnect the R1 rear power window regulator motor assembly RH connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      5A-56 - R1-9 (LIN) Always Below 1 Ω
      5A-56 - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE COWL SIDE JUNCTION BLOCK LH Click here