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 assembly RH and main body ECU (multiplex network body ECU) stops for 10 seconds or more.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

B2323

Rear Door RH ECU Communication Stop

No communication between the rear power window regulator motor assembly RH and main body ECU (multiplex network body ECU) for 10 seconds or more.

  • Rear power window regulator motor assembly RH

  • Main body ECU (multiplex network body ECU)

  • Harness or connector

WIRING DIAGRAM

C211493E81

CAUTION / NOTICE / HINT

Note:

  • When using the intelligent tester with the engine switch off to troubleshoot:

    Connect the intelligent tester to the vehicle and turn a courtesy light switch on and off at 1.5 second intervals until communication between the intelligent tester and vehicle begins.

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

  • When the rear power window regulator motor assembly RH is removed and reinstalled or replaced, the rear power window regulator motor assembly RH must be initialized (Click here).

Tip:

When DTC B2323 and B2325 are output simultaneously, perform troubleshooting for DTC B2325 first (Click here).

PROCEDURE

  1. CLEAR DTC

    1. Clear the DTCs

      Click here

      Body Electrical > Main Body > Clear DTCs

    Result

    Result

    NEXT
    NEXT

  2. CHECK FOR DTC

    1. Check for DTCs

      Click here

      Body Electrical > Main Body > Trouble Codes

      OK

      DTC B2323 is not output.

    Result

    Result

    OK

    NG
    OK

    USE SIMULATION METHOD TO CHECK

    Click here

    NG

  3. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - REAR POWER WINDOW REGULATOR MOTOR RH)

    1. Remove the main body ECU (multiplex network body ECU) from the driver side junction block assembly

      Click hereClick here

    2. Disconnect the L4 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) - L4-9 (LIN)

      Always

      Below 1 Ω

      A-16 (LIN2) or L4-9 (LIN) - Body ground

      Always

      10 kΩ or higher

    Result

    Result

    OK

    NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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

    C216965C03

    *a

    Front view of wire harness connector (to Rear Power Window Regulator Motor Assembly RH)

    1. Disconnect the L4 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

      L4-1 (GND) - 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

      L4-2 (B) - Body ground

      Always

      11 to 14 V

    Result

    Result

    OK

    NG
    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

    Result

    Result

    NEXT
    NEXT

  6. CLEAR DTC

    1. Clear the DTCs

      Click here

      Body Electrical > Main Body > Clear DTCs

    Result

    Result

    NEXT
    NEXT

  7. CHECK FOR DTC

    1. Check for DTCs

      Click here

      Body Electrical > Main Body > Trouble Codes

      OK

      DTC B2323 is not output.

    Result

    Result

    OK

    NG
    OK

    END (REAR POWER WINDOW REGULATOR MOTOR RH IS DEFECTIVE)

    NG

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

    Click hereClick here