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LIN COMMUNICATION SYSTEM, Diagnostic DTC:B2323

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DTC Code DTC Name
B2323 Rear Door RH ECU Communication Stop
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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 Code DTC Detection Condition Trouble Area
B2323 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
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WIRING DIAGRAM

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INSPECTION PROCEDURE

Note:

  • When using the intelligent tester with the ignition 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 and bulbs for circuits related to this system before performing the following inspection procedure.

Tip:

When communication between the rear power window regulator motor assembly RH and main body ECU (multiplex network body ECU) stops, DTC B2325 is also stored.

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PROCEDURE


  1. Click here

    CLEAR DTC


    1. Clear the DTCs (Click here).


  2. Click here

    CHECK FOR DTC


    1. Check for DTCs (Click here).

      OK
      DTC B2323 is not output.

  3. Click here

    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 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

  4. Click here

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


    1. A01DQDDE08

      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
      Table 1. Text in Illustration
      *a

      Front view of wire harness connector

      (to Rear Power Window Regulator Motor Assembly RH)

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    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).


  6. Click here

    CLEAR DTC


    1. Clear the DTCs (Click here).


  7. Click here

    CHECK FOR DTC


    1. Check for DTCs (Click here).

      OK
      DTC B2323 is not output.

  8. Click here

    END (REAR POWER WINDOW REGULATOR MOTOR RH IS DEFECTIVE)

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    USE SIMULATION METHOD TO CHECKClick here

  10. Click here

    REPAIR OR REPLACE HARNESS OR CONNECTOR

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    REPAIR OR REPLACE HARNESS OR CONNECTOR

  12. Click here

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