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LIN COMMUNICATION SYSTEM, Diagnostic DTC:B2325

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DTC Code DTC Name
B2325 LIN Communication Bus Malfunction
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DESCRIPTION

The main body ECU intermittently monitors the LIN communication bus between the components related to the door and sliding roof. DTC B2325 is output when a malfunction in the LIN communication bus between the components related to the door and sliding roof is detected consecutively 3 times.

DTC Code DTC Detection Condition Trouble Area
B2325 Main body ECU detects malfunction of LIN communication bus between components related to door and sliding roof consecutively 3 times

  • Master switch assembly

  • Front power window regulator motor LH

  • Front power window regulator motor RH

  • Rear power window regulator motor LH

  • Rear power window regulator motor RH

  • Sliding roof drive gear*

  • Main body ECU

  • Harness or connector
Tip:

*: w/ Sliding Roof System

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WIRING DIAGRAM

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INSPECTION PROCEDURE

Note:

When using the intelligent tester with the power 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.

Tip:

When DTC B2325 and a LIN communication stop DTC are output simultaneously, first perform the troubleshooting for the LIN communication stop DTC. Then perform the troubleshooting for DTC B2325.

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PROCEDURE


  1. Click here

    CLEAR DTC


    1. Clear the DTC (see pageClick here).


  2. Click here

    CHECK FOR DTC


    1. Recheck for DTC (see pageClick here).

      Table 1. Result:
      Result Proceed to
      DTC B2325 output reoccurs A
      DTC B2325 output does not reoccur B

  3. Click here

    CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - MASTER SWITCH ASSEMBLY)


    1. Disconnect the L11 ECU connector.

    2. Disconnect the N13 master switch connector.

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

      Standard resistance
      Tester Connection Condition Specified Condition
      L11-10 (LIN2) - N13-17 (LIN1) Always Below 1 Ω
      L11-10 (LIN2) or N13-17 (LIN1) - Body ground Always 10 kΩ or higher
      Standard voltage
      Tester Connection Switch Condition Specified Condition
      L11-10 (LIN2) or N13-17 (LIN1) - Body ground Power switch on (IG) Below 1 V

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    CLEAR DTC


    1. Reconnect the L11 ECU connector.

    2. Clear the DTC (see pageClick here).


  5. Click here

    CHECK FOR DTC


    1. Disconnect the N13 master switch connector.

    2. Recheck for DTC (see pageClick here).

      Table 2. Result:
      Result Proceed to
      DTC B2325 output reoccurs A
      DTC B1206 output occurs B

  6. Click here

    CLEAR DTC


    1. Reconnect the N13 master switch connector.

    2. Clear the DTC (see pageClick here).


  7. Click here

    CHECK FOR DTC


    1. Disconnect the N11*1 or N3*2 motor connector.

      Tip:

      *1: for LHD

      *2: for RHD

    2. Recheck for DTC (see pageClick here).

      Table 3. Result:
      Result Proceed to
      DTC B2325 output reoccurs A
      DTC B2321 output occurs (for LHD) B
      DTC B2321 output occurs (for RHD) C

  8. Click here

    CLEAR DTC


    1. Reconnect the N11*1 or N3*2 motor connector.

      Tip:

      *1: for LHD

      *2: for RHD

    2. Clear the DTC (see pageClick here).


  9. Click here

    CHECK FOR DTC


    1. Disconnect the N3*1 or N11*2 motor connector.

      Tip:

      *1: for LHD

      *2: for RHD

    2. Recheck for DTC (see pageClick here).

      Table 4. Result:
      Result Proceed to
      DTC B2325 output reoccurs A
      DTC B2322 output occurs (for LHD) B
      DTC B2322 output occurs (for RHD) C

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    CLEAR DTC


    1. Reconnect the N3*1 or N11*2 motor connector.

      Tip:

      *1: for LHD

      *2: for RHD

    2. Clear the DTC (see pageClick here).


  11. Click here

    CHECK FOR DTC


    1. Disconnect the O8 motor connector.

    2. Recheck for DTC (see pageClick here).

      Table 5. Result:
      Result Proceed to
      DTC B2325 output reoccurs A
      DTC B2323 output occurs (for LHD) B
      DTC B2323 output occurs (for RHD) C

  12. Click here

    CLEAR DTC


    1. Reconnect the O8 motor connector.

    2. Clear the DTC (see pageClick here).


  13. Click here

    CHECK FOR DTC


    1. Disconnect the O19 motor connector.

    2. Recheck for DTC (see pageClick here).

      Table 6. Result:
      Result Proceed to
      DTC B2325 output reoccurs (w/ Sliding roof system) A
      DTC B2325 output reoccurs (w/o Sliding roof system) B
      DTC B2324 output occurs (for LHD) C
      DTC B2324 output occurs (for RHD) D

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    CLEAR DTC


    1. Reconnect the O19 motor connector.

    2. Clear the DTC (see pageClick here).


  15. Click here

    CHECK FOR DTC


    1. Disconnect the X5 gear connector.

    2. Recheck for DTC (see pageClick here).

      Table 7. Result:
      Result Proceed to
      DTC B2325 output reoccurs A
      DTC B1273 output occurs B

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    USE SIMULATION METHOD TO CHECKClick here

  17. Click here

    REPLACE MAIN BODY ECU

  18. Click here

    REPLACE MASTER SWITCH ASSEMBLYClick here

  19. Click here

    REPLACE FRONT POWER WINDOW REGULATOR MOTOR LHClick here

  20. Click here

    REPLACE FRONT POWER WINDOW REGULATOR MOTOR LHClick here

  21. Click here

    REPLACE REAR POWER WINDOW REGULATOR MOTOR RHClick here

  22. Click here

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  23. Click here

    REPLACE REAR POWER WINDOW REGULATOR MOTOR LHClick here

  24. Click here

    REPLACE SLIDING ROOF DRIVE GEARClick here

  25. Click here

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  26. Click here

    REPLACE FRONT POWER WINDOW REGULATOR MOTOR RHClick here

  27. Click here

    REPLACE FRONT POWER WINDOW REGULATOR MOTOR RHClick here