LIN COMMUNICATION SYSTEM, Diagnostic DTC:B2325

DTC Code DTC Name
B2325 LIN Communication Bus Malfunction

DESCRIPTION

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

  • Wire harness

Tech Tips

*: w/ Sliding Roof System

WIRING DIAGRAM

A01GINOE01

INSPECTION PROCEDURE

Note

When using the intelligent tester with the engine 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.

Tech Tips

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.

PROCEDURE


  1. CLEAR DTC


    1. Delete the DTC Click here.


    NEXT

  2. CHECK FOR DTC


    1. Recheck for DTC Click here.

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

    B

    USE SIMULATION METHOD TO CHECK Click here

    A

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

    A01GK0RE04

    1. Disconnect the L11 ECU connector.

    2. Disconnect the N13 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) - Body ground Always 10 kΩ or higher
      Standard voltage
      Tester Connection Switch Condition Specified Condition
      L11-10 (LIN2) - Body ground Engine switch on (IG) Below 1 V

    OK

    REPLACE MAIN BODY ECU

    NG

  4. CLEAR DTC


    1. Reconnect the L11 ECU connector.

    2. Delete the DTC Click here.


    NEXT

  5. CHECK FOR DTC


    1. Disconnect the N13 switch connector.

    2. Recheck for DTC Click here.

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

    B

    REPLACE MASTER SWITCH ASSEMBLY Click here

    A

  6. CLEAR DTC


    1. Reconnect the N13 switch connector.

    2. Delete the DTC Click here.


    NEXT

  7. CHECK FOR DTC


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

      Tech Tips

      *1: for LHD

      *2: for RHD

    2. Recheck for DTC Click here.

      Result:
      Result Proceed to
      DTC B2325 output reoccurs A
      DTC B2321 output occurs B

    B

    REPLACE FRONT POWER WINDOW REGULATOR MOTOR Click here

    A

  8. CLEAR DTC


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

      Tech Tips

      *1: for LHD

      *2: for RHD

    2. Delete the DTC Click here.


    NEXT

  9. CHECK FOR DTC


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

      Tech Tips

      *1: for LHD

      *2: for RHD

    2. Recheck for DTC Click here.

      Result:
      Result Proceed to
      DTC B2325 output reoccurs A
      DTC B2322 output occurs B

    B

    REPLACE FRONT POWER WINDOW REGULATOR MOTOR Click here

    A

  10. CLEAR DTC


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

      Tech Tips

      *1: for LHD

      *2: for RHD

    2. Delete the DTC Click here.


    NEXT

  11. CHECK FOR DTC


    1. Disconnect the O8 motor connector.

    2. Recheck for DTC Click here.

      Result:
      Result Proceed to
      DTC B2325 output reoccurs A
      DTC B2323 output occurs B

    B

    REPLACE REAR POWER WINDOW REGULATOR MOTOR RH Click here

    A

  12. CLEAR DTC


    1. Reconnect the O8 motor connector.

    2. Delete the DTC Click here.


    NEXT

  13. CHECK FOR DTC


    1. Disconnect the O19 motor connector.

    2. Recheck for DTC Click here.

      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 C

    B

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    C

    REPLACE REAR POWER WINDOW REGULATOR MOTOR LH Click here

    A

  14. CLEAR DTC


    1. Reconnect the O19 motor connector.

    2. Delete the DTC Click here.


    NEXT

  15. CHECK FOR DTC


    1. Disconnect the X5 gear connector.

    2. Recheck for DTC Click here.

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

    B

    REPLACE SLIDING ROOF DRIVE GEAR Click here

    A

    REPAIR OR REPLACE HARNESS OR CONNECTOR