LIN COMMUNICATION SYSTEM, Diagnostic DTC:B2325

DTC Code DTC Name
B2325 LIN Communication Bus Malfunction

DESCRIPTION

The main body ECU monitors communication between all the ECUs connected to the door bus lines. When the main body ECU detects errors in communication with all the ECUs connected to the door bus lines at 2.6-second intervals and 3 times in a row, DTC B2325 will be output.

DTC Code DTC Detection Condition Trouble Area
B2325 Main body ECU detects errors in communication with the ECUs connected to the door bus lines 3 times in a row.

  • Power window regulator motor assembly (for Driver side)

  • Power window regulator motor assembly (for Front passenger side)

  • Power window regulator motor assembly (for Rear RH side)

  • Power window regulator motor assembly (for Rear LH side)

  • Multiplex network master switch assembly

  • Sliding roof ECU (Sliding roof drive gear assembly)

  • Main body ECU

  • Wire harness or connector

WIRING DIAGRAM

A01CD4ZE24

INSPECTION PROCEDURE

Note


  • When the sliding roof ECU (sliding roof drive gear assembly) is replaced or removed and reinstalled, it requires initialization Click here.

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

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

    Connect the intelligent tester to the DLC3, and turn the courtesy switch on and off at 1.5-second intervals until communication between the tester and vehicle begins.

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR (MASTER SWITCH - DRIVER SIDE POWER WINDOW REGULATOR MOTOR)


    1. Disconnect the J10*1 or I3*2 switch connector.

    2. Disconnect the J4*1 or I4*2 motor connector.


      • *1: for LHD

      • *2: for RHD

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

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      J10-16 (LIN2) - J4-9 (LIN) Always Below 1 Ω
      J10-16 (LIN2) - Body ground Always 10 kΩ or higher
      for RHD
      Tester Connection Condition Specified Condition
      I3-16 (LIN2) - I4-9 (LIN) Always Below 1 Ω
      I3-16 (LIN2) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  2. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - EACH ECU)


    1. Disconnect the G50 and M2 ECU connectors.

    2. Disconnect the J4*1 or I4*2, K2 and L2 motor connectors.


      • *1: for LHD

      • *2: for RHD

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

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      G50-10 (LIN2) - J10-17 (LIN1) Always Below 1 Ω
      G50-10 (LIN2) - I4-9 (LIN) Always Below 1 Ω
      G50-10 (LIN2) - L2-9 (LIN) Always Below 1 Ω
      G50-10 (LIN2) - K2-9 (LIN) Always Below 1 Ω
      G50-10 (LIN2) - M2-3 (L1) Always Below 1 Ω
      G50-10 (LIN2) - Body ground Always 10 kΩ or higher
      for RHD
      Tester Connection Condition Specified Condition
      G50-10 (LIN2) - I3-17 (LIN1) Always Below 1 Ω
      G50-10 (LIN2) - J4-9 (LIN) Always Below 1 Ω
      G50-10 (LIN2) - L2-9 (LIN) Always Below 1 Ω
      G50-10 (LIN2) - K2-9 (LIN) Always Below 1 Ω
      G50-10 (LIN2) - M2-3 (L1) Always Below 1 Ω
      G50-10 (LIN2) - Body ground Always 10 kΩ or higher
      Standard Voltage
      Tester Connection Condition Specified Condition
      G50-10 (LIN2) - Body ground Always Below 1 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. CHECK DTC OUTPUT (POWER WINDOW REGULATOR MOTOR ASSEMBLY (for DRIVER SIDE))


    1. Reconnect the G50 and M2 ECU connectors.

    2. Reconnect the I4*1 or J4*2, K2 and L2 motor connectors.

    3. Reconnect the J10*1 or I3*2 switch connector.


      • *1: for LHD

      • *2: for RHD

    4. Clear the DTC Click here.

    5. Recheck for DTCs.

      Result
      Result Proceed to
      DTC B2325 is output A
      DTC B2325 is not output B

    B

    REPLACE POWER WINDOW REGULATOR MOTOR ASSEMBLY (for DRIVER SIDE) Click here

    A

  4. CHECK DTC OUTPUT (POWER WINDOW REGULATOR MOTOR ASSEMBLY (for FRONT PASSENGER SIDE))


    1. Reconnect the J4*1 or I4*2 motor connector.

    2. Disconnect the I4*1 or J4*2 motor connector.


      • *1: for LHD

      • *2: for RHD

    3. Clear the DTC Click here.

    4. Recheck for DTCs.

      Result
      Result Proceed to
      DTC B2325 is output A
      DTC B2325 is not output B

    B

    REPLACE POWER WINDOW REGULATOR MOTOR ASSEMBLY (for FRONT PASSENGER SIDE) Click here

    A

  5. CHECK DTC OUTPUT (POWER WINDOW REGULATOR MOTOR ASSEMBLY (for REAR RH SIDE))


    1. Reconnect the I4*1 or J4*2 motor connector.


      • *1: for LHD

      • *2: for RHD

    2. Disconnect the K2 motor connector.

    3. Clear the DTC Click here.

    4. Recheck for DTCs.

      Result
      Result Proceed to
      DTC B2325 is output A
      DTC B2325 is not output B

    B

    REPLACE POWER WINDOW REGULATOR MOTOR ASSEMBLY (for REAR RH SIDE) Click here

    A

  6. CHECK DTC OUTPUT (POWER WINDOW REGULATOR MOTOR ASSEMBLY (for REAR LH SIDE))


    1. Reconnect the K2 motor connector.

    2. Disconnect the L2 motor connector.

    3. Clear the DTC Click here.

    4. Recheck for DTCs.

      Result
      Result Proceed to
      DTC B2325 is output A
      DTC B2325 is not output B

    B

    REPLACE POWER WINDOW REGULATOR MOTOR ASSEMBLY (for REAR LH SIDE) Click here

    A

  7. CHECK DTC OUTPUT (MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY)


    1. Reconnect the L2 motor connector.

    2. Disconnect the J10*1 or I3*2 switch connector.


      • *1: for LHD

      • *2: for RHD

    3. Clear the DTC Click here.

    4. Recheck for DTCs.

      Result
      Result Proceed to
      DTC B2325 is output A
      DTC B2325 is not output B

    B

    REPLACE MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY Click here

    A

  8. CHECK DTC OUTPUT (SLIDING ROOF ECU (SLIDING ROOF DRIVE GEAR ASSEMBLY))


    1. Reconnect the J10*1 or I3*2 switch connector.


      • *1: for LHD

      • *2: for RHD

    2. Disconnect the M2 ECU connector.

    3. Clear the DTC Click here.

    4. Recheck for DTCs.

      Result
      Result Proceed to
      DTC B2325 is output A
      DTC B2325 is not output B

    B

    REPLACE SLIDING ROOF ECU (SLIDING ROOF DRIVE GEAR ASSEMBLY) Click here

    A

    REPLACE MAIN BODY ECU Click here