LIN COMMUNICATION SYSTEM, Diagnostic DTC:B2325

DTC Code DTC Name
B2325 LIN Communication Bus Malfunction

DESCRIPTION

The main body ECU (multiplex network body ECU) intermittently monitors the LIN communication bus between the components related to the doors and sliding roof drive gear sub-assembly. DTC B2325 is stored when a malfunction in the LIN communication bus between the components related to the doors and sliding roof drive gear sub-assembly is detected consecutively 3 times.

DTC No. Detection Item DTC Detection Condition Trouble Area
B2325 LIN Communication Bus Malfunction Main body ECU (multiplex network body ECU) detects errors in communication with the ECUs connected to the door bus lines 3 times in a row.

  • Multiplex network master switch assembly

  • Front power window regulator motor assembly LH

  • Front power window regulator motor assembly RH

  • Rear power window regulator motor assembly LH

  • Rear power window regulator motor assembly RH

  • Main body ECU (multiplex network body ECU)

  • Instrument panel junction block assembly

  • Harness or connector

WIRING DIAGRAM


  1. for LHD

    A01MIMKE02

  2. for RHD

    A01MIMKE04

CAUTION / NOTICE / HINT

Note


  • When using the GTS with the power switch off to troubleshoot:

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

  • When the power window regulator motor assembly is removed and reinstalled or replaced, the power window regulator motor assembly must be initialized.

    Click here

  • If the main body ECU (multiplex network body ECU) is replaced, refer to the Service Bulletin.

Tech Tips

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

PROCEDURE


  1. CLEAR DTC


    1. Clear the DTCs.

      Click here


      Body Electrical > Main Body > Clear DTCs
      Result
      Proceed to
      NEXT

    NEXT

  2. CHECK FOR DTC


    1. Check for DTCs.

      Click here


      Body Electrical > Main Body > Trouble Codes
      Result
      Result Proceed to
      DTC B2325 is not output A
      DTC B2325 is output B

    A

    USE SIMULATION METHOD TO CHECK Click here

    B

  3. INSPECT MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY


    1. A01MJTNC05
      *a

      Component without harness connected

      (Multiplex Network Master Switch Assembly)

      Remove the multiplex network master switch assembly.

      Click here

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      N3-16 (LIN2) - N3-17 (LIN1) Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY Click here

    OK

  4. CHECK HARNESS AND CONNECTOR (MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY - FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY)


    1. for LHD


      1. Disconnect the N3 multiplex network master switch assembly connector.

      2. Disconnect the L12 front power window regulator motor assembly LH connector.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        N3-16 (LIN2) - L12-9 (LIN) Always Below 1 Ω
        N3-16 (LIN2) or L12-9 (LIN) - Body ground Always 10 kΩ or higher

    2. for RHD


      1. Disconnect the N3 multiplex network master switch assembly connector.

      2. Disconnect the L3 front 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
        N3-16 (LIN2) - L3-9 (LIN) Always Below 1 Ω
        N3-16 (LIN2) or L3-9 (LIN) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) - MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY)


    1. for LHD


      1. Remove the main body ECU (multiplex network body ECU) from the instrument panel junction block assembly.

        Click here

      2. Disconnect the N3 multiplex network master switch assembly connector.

      3. Disconnect the L3 front power window regulator motor assembly RH connector.

      4. Disconnect the M7 rear power window regulator motor assembly LH connector.

      5. Disconnect the M1 rear power window regulator motor assembly RH connector.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        MB-16 (LIN2) - N3-17 (LIN1) Always Below 1 Ω
        MB-16 (LIN2) or N3-17 (LIN1) - Body ground Always 10 kΩ or higher

    2. for RHD


      1. Remove the main body ECU (multiplex network body ECU) from the instrument panel junction block assembly.

        Click here

      2. Disconnect the N3 multiplex network master switch assembly connector.

      3. Disconnect the L12 front power window regulator motor assembly LH connector.

      4. Disconnect the M7 rear power window regulator motor assembly LH connector.

      5. Disconnect the M1 rear power window regulator motor assembly RH connector.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        MB-16 (LIN2) - N3-17 (LIN1) Always Below 1 Ω
        MB-16 (LIN2) or N3-17 (LIN1) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY) Click here

    OK

  6. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) - FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY)


    1. for LHD


      1. Remove the main body ECU (multiplex network body ECU) from the instrument panel junction block assembly.

        Click here

      2. Disconnect the N3 multiplex network master switch assembly connector.

      3. Disconnect the L3 front power window regulator motor assembly RH connector.

      4. Disconnect the M7 rear power window regulator motor assembly LH connector.

      5. Disconnect the M1 rear power window regulator motor assembly RH connector.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        MB-16 (LIN2) - L3-9 (LIN) Always Below 1 Ω
        MB-16 (LIN2) or L3-9 (LIN) - Body ground Always 10 kΩ or higher

    2. for RHD


      1. Remove the main body ECU (multiplex network body ECU) from the instrument panel junction block assembly.

        Click here

      2. Disconnect the N3 multiplex network master switch assembly connector.

      3. Disconnect the L12 front power window regulator motor assembly LH connector.

      4. Disconnect the M7 rear power window regulator motor assembly LH connector.

      5. Disconnect the M1 rear power window regulator motor assembly RH connector.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        MB-16 (LIN2) - L12-9 (LIN) Always Below 1 Ω
        MB-16 (LIN2) or L12-9 (LIN) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY) Click here

    OK

  7. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) - REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY LH)


    1. for LHD


      1. Remove the main body ECU (multiplex network body ECU) from the instrument panel junction block assembly.

        Click here

      2. Disconnect the N3 multiplex network master switch assembly connector.

      3. Disconnect the L3 front power window regulator motor assembly RH connector.

      4. Disconnect the M7 rear power window regulator motor assembly LH connector.

      5. Disconnect the M1 rear power window regulator motor assembly RH connector.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        MB-16 (LIN2) - M7-9 (LIN) Always Below 1 Ω
        MB-16 (LIN2) or M7-9 (LIN) - Body ground Always 10 kΩ or higher

    2. for RHD


      1. Remove the main body ECU (multiplex network body ECU) from the instrument panel junction block assembly.

        Click here

      2. Disconnect the N3 multiplex network master switch assembly connector.

      3. Disconnect the L12 front power window regulator motor assembly LH connector.

      4. Disconnect the M7 rear power window regulator motor assembly LH connector.

      5. Disconnect the M1 rear power window regulator motor assembly RH connector.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        MB-16 (LIN2) - M7-9 (LIN) Always Below 1 Ω
        MB-16 (LIN2) or M7-9 (LIN) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY LH) Click here

    OK

  8. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) - REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY RH)


    1. for LHD


      1. Remove the main body ECU (multiplex network body ECU) from the instrument panel junction block assembly.

        Click here

      2. Disconnect the N3 multiplex network master switch assembly connector.

      3. Disconnect the L3 front power window regulator motor assembly RH connector.

      4. Disconnect the M7 rear power window regulator motor assembly LH connector.

      5. Disconnect the M1 rear power window regulator motor assembly RH connector.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        MB-16 (LIN2) - M1-9 (LIN) Always Below 1 Ω
        MB-16 (LIN2) or M1-9 (LIN) - Body ground Always 10 kΩ or higher

    2. for RHD


      1. Remove the main body ECU (multiplex network body ECU) from the instrument panel junction block assembly.

        Click here

      2. Disconnect the N3 multiplex network master switch assembly connector.

      3. Disconnect the L12 front power window regulator motor assembly LH connector.

      4. Disconnect the M7 rear power window regulator motor assembly LH connector.

      5. Disconnect the M1 rear power window regulator motor assembly RH connector.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        MB-16 (LIN2) - M1-9 (LIN) Always Below 1 Ω
        MB-16 (LIN2) or M1-9 (LIN) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY RH) Click here

    OK

  9. CHECK FOR DTC


    1. Disconnect the N3 multiplex network master switch assembly connector.

    2. Check for DTCs.

      Click here


      Body Electrical > Main Body > Trouble Codes
      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

  10. CLEAR DTC


    1. Clear the DTCs.

      Click here


      Body Electrical > Main Body > Clear DTCs
      Result
      Proceed to
      NEXT

    NEXT

  11. CHECK FOR DTC


    1. Disconnect the L12 front power window regulator motor assembly LH connector.

    2. Check for DTCs.

      Click here


      Body Electrical > Main Body > Trouble Codes
      Result
      Result Proceed to
      DTC B2325 is output A
      DTC B2325 is not output B

    B

    REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY LH Click here

    A

  12. CLEAR DTC


    1. Clear the DTCs.

      Click here


      Body Electrical > Main Body > Clear DTCs
      Result
      Proceed to
      NEXT

    NEXT

  13. CHECK FOR DTC


    1. Disconnect the L3 front power window regulator motor assembly RH connector.

    2. Check for DTCs.

      Click here


      Body Electrical > Main Body > Trouble Codes
      Result
      Result Proceed to
      DTC B2325 is output A
      DTC B2325 is not output B

    B

    REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY RH Click here

    A

  14. CLEAR DTC


    1. Clear the DTCs.

      Click here


      Body Electrical > Main Body > Clear DTCs
      Result
      Proceed to
      NEXT

    NEXT

  15. CHECK FOR DTC


    1. Disconnect the M1 rear power window regulator motor assembly RH connector.

    2. Check for DTCs.

      Click here


      Body Electrical > Main Body > Trouble Codes
      Result
      Result Proceed to
      DTC B2325 is output A
      DTC B2325 is not output B

    B

    REPLACE REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY RH Click here

    A

  16. CLEAR DTC


    1. Clear the DTCs.

      Click here


      Body Electrical > Main Body > Clear DTCs
      Result
      Proceed to
      NEXT

    NEXT

  17. CHECK FOR DTC


    1. Disconnect the M7 rear power window regulator motor assembly LH connector.

    2. Check for DTCs.

      Click here


      Body Electrical > Main Body > Trouble Codes
      Result
      Result Proceed to
      DTC B2325 is output (for LHD) A
      DTC B2325 is output (for RHD) B
      DTC B2325 is not output C

    A

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

    B

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

    C

    REPLACE REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY LH Click here

  18. CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY)


    1. for LHD


      1. Disconnect the 4B instrument panel junction block assembly connector.

      2. Disconnect the N3 multiplex network master switch assembly connector.

      3. Disconnect the L3 front power window regulator motor assembly RH connector.

      4. Disconnect the M7 rear power window regulator motor assembly LH connector.

      5. Disconnect the M1 rear power window regulator motor assembly RH connector.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        4B-21 - N3-17 (LIN1) Always Below 1 Ω
        4B-21 or N3-17 (LIN1) - Body ground Always 10 kΩ or higher

    2. for RHD


      1. Disconnect the 4B instrument panel junction block assembly connector.

      2. Disconnect the N3 multiplex network master switch assembly connector.

      3. Disconnect the L12 front power window regulator motor assembly LH connector.

      4. Disconnect the M7 rear power window regulator motor assembly LH connector.

      5. Disconnect the M1 rear power window regulator motor assembly RH connector.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        4B-21 - N3-17 (LIN1) Always Below 1 Ω
        4B-21 or N3-17 (LIN1) - Body ground Always 10 kΩ or higher
      Result
      Result Proceed to
      OK (for LHD) A
      OK (for RHD) B
      NG C

    A

    REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Click here

    B

    REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Click here

    C

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  19. CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY)


    1. for LHD


      1. Disconnect the 4B instrument panel junction block assembly connector.

      2. Disconnect the N3 multiplex network master switch assembly connector.

      3. Disconnect the L3 front power window regulator motor assembly RH connector.

      4. Disconnect the M7 rear power window regulator motor assembly LH connector.

      5. Disconnect the M1 rear power window regulator motor assembly RH connector.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        4B-21 - L3-9 (LIN) Always Below 1 Ω
        4B-21 or L3-9 (LIN) - Body ground Always 10 kΩ or higher

    2. for RHD


      1. Disconnect the 4B instrument panel junction block assembly connector.

      2. Disconnect the N3 multiplex network master switch assembly connector.

      3. Disconnect the L12 front power window regulator motor assembly LH connector.

      4. Disconnect the M7 rear power window regulator motor assembly LH connector.

      5. Disconnect the M1 rear power window regulator motor assembly RH connector.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        4B-21 - L12-9 (LIN) Always Below 1 Ω
        4B-21 or L12-9 (LIN) - Body ground Always 10 kΩ or higher
      Result
      Result Proceed to
      OK (for LHD) A
      OK (for RHD) B
      NG C

    A

    REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Click here

    B

    REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Click here

    C

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  20. CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY LH)


    1. for LHD


      1. Disconnect the 4B instrument panel junction block assembly connector.

      2. Disconnect the N3 multiplex network master switch assembly connector.

      3. Disconnect the L3 front power window regulator motor assembly RH connector.

      4. Disconnect the M7 rear power window regulator motor assembly LH connector.

      5. Disconnect the M1 rear power window regulator motor assembly RH connector.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        4B-21 - M7-9 (LIN) Always Below 1 Ω
        4B-21 or M7-9 (LIN) - Body ground Always 10 kΩ or higher

    2. for RHD


      1. Disconnect the 4B instrument panel junction block assembly connector.

      2. Disconnect the N3 multiplex network master switch assembly connector.

      3. Disconnect the L12 front power window regulator motor assembly LH connector.

      4. Disconnect the M7 rear power window regulator motor assembly LH connector.

      5. Disconnect the M1 rear power window regulator motor assembly RH connector.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        4B-21 - M7-9 (LIN) Always Below 1 Ω
        4B-21 or M7-9 (LIN) - Body ground Always 10 kΩ or higher
      Result
      Result Proceed to
      OK (for LHD) A
      OK (for RHD) B
      NG C

    A

    REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Click here

    B

    REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Click here

    C

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  21. CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY RH)


    1. for LHD


      1. Disconnect the 4B instrument panel junction block assembly connector.

      2. Disconnect the N3 multiplex network master switch assembly connector.

      3. Disconnect the L3 front power window regulator motor assembly RH connector.

      4. Disconnect the M7 rear power window regulator motor assembly LH connector.

      5. Disconnect the M1 rear power window regulator motor assembly RH connector.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        4B-21 - M1-9 (LIN) Always Below 1 Ω
        4B-21 or M1-9 (LIN) - Body ground Always 10 kΩ or higher

    2. for RHD


      1. Disconnect the 4B instrument panel junction block assembly connector.

      2. Disconnect the N3 multiplex network master switch assembly connector.

      3. Disconnect the L12 front power window regulator motor assembly LH connector.

      4. Disconnect the M7 rear power window regulator motor assembly LH connector.

      5. Disconnect the M1 rear power window regulator motor assembly RH connector.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        4B-21 - M1-9 (LIN) Always Below 1 Ω
        4B-21 or M1-9 (LIN) - Body ground Always 10 kΩ or higher
      Result
      Result Proceed to
      OK (for LHD) A
      OK (for RHD) B
      NG C

    A

    REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Click here

    B

    REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Click here

    C

    REPAIR OR REPLACE HARNESS OR CONNECTOR