LIN COMMUNICATION SYSTEM, Diagnostic DTC:B2325

DTC Code DTC Name
B2325 LIN Communication Bus Malfunction

DESCRIPTION

The main body ECU (driver side junction block assembly) monitors communication between all the ECUs connected to the door bus lines. When the main body ECU (driver side junction block assembly) 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 stored.

DTC No. DTC Detection Condition Trouble Area
B2325 The main body ECU (driver side junction block assembly) 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 sub-assembly)

  • Main body ECU (driver side junction block assembly)

  • Wire harness or connector

WIRING DIAGRAM

A01ELWAE17

INSPECTION PROCEDURE

Note


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

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

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

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

PROCEDURE


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


    1. A01EKECE13
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Multiplex Network Master Switch Assembly)
      *2

      Front view of wire harness connector

      (to Power Window Regulator Motor Assembly (for Driver Side))

      Disconnect the I6 switch connector.

    2. Disconnect the I4 motor connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      I6-16 (LIN2) - I4-9 (LIN) Always Below 1 Ω
      I6-16 (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 D48 and P4 ECU connectors.

      A01EJ3EE07
      Text in Illustration
      *1 for Front Passenger Side *2 for Rear RH Side
      *3 for Rear LH Side *4 w/ Sliding Roof
      *5

      Front view of wire harness connector

      (to Main Body ECU (Driver Side Junction Block Assembly))

      		 *6

      Front view of wire harness connector

      (to Multiplex Network Master Switch Assembly)
      *7

      Front view of wire harness connector

      (to Sliding Roof ECU (Sliding Roof Drive Gear Sub-assembly))

      		 *8

      Front view of wire harness connector

      (to Power Window Regulator Motor Assembly (for Each Door))

    2. Disconnect the H4, J2 and K2 motor connectors.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      D48-10 (LIN2) - I6-17 (LIN1) Always Below 1 Ω
      D48-10 (LIN2) - H4-9 (LIN) Always Below 1 Ω
      D48-10 (LIN2) - K2-9 (LIN) Always Below 1 Ω
      D48-10 (LIN2) - J2-9 (LIN) Always Below 1 Ω
      D48-10 (LIN2) - P4-4 (LIN) Always Below 1 Ω
      D48-10 (LIN2) - Body ground Always 10 kΩ or higher
      Standard Voltage
      Tester Connection Condition Specified Condition
      D48-10 (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 D48 and P4 ECU connectors.

    2. Reconnect the H4, J2 and K2 motor connectors.

    3. Reconnect the I6 switch connector.

    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 I4 motor connector.

    2. Disconnect the H4 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 FRONT PASSENGER SIDE) Click here

    A

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


    1. Reconnect the H4 motor connector.

    2. Disconnect the J2 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 J2 motor connector.

    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 LH SIDE) Click here

    A

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


    1. Reconnect the K2 motor connector.

    2. Disconnect the I6 switch 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 MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY Click here

    A

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


    1. Reconnect the I6 switch connector.

    2. Disconnect the P4 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 SUB-ASSEMBLY) Click here

    A

    REPLACE MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK ASSEMBLY) Click here