LIN COMMUNICATION SYSTEM, Diagnostic DTC:B2324

DTC Code DTC Name
B2324 Rear Door LH ECU Communication Stop

DESCRIPTION

This DTC is stored when LIN communication between the power window regulator motor assembly (for rear LH side) and main body ECU (multiplex network body ECU) stops for 10 seconds or more.

DTC No. DTC Detection Condition Trouble Area
B2324 No communication between rear door window regulator assembly (for rear LH side) and main body ECU (multiplex network body ECU) for 10 seconds or more.

  • Rear door window regulator assembly (for rear LH side)

  • Main body ECU (multiplex network body ECU)

  • Instrument panel junction block assembly

  • Wire harness or connector

  • DOOR RL fuse

WIRING DIAGRAM

A003UUIE52

INSPECTION PROCEDURE

Tech Tips

When the main body ECU (multiplex network body ECU) has been replaced with a new part, and the cable from the negative (-) battery terminal is reconnected, the power switch will be on (IG). Also, when the battery has been removed and installed, the condition will be the same as it was before the battery was disconnected.

Note


  • Inspect the fuses for circuits related to this system before performing the following inspection procedure.

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

  • When using the intelligent tester to troubleshoot with the power 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 intelligent tester and vehicle begins.

PROCEDURE


  1. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY


    1. Remove the instrument panel junction block assembly.

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

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

      Tech Tips

      This inspection is to check the LIN line in the instrument panel junction block assembly that connects the wire harness to the built-in main body ECU (multiplex network body ECU).

      Standard Resistance
      Tester Connection Condition Specified Condition
      2D-26 (LIN2) - MB-16 (LIN2) Always Below 1 Ω
      2D-26 (LIN2) - Body ground Always 10 kΩ or higher

    NG

    REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

    OK

  2. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - POWER WINDOW REGULATOR MOTOR)


    1. Disconnect the K6 power window regulator motor assembly (for rear LH side) connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      2D-26 (LIN2) - K6-9 (LIN) Always Below 1 Ω
      2D-26 (LIN2) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. CHECK HARNESS AND CONNECTOR (POWER WINDOW REGULATOR MOTOR - BATTERY, BODY GROUND)


    1. A003TJ5E42
      Text in Illustration
      *1

      Front view of wire harness or connector

      (to Power Window Regulator Motor Assembly (for Rear LH Side))

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      K6-2 (B) - Body ground Power switch off 11 to 14 V

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      K6-1 (GND) - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. REPLACE REAR DOOR WINDOW REGULATOR ASSEMBLY (for REAR LH SIDE)


    1. Replace the rear door window regulator assembly (for rear LH side) Click here.


    NEXT

  5. CHECK DTC OUTPUT


    1. Clear the DTCs Click here.

    2. Check for DTCs.

      OK
      DTC B2324 is not output.

    NG

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

    OK

    END (REAR DOOR WINDOW REGULATOR ASSEMBLY WAS DEFECTIVE)