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LIN COMMUNICATION SYSTEM, Diagnostic DTC:B2322

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DTC Code DTC Name
B2322 Front Passenger Side Door ECU Communication Stop
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DESCRIPTION

This DTC is stored when LIN communication between the front door window regulator RH*1 or LH*2 and main body ECU (instrument panel junction block assembly) stops for 10 seconds or more.


DTC Code DTC Detection Condition Trouble Area
B2322 No communication between the front door window regulator RH*1 or LH*2 and main body ECU (instrument panel junction block assembly) for 10 seconds or more.

  • Front door window regulator RH*1

  • Front door window regulator LH*2

  • Main body ECU (instrument panel junction block assembly)

  • Harness or connector

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WIRING DIAGRAM

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INSPECTION PROCEDURE

Note:

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

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

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

Tip:

When communication between the front door window regulator RH*1 or LH*2 and main body ECU (instrument panel junction block assembly) stops, DTC B2325 is also stored.


  • *1: for LHD

  • *2: for RHD

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PROCEDURE


  1. Click here

    CLEAR DTC


    1. Clear the DTCs (Click here).


  2. Click here

    CHECK FOR DTC


    1. Check for DTCs (Click here).

      Table 1. Result
      Result Proceed to
      DTC B2322 is output A
      DTC B2322 is not output B

  3. Click here

    CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - FRONT DOOR WINDOW REGULATOR)


    1. A01ISZ2E07

      Disconnect the H79 ECU connector.

    2. Disconnect the J8*1 or K10*2 regulator 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
      H79-23 (LIN2) - J8-9 (LIN) Always Below 1 Ω
      for RHD
      Tester Connection Condition Specified Condition
      H79-23 (LIN2) - K10-9 (LIN) Always Below 1 Ω
      Table 2. Text in Illustration
      *1 for LHD
      *2 for RHD
      *3

      Front view of wire harness connector

      (to Main Body ECU)
      *4

      Front view of wire harness connector

      (to Front Door Window Regulator RH [for LHD])

      (to Front Door Window Regulator LH [for RHD])

  4. Click here

    CHECK HARNESS AND CONNECTOR (FRONT DOOR WINDOW REGULATOR - BATTERY AND BODY GROUND)


    1. A01ITC9E07

      Disconnect the J8*1 or K10*2 regulator connector.


      • *1: for LHD

      • *2: for RHD

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

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      J8-1 (GND) - Body ground Always Below 1 Ω
      for RHD
      Tester Connection Condition Specified Condition
      K10-1 (GND) - Body ground Always Below 1 Ω
      Standard Voltage
      for LHD
      Tester Connection Condition Specified Condition
      J8-2 (B) - Body ground Always 11 to 14 V
      for RHD
      Tester Connection Condition Specified Condition
      K10-2 (B) - Body ground Always 11 to 14 V
      Table 3. Text in Illustration
      *1 for LHD
      *2 for RHD
      *3

      Front view of wire harness connector

      (to Front Door Window Regulator RH [for LHD])

      (to Front Door Window Regulator LH [for RHD])

  5. Click here

    REPLACE FRONT DOOR WINDOW REGULATOR ASSEMBLY


    1. Temporarily replace the front door window regulator assembly RH*1 or LH*2 with a new or normally functioning one (Click here).


      • *1: for LHD

      • *2: for RHD

    2. Clear the DTCs (Click here).


  6. Click here

    CHECK FOR DTC


    1. Check for DTCs (Click here).

      Table 4. Result
      Result Proceed to
      DTC B2322 is not output A
      DTC B2322 is output B

  7. Click here

    USE SIMULATION METHOD TO CHECKClick here

  8. Click here

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  9. Click here

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  10. Click here

    REPLACE MAIN BODY ECU (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY)

  11. Click here

    END (FRONT DOOR WINDOW REGULATOR IS DEFECTIVE)