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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 power window regulator motor RH*1 or LH*2 and main body ECU (cowl side junction block LH) stops for 10 seconds or more.

Tip:

  • *1: for LHD

  • *2: for RHD

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

  • Front power window regulator motor RH*1

  • Front power window regulator motor LH*2

  • Main body ECU (cowl side junction block LH)

  • Harness or connector
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WIRING DIAGRAM

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CAUTION / NOTICE / HINT

Note:

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

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

Tip:

DTC B2325 is stored when the communication between the front power window regulator motor and main body ECU (cowl side junction block LH) stops.

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PROCEDURE


  1. Click here

    CLEAR DTC


    1. Clear the DTC (Click here).


  2. Click here

    CHECK FOR DTC


    1. Recheck 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 POWER WINDOW REGULATOR MOTOR)


    1. Disconnect the E3 ECU connector.

    2. Disconnect the I4*1 or I12*2 motor connector.

      Tip:

      • *1: for LHD

      • *2: for RHD

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      E3-10 (LIN2) - I4-9 (LIN)*1 or I12-9 (LIN)*2 Always Below 1 Ω

    • OKClick here
    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

  4. Click here

    CHECK FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY (BATTERY VOLTAGE AND BODY GROUND)


    1. A01X0TWE01

      Disconnect the I4*1 or I12*2 motor connector.

      Tip:

      • *1: for LHD

      • *2: for RHD

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      I4-1 (GND)*1 or I12-1 (GND)*2 - Body ground Always Below 1 Ω
      Standard Voltage
      Tester Connection Condition Specified Condition
      I4-2 (B)*1 or I12-2 (B)*2 - Body ground Always 11 to 14 V

    • OKClick here
    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

  5. Click here

    REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY


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

      Tip:

      • *1: for LHD

      • *2: for RHD

    2. Clear the DTC (Click here).


  6. Click here

    CHECK FOR DTC


    1. Recheck for DTCs (Click here).

      Table 2. Result
      Result Proceed to
      DTC B2322 is not output A
      DTC B2322 is output B

    • A

      END (FRONT POWER WINDOW REGULATOR MOTOR IS DEFECTIVE)

    • B

      REPLACE MAIN BODY ECU (COWL SIDE JUNCTION BLOCK LH)