POWER WINDOW CONTROL SYSTEM (for Models with Jam Protection Function on Driver Door Window Only), Diagnostic DTC:B2312

DTC Code DTC Name
B2312 Power Window Switch Malfunction

DESCRIPTION

The power window regulator motor consists of the motor, regulator and ECU. The power window regulator motor is driven by operating the power window switch.

This DTC is stored when the ECU built into the regulator motor determines that the power window switch is stuck.

Tech Tips

This DTC may be stored for all the windows.

Note


  • When the power window regulator motor is reinstalled or replaced, the power window control system must be initialized.

  • After a door glass or a door glass run has been replaced, the jam protection function may operate unexpectedly when the auto up function is used. In such cases, the auto up function can be resumed by repeating the following operation at least 5 times:


    1. Close the power window by fully pulling up the power window switch and holding it in the auto up position.

    2. Open the power window by fully pushing down the power window switch.

DTC Code DTC Detection Condition Trouble Area
B2312

  • The multiplex network master switch assembly is stuck.

  • The multiplex network master switch assembly is held in the same position for more than 20 sec.

  • Multiplex network master switch assembly

  • Power window regulator motor assembly LH (for LHD)

  • Power window regulator motor assembly RH (for RHD)

  • Harness or connector

  • Multiplex network master switch assembly held in same position for more than 20 sec.

WIRING DIAGRAM

A015773E01

INSPECTION PROCEDURE

PROCEDURE


  1. CLEAR DTC


    1. Clear the DTCs Click here.


    NEXT

  2. CHECK FOR DTC


    1. Check for DTCs Click here.

      Result
      Result Proceed to
      B2312 is output. A
      LIN communication DTCs are output. B
      No DTCs output. C

    B

    GO TO LIN COMMUNICATION SYSTEM Click here

    C

    END (DUE TO KEEPING SWITCH OPERATED FOR 20 SEC. OR MORE)

    A

  3. INSPECT MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY


    1. Remove the multiplex network master switch assembly Click here.

    2. for LHD:

      A015CAYE03
      Text in Illustration
      *1 Driver Switch *2 Front Passenger Switch
      *3 Rear RH Side Switch *4 Rear LH Side Switch
      *5 Window Lock Switch *6 Illumination

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

        Standard Resistance
        Driver Side Switch
        Tester Connection Window Lock Switch Condition Power Window Switch Condition Specified Condition

        8 (U) - 1 (E) - 4 (AUTO)

        5 (D) - 6 (B)

        		 Always (ON/OFF) UP AUTO Below 1 Ω

        8 (U) - 1(E)

        5 (D) - 6 (B)

        		 Always (ON/OFF) UP MANUAL Below 1 Ω
        8 (U) - 5 (D) - 6 (B) Always (ON/OFF) OFF Below 1 Ω

        5 (D) - 1 (E)

        8 (U) - 6 (B)

        		 Always (ON/OFF) DOWN MANUAL Below 1 Ω

        4 (AUTO) - 5(D) - 1 (E)

        8 (U) - 6 (B)

        		 Always (ON/OFF) DOWN AUTO Below 1 Ω
        Passenger Side Switch
        Tester Connection Window Lock Switch Condition Power Window Switch Condition Specified Condition

        6 (B) - 16 (U)

        1 (E) - 15 (D)

        		 OFF UP Below 1 Ω

        1 (E) - 16 (U)

        1 (E) - 15 (D)

        		 OFF OFF Below 1 Ω

        1 (E) - 16 (U)

        6 (B) - 15 (D)

        		 OFF DOWN Below 1 Ω
        6 (B) - 16 (U) ON UP Below 1 Ω
        16 (U) - 15 (D) ON OFF Below 1 Ω
        6 (B) - 15 (D) ON DOWN Below 1 Ω
        Rear RH Side Switch
        Tester Connection Window Lock Switch Condition Power Window Switch Condition Specified Condition

        6 (B) - 10 (U)

        1 (E) - 18 (D)

        		 OFF UP Below 1 Ω

        1 (E) - 18 (D)

        1 (E) - 10 (U)

        		 OFF OFF Below 1 Ω

        6 (B) - 18 (D)

        1 (E) - 10 (U)

        		 OFF DOWN Below 1 Ω
        6 (B) - 10 (U) ON UP Below 1 Ω
        18 (D) - 10 (U) ON OFF Below 1 Ω
        6 (B) - 18 (D) ON DOWN Below 1 Ω
        Rear LH Side Switch
        Tester Connection Window Lock Switch Condition Power Window Switch Condition Specified Condition

        6 (B) - 12 (U)

        1 (E) - 13 (D)

        		 OFF UP Below 1 Ω

        1 (E) - 13 (D)

        1 (E) - 12 (U)

        		 OFF OFF Below 1 Ω

        6 (B) - 13 (D)

        1 (E) - 12 (U)

        		 OFF DOWN Below 1 Ω
        6 (B) - 12 (U) ON UP Below 1 Ω
        13 (D) - 12 (U) ON OFF Below 1 Ω
        6 (B) - 13 (D) ON DOWN Below 1 Ω

        If the result is not as specified, replace the power window regulator master switch assembly.

      2. Apply battery voltage to the power window regulator master switch and check that the illumination comes on.

        OK
        Measurement Condition Specified Condition

        Battery positive (+) → Terminal 3 (LED+)

        Battery negative (-) → Terminal 1 (E)

        		 Illumination comes on

        If the result is not as specified, replace the power window regulator master switch assembly.

    3. for RHD:

      A0157T0E03
      Text in Illustration
      *1 Driver Switch *2 Front Passenger Switch
      *3 Rear RH Side Switch *4 Rear LH Side Switch
      *5 Window Lock Switch *6 Illumination

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

        Standard Resistance
        Driver Side Switch
        Tester Connection Window Lock Switch Condition Power Window Switch Condition Specified Condition

        1 (U) - 9 (E) - 4 (AUTO)

        5 (D) - 6 (B)

        		 Always (ON/OFF) UP AUTO Below 1 Ω

        1 (U) - 9 (E)

        5 (D) - 6 (B)

        		 Always (ON/OFF) UP MANUAL Below 1 Ω
        1 (U) - 5 (D) - 6 (B) Always (ON/OFF) OFF Below 1 Ω

        5 (D) - 9 (E)

        1 (U) - 6 (B)

        		 Always (ON/OFF) DOWN MANUAL Below 1 Ω

        4 (AUTO) - 5 (D) - 9 (E)

        1 (U) - 6 (B)

        		 Always (ON/OFF) DOWN AUTO Below 1 Ω
        Passenger Side Switch
        Tester Connection Window Lock Switch Condition Power Window Switch Condition Specified Condition

        6 (B) - 12 (U)

        9 (E) - 13 (D)

        		 OFF UP Below 1 Ω

        9 (E) - 12 (U)

        9 (E) - 13 (D)

        		 OFF OFF Below 1 Ω

        9 (E) - 12 (U)

        6 (B) - 13 (D)

        		 OFF DOWN Below 1 Ω
        6 (B) - 12 (U) ON UP Below 1 Ω
        12 (U) - 13 (D) ON OFF Below 1 Ω
        6 (B) - 13 (D) ON DOWN Below 1 Ω
        Rear RH Side Switch
        Tester Connection Window Lock Switch Condition Power Window Switch Condition Specified Condition

        6 (B) - 16 (U)

        9 (E) - 15 (D)

        		 OFF UP Below 1 Ω

        9 (E) - 15 (D)

        9 (E) - 16 (U)

        		 OFF OFF Below 1 Ω

        6 (B) - 15 (D)

        9 (E) - 16 (U)

        		 OFF DOWN Below 1 Ω
        6 (B) - 16 (U) ON UP Below 1 Ω
        15 (D) - 16 (U) ON OFF Below 1 Ω
        6 (B) - 15 (D) ON DOWN Below 1 Ω
        Rear LH Side Switch
        Tester Connection Window Lock Switch Condition Power Window Switch Condition Specified Condition

        6 (B) - 18 (U)

        9 (E) - 10 (D)

        		 OFF UP Below 1 Ω

        9 (E) - 10 (D)

        9 (E) - 18 (U)

        		 OFF OFF Below 1 Ω

        6 (B) - 10 (D)

        9 (E) - 18 (U)

        		 OFF DOWN Below 1 Ω
        6 (B) - 18 (U) ON UP Below 1 Ω
        10 (D) - 18 (U) ON OFF Below 1 Ω
        6 (B) - 10 (D) ON DOWN Below 1 Ω

        If the result is not as specified, replace the power window regulator master switch assembly.

      2. Apply battery voltage to the power window regulator master switch and check that the illumination comes on.

        OK
        Measurement Condition Specified Condition

        Battery positive (+) → Terminal 3 (LED+)

        Battery negative (-) → Terminal 9 (E)

        		 Illumination comes on

        If the result is not as specified, replace the power window regulator master switch assembly.


    NG

    REPLACE MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY Click here

    OK

  4. READ VALUE USING INTELLIGENT TESTER (DRIVER SIDE POWER WINDOW REGULATOR MOTOR)


    1. Use the Data List to check if the power window regulator motor is functioning properly Click here.

      D-Door Motor
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      D Door P/W Auto SW Driver side power window auto up/down signal / ON or OFF

      ON: Driver side power window auto up/down switch operated

      OFF: Driver side power window switch not operated

      		 -
      D Door P/W Up SW Driver side power window manual up signal / ON or OFF

      ON: Driver side power window manual up switch operated

      OFF: Driver side power window switch not operated

      		 -
      D Door P/W Down SW Driver side power window manual down signal / ON or OFF

      ON: Driver side power window manual down switch operated

      OFF: Driver side power window switch not operated

      		 -
      Result
      Result Proceed to
      The display does not change according to operation of the multiplex network master switch. A
      The display changes according to operation of the multiplex network master switch (for LHD). B
      The display changes according to operation of the multiplex network master switch (for RHD). C

    B

    REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY LH Click here

    C

    REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY RH Click here

    A

  5. CHECK HARNESS AND CONNECTOR (MULTIPLEX NETWORK MASTER SWITCH - FRONT POWER WINDOW REGULATOR MOTOR AND BODY GROUND)


    • *1: for LHD

    • *2: for RHD


    1. Disconnect I31*1 or I26*2 multiplex network master switch assembly connector.

    2. Disconnect I12*1 or I4*2 power window regulator motor assembly connector.

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

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      I31-8 (U) - I12-10 (UP) Always Below 1 Ω
      I31-5 (D) - I12-7 (DOWN) Always Below 1 Ω
      I31-4 (AUTO) - I12-4 (AUTO) Always Below 1 Ω
      I31-1 (E) - Body ground Always Below 1 Ω
      I31-8 (U) or I12-10 (UP) - Body ground Always 10 kΩ or higher
      I31-5 (D) or I12-7 (DOWN) - Body ground Always 10 kΩ or higher
      I31-4 (AUTO) or I12-4 (AUTO) - Body ground Always 10 kΩ or higher
      for RHD
      Tester Connection Condition Specified Condition
      I26-1 (U) - I4-10 (UP) Always Below 1 Ω
      I26-5 (D) - I4-7 (DOWN) Always Below 1 Ω
      I26-4 (AUTO) - I4-4 (AUTO) Always Below 1 Ω
      I26-9 (E) - Body ground Always Below 1 Ω
      I26-1 (U) or I4-10 (UP) - Body ground Always 10 kΩ or higher
      I26-5 (D) or I4-7 (DOWN) - Body ground Always 10 kΩ or higher
      I26-4 (AUTO) or I4-4 (AUTO) - Body ground Always 10 kΩ or higher
      Result
      Result Proceed to
      OK (for LHD) A
      OK (for RHD) B
      NG C

    B

    REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY RH Click here

    C

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    A

    REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY LH Click here