POWER WINDOW CONTROL SYSTEM(for Models with Jam Protection Function on 4 Windows), 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.

Multiplex Network Master Switch
DTC Code DTC Detection Condition Trouble Area
B2312

  • The multiplex network master switch is stuck.

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

  • Multiplex network master switch

  • Harness or connector

  • Multiplex network master switch held in same position for more than 20 seconds
Front Power Window Regulator Motor LH
DTC Code DTC Detection Condition Trouble Area
B2312

  • The multiplex network master switch is stuck.

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

  • Multiplex network master switch

  • Power window regulator motor

  • Harness or connector

  • Multiplex network master switch held in same position for more than 20 seconds
Front Power Window Regulator Motor RH
DTC Code DTC Detection Condition Trouble Area
B2312

  • The power window regulator switch is stuck.

  • The power window regulator switch is held in same position for more than 20 seconds.

  • Power window regulator switch

  • Power window regulator motor

  • Harness or connector

  • Power window regulator switch held in same position for more than 20 seconds
Rear Power Window Regulator Motor LH
DTC Code DTC Detection Condition Trouble Area
B2312

  • The power window regulator switch is stuck.

  • The power window regulator switch is held in same position for more than 20 seconds.

  • Power window regulator switch

  • Power window regulator motor

  • Harness or connector

  • Power window regulator switch held in same position for more than 20 seconds
Rear Power Window Regulator Motor RH
DTC Code DTC Detection Condition Trouble Area
B2312

  • The power window regulator switch is stuck.

  • The power window regulator switch is held in same position for more than 20 seconds.

  • Power window regulator switch

  • Power window regulator motor

  • Harness or connector

  • Power window regulator switch held in same position for more than 20 seconds

WIRING DIAGRAM

A01XA7YE01
A01XBF8E01
A01X5NOE02
A01X5NOE03

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 SECONDS OR MORE)

    A

  3. CHECK MALFUNCTION LOCATION


    1. Check where DTC B2312 is output from.

      Result
      Result Proceed to
      B2312 output from multiplex network master switch. A
      B2312 output from driver side power window regulator motor. B
      B2312 output from passenger side power window regulator motor. C
      B2312 output from rear power window regulator motor LH. D
      B2312 output from rear power window regulator motor RH. E

    A

    REPLACE MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY Click here

    C

    READ VALUE USING INTELLIGENT TESTER (FRONT PASSENGER SIDE POWER WINDOW REGULATOR MOTOR) Click here

    D

    READ VALUE USING INTELLIGENT TESTER (REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY LH) Click here

    E

    READ VALUE USING INTELLIGENT TESTER (REAR POWER WINDOW REGULATOR MOTOR RH) Click here

    B

  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. A01WZTCE02

      Disconnect I11*1 or I22*2 switch connector.

      Tech Tips


      • *1: for LHD

      • *2: for RHD

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

      Tech Tips


      • *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
      I11-20 (UP) - I12-10 (UP) Always Below 1 Ω
      I11-15 (DOWN) - I12-7 (DOWN) Always Below 1 Ω
      I11-20 (UP) or I12-10 (UP) - Body ground Always 10 kΩ or higher
      I11-15 (DOWN) or I12-7 (DOWN) - Body ground Always 10 kΩ or higher
      for RHD
      Tester Connection Condition Specified Condition
      I22-20 (UP) - I4-10 (UP) Always Below 1 Ω
      I22-15 (DOWN) - I4-7 (DOWN) Always Below 1 Ω
      I22-20 (UP) or I4-10 (UP) - Body ground Always 10 kΩ or higher
      I22-15 (DOWN) or I4-7 (DOWN) - Body ground Always 10 kΩ or higher
      Result
      Result Proceed to
      NG A
      OK (for LHD) B
      OK (for RHD) C

    A

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    B

    REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY LH Click here

    C

    REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY RH Click here

  6. READ VALUE USING INTELLIGENT TESTER (FRONT PASSENGER SIDE POWER WINDOW REGULATOR MOTOR)


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

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

      ON: Front passenger side power window auto up/down switch operated

      OFF: Front passenger side power window regulator switch not operated

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

      ON: Front passenger side power window manual up switch operated

      OFF: Front passenger side power window regulator switch not operated

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

      ON: Front passenger side power window manual down switch operated

      OFF: Front passenger side power window regulator switch not operated

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

    B

    REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY RH Click here

    C

    REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY LH Click here

    A

  7. INSPECT POWER WINDOW REGULATOR SWITCH ASSEMBLY


    1. A01X1G2E01

      Remove the power window regulator switch Click here.

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

      Standard Resistance
      for LHD
      Tester Connection Switch Condition Specified Condition
      I3-6 (UP) - I3-1 (GND) Manual up operation Below 1 Ω
      I3-7 (DOWN) - I3-1 (GND) Manual down operation Below 1 Ω
      I3-8 (AUTO) - I3-1 (GND) Auto up/down operation Below 1 Ω
      for RHD
      Tester Connection Switch Condition Specified Condition
      I25-6 (UP) - I25-1 (GND) Manual up operation Below 1 Ω
      I25-7 (DOWN) - I25-1 (GND) Manual down operation Below 1 Ω
      I25-8 (AUTO) - I25-1 (GND) Auto up/down operation Below 1 Ω

    NG

    REPLACE FRONT PASSENGER SIDE POWER WINDOW REGULATOR SWITCH ASSEMBLY Click here

    OK

  8. CHECK HARNESS AND CONNECTOR (POWER WINDOW REGULATOR SWITCH ASSEMBLY - FRONT POWER WINDOW REGULATOR MOTOR)


    1. A01X3FPE02

      Disconnect the I3*1 or I25*2 switch connector.

      Tech Tips


      • *1: for LHD

      • *2: for RHD

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

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

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      I3-6 (UP) - I4-10 (UP) Always Below 1 Ω
      I3-7 (DOWN) - I4-7 (DOWN) Always Below 1 Ω
      I3-8 (AUTO) - I4-4 (AUTO) Always Below 1 Ω
      I3-6 (UP) or I4-10 (UP) - Body ground Always 10 kΩ or higher
      I3-7 (DOWN) or I4-7 (DOWN) - Body ground Always 10 kΩ or higher
      I3-8 (AUTO) or I4-4 (AUTO) - Body ground Always 10 kΩ or higher
      for RHD
      Tester Connection Condition Specified Condition
      I25-6 (UP) - I12-10 (UP) Always Below 1 Ω
      I25-7 (DOWN) - I12-7 (DOWN) Always Below 1 Ω
      I25-8 (AUTO) - I12-4 (AUTO) Always Below 1 Ω
      I25-6 (UP) or I12-10 (UP) - Body ground Always 10 kΩ or higher
      I25-7 (DOWN) or I12-7 (DOWN) - Body ground Always 10 kΩ or higher
      I25-8 (AUTO) or I12-4 (AUTO) - Body ground Always 10 kΩ or higher
      Result
      Result Proceed to
      NG A
      OK (for LHD) B
      OK (for RHD) C

    A

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    B

    REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY RH Click here

    C

    REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY LH Click here

  9. READ VALUE USING INTELLIGENT TESTER (REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY LH)


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

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

      ON: Rear power window LH auto up/down switch operated

      OFF: Rear power window LH switch not operated

      		 -
      RL Door P/W Up SW Rear power window LH manual up signal / ON or OFF

      ON: Rear power window LH manual up switch operated

      OFF: Rear power window LH switch not operated

      		 -
      RL Door P/W Down SW Rear power window LH manual down signal / ON or OFF

      ON: Rear power window LH manual down switch operated

      OFF: The rear power window LH switch not operated

      		 -
      OK
      The display changes according to operation of the rear power window regulator switch.

    OK

    REPLACE REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY LH Click here

    NG

  10. INSPECT REAR POWER WINDOW REGULATOR SWITCH ASSEMBLY LH

    A01X6EGE02
    *1 Component without harness connected: (Rear Power Window Regulator Switch LH)
    *2 DOWN
    *3 UP

    1. Remove the rear power window regulator switch Click here.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      J10-6 (UP) - J10-1 (GND) Manual up operation Below 1 Ω
      J10-7 (DOWN) - J10-1 (GND) Manual down operation Below 1 Ω
      J10-8 (AUTO) - J10-1 (GND) Auto up/down operation Below 1 Ω

    NG

    REPLACE REAR POWER WINDOW REGULATOR SWITCH ASSEMBLY LH Click here

    OK

  11. CHECK HARNESS AND CONNECTOR (REAR POWER WINDOW REGULATOR SWITCH ASSEMBLY LH - POWER WINDOW REGULATOR MOTOR)


    1. A01X5SLE02
      *1 Front view of wire harness connector: (to Rear Power Window Regulator Switch)
      *2 DOWN
      *3 UP
      *4 Front view of wire harness connector: (to Power Window Regulator Motor)

      Disconnect the J10 switch connector.

    2. Disconnect the J11 motor connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      J10-6 (UP) - J11-10 (UP) Always Below 1 Ω
      J10-7 (DOWN) - J11-7 (DOWN) Always Below 1 Ω
      J10-8 (AUTO) - J11-4 (AUTO) Always Below 1 Ω
      J10-6 (UP) or J11-10 (UP) - Body ground Always 10 kΩ or higher
      J10-7 (DOWN) or J11-7 (DOWN) - Body ground Always 10 kΩ or higher
      J10-8 (AUTO) or J11-4 (AUTO) - Body ground Always 10 kΩ or higher

    OK

    REPLACE REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY LH Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  12. READ VALUE USING INTELLIGENT TESTER (REAR POWER WINDOW REGULATOR MOTOR RH)


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

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

      ON: The rear power window RH auto up/down switch operated

      OFF: The rear power window RH switch not operated

      		 -
      RR Door P/W Up SW Rear power window RH manual up signal / ON or OFF

      ON: The rear power window RH manual up switch operated

      OFF: The rear power window RH switch not operated

      		 -
      RR Door P/W Down SW Rear power window RH manual down signal / ON or OFF

      ON: The rear power window RH manual down switch operated

      OFF: The rear power window RH switch not operated

      		 -
      OK
      The display changes according to operation of the rear power window regulator switch RH.

    OK

    REPLACE REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY RH Click here

    NG

  13. INSPECT REAR POWER WINDOW REGULATOR SWITCH ASSEMBLY RH

    A01X6EGE03
    *1 Component without harness connected: (Rear Power Window Regulator Switch RH)
    *2 DOWN
    *3 UP

    1. Remove the rear power window regulator switch Click here.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      J3-6 (UP) - J3-1 (GND) Manual up operation Below 1 Ω
      J3-7 (DOWN) - J3-1 (GND) Manual down operation Below 1 Ω
      J3-8 (AUTO) - J3-1 (GND) Auto up/down operation Below 1 Ω

    NG

    REPLACE REAR POWER WINDOW REGULATOR SWITCH ASSEMBLY RH Click here

    OK

  14. CHECK HARNESS AND CONNECTOR (REAR POWER WINDOW REGULATOR SWITCH ASSEMBLY RH - BODY GROUND)

    A01X39UE02
    *1 Front view of wire harness connector: (to Power Window Regulator Switch)
    *2 DOWN
    *3 UP
    *4 Front view of wire harness connector: (to Power Window Regulator Motor)

    1. Disconnect the J3 switch connector.

    2. Disconnect the J4 motor connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      J3-6 (UP) - J4-10 (UP) Always Below 1 Ω
      J3-7 (DOWN) - J4-7 (DOWN) Always Below 1 Ω
      J3-8 (AUTO) - J4-4 (AUTO) Always Below 1 Ω
      J3-6 (UP) or J4-10 (UP) - Body ground Always 10 kΩ or higher
      J3-7 (DOWN) or J4-7 (DOWN) - Body ground Always 10 kΩ or higher
      J3-8 (AUTO) or J4-4 (AUTO) - Body ground Always 10 kΩ or higher

    OK

    REPLACE REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY RH Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR