POWER WINDOW CONTROL SYSTEM, 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 sec.

  • Multiplex network master switch

  • Harness or connector
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 sec.

  • Multiplex network master switch

  • Power window regulator motor

  • Harness or connector
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 sec.

  • Power window regulator switch

  • Power window regulator motor

  • Harness or connector
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 sec.

  • Power window regulator switch

  • Power window regulator motor

  • Harness or connector
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 sec.

  • Power window regulator switch

  • Power window regulator motor

  • Harness or connector

WIRING DIAGRAM

A01ER4BE03
A01ENA2E14
A01ENA2E15
A01ENA2E16

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. 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

    B

    READ VALUE USING INTELLIGENT TESTER (DRIVER SIDE POWER WINDOW REGULATOR MOTOR) 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 LH) Click here

    E

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

    A

    REPLACE MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY Click here

  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
      Display does not change according to operation of multiplex network master switch. A
      Display changes according to operation of multiplex network master switch (for LHD). B
      Display changes according to operation of 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)


    1. A01EOBYE03

      Disconnect I11*1 or I22*2 switch connector.

    2. Disconnect I12*1 or I4*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
      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

    B

    REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY LH Click here

    C

    REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY RH Click here

    A

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  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
      Display does not change according to operation of power window regulator switch. A
      Display changes according to operation of power window regulator switch (for LHD). B
      Display changes according to operation of 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. A01ENN3E04

      Remove the 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
      2 (UP) - 5 (GND) Manual up operation Below 1 Ω
      10 (DOWN) - 5 (GND) Manual down operation Below 1 Ω
      4 (AUTO) - 5 (GND) Auto up/down operation Below 1 Ω

    NG

    REPLACE POWER WINDOW REGULATOR SWITCH ASSEMBLY Click here

    OK

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


    1. A01ERZLE07

      Disconnect the I3*1 or I28*2 switch connector.

    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
      I3-2 (UP) - I4-10 (UP) Always Below 1 Ω
      I3-10 (DOWN) - I4-7 (DOWN) Always Below 1 Ω
      I3-4 (AUTO) - I4-4 (AUTO) Always Below 1 Ω
      I3-2 (UP) or I4-10 (UP) - Body ground Always 10 kΩ or higher
      I3-10 (DOWN) or I4-7 (DOWN) - Body ground Always 10 kΩ or higher
      I3-4 (AUTO) or I4-4 (AUTO) - Body ground Always 10 kΩ or higher
      for RHD
      Tester Connection Condition Specified Condition
      I28-2 (UP) - I12-10 (UP) Always Below 1 Ω
      I28-10 (DOWN) - I12-7 (DOWN) Always Below 1 Ω
      I28-4 (AUTO) - I12-4 (AUTO) Always Below 1 Ω
      I28-2 (UP) or I12-10 (UP) - Body ground Always 10 kΩ or higher
      I28-10 (DOWN) or I12-7 (DOWN) - Body ground Always 10 kΩ or higher
      I28-4 (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

    B

    REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY RH Click here

    C

    REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY LH Click here

    A

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  9. READ VALUE USING INTELLIGENT TESTER (REAR POWER WINDOW REGULATOR MOTOR 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
      Display changes according to operation of rear power window regulator switch LH.

    NG

    INSPECT REAR POWER WINDOW REGULATOR SWITCH ASSEMBLY LH Click here

    OK

    REPLACE REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY LH Click here

  10. INSPECT REAR POWER WINDOW REGULATOR SWITCH ASSEMBLY LH

    A01ENN3E02

    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
      2 (UP) - 5 (GND) Manual up operation Below 1 Ω
      10 (DOWN) - 5 (GND) Manual down operation Below 1 Ω
      4 (AUTO) - 5 (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 LH - POWER WINDOW REGULATOR MOTOR LH)


    1. A01ERZLE09

      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
      J10-2 (UP) - J11-10 (UP) Always Below 1 Ω
      J10-10 (DOWN) - J11-7 (DOWN) Always Below 1 Ω
      J10-4 (AUTO) - J11-4 (AUTO) Always Below 1 Ω
      J10-2 (UP) or J11-10 (UP) - Body ground Always 10 kΩ or higher
      J10-10 (DOWN) or J11-7 (DOWN) - Body ground Always 10 kΩ or higher
      J10-4 (AUTO) or J11-4 (AUTO) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY LH Click here

  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
      Display changes according to operation of rear power window regulator switch RH.

    NG

    INSPECT REAR POWER WINDOW REGULATOR SWITCH ASSEMBLY RH Click here

    OK

    REPLACE REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY RH Click here

  13. INSPECT REAR POWER WINDOW REGULATOR SWITCH ASSEMBLY RH

    A01ENN3E03

    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
      2 (UP) - 5 (GND) Manual up operation Below 1 Ω
      10 (DOWN) - 5 (GND) Manual down operation Below 1 Ω
      4 (AUTO) - 5 (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 RH - POWER WINDOW REGULATOR MOTOR RH)

    A01ERZLE10

    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
      J3-2 (UP) - J4-10 (UP) Always Below 1 Ω
      J3-10 (DOWN) - J4-7 (DOWN) Always Below 1 Ω
      J3-4 (AUTO) - J4-4 (AUTO) Always Below 1 Ω
      J3-2 (UP) or J4-10 (UP) - Body ground Always 10 kΩ or higher
      J3-10 (DOWN) or J4-7 (DOWN) - Body ground Always 10 kΩ or higher
      J3-4 (AUTO) or J4-4 (AUTO) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY RH Click here