POWER WINDOW CONTROL SYSTEM, Diagnostic DTC:B2312

DTC Code DTC Name
B2312 Power Window Switch Malfunction

DESCRIPTION

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

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

Tip:

This DTC may be stored for all the windows.

Note:

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

  • After any 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.

Table 1. Power Window Regulator Master Switch

DTC Code

DTC Detection Condition

Trouble Area

B2312

Either condition is met:

  • The power window regulator master switch is stuck.

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

  • Power window regulator master switch
Table 2. Front Door Window Regulator (for Driver Side)

DTC Code

DTC Detection Condition

Trouble Area

B2312

Either condition is met:

  • The power window regulator master switch is stuck.

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

  • Front door window regulator

  • Harness or connector
Table 3. Front Door Window Regulator (for Front Passenger Side)

DTC Code

DTC Detection Condition

Trouble Area

B2312

Either condition is met:

  • The power window regulator switch is stuck.

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

  • Power window regulator switch

  • Front door window regulator

  • Harness or connector
Table 4. Rear Door Window Regulator LH (w/ Rear Door Power Window)

DTC Code

DTC Detection Condition

Trouble Area

B2312

Either condition is met:

  • The rear power window regulator switch LH is stuck.

  • The rear power window regulator switch LH is held in the same position for more than 20 sec.

  • Rear power window regulator switch LH

  • Rear door window regulator LH

  • Harness or connector
Table 5. Rear Door Window Regulator RH (w/ Rear Door Power Window)

DTC Code

DTC Detection Condition

Trouble Area

B2312

Either condition is met:

  • The rear power window regulator switch RH is stuck.

  • The rear power window regulator switch RH is held in the same position for more than 20 sec.

  • Rear power window regulator switch RH

  • Rear door window regulator RH

  • Harness or connector

WIRING DIAGRAM

B222156E03
B456299E01
B180279E21
B180279E22

PROCEDURE

  1. CLEAR DTC

    1. Clear the DTCs (Click here).

  2. CHECK FOR DTC

    1. Check for DTCs (Click here).

      Table 6. Result

      Result

      Proceed to

      No DTCs output.

      A

      LIN communication DTCs are output.

      B

      DTC B2312 is output.

      C

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

    GO TO LIN COMMUNICATION SYSTEM

    (Click here)

  3. CHECK MALFUNCTION LOCATION

    1. Check where DTC B2312 is output from (Click here).

      Table 7. Result

      Result

      Proceed to

      DTC B2312 output from power window regulator master switch.

      A

      DTC B2312 output from driver side door window regulator.

      B

      DTC B2312 output from front passenger side door window regulator.

      C

      DTC B2312 output from rear door window regulator LH*.

      D

      DTC B2312 output from rear door window regulator RH*.

      E

    • *: w/ Rear Door Power Window

    REPLACE POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY

    (Click here)

    READ VALUE USING INTELLIGENT TESTER (FRONT PASSENGER SIDE DOOR WINDOW REGULATOR ASSEMBLY)Click here

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

    READ VALUE USING INTELLIGENT TESTER (REAR DOOR WINDOW REGULATOR ASSEMBLY RH)Click here

  4. READ VALUE USING INTELLIGENT TESTER (DRIVER SIDE DOOR WINDOW REGULATOR ASSEMBLY)

    1. Use the Data List to check if the door window regulator is functioning properly (Click here).

      Table 8. 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

      -
      Table 9. Result

      Result

      Proceed to

      Display does not change according to operation of power window regulator master switch.

      A

      Display changes according to operation of power window regulator master switch (for LHD).

      B

      Display changes according to operation of power window regulator master switch (for RHD).

      C

    REPLACE FRONT DOOR WINDOW REGULATOR ASSEMBLY LH

    (Click here)

    REPLACE FRONT DOOR WINDOW REGULATOR ASSEMBLY RH

    (Click here)

  5. CHECK HARNESS AND CONNECTOR (POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY - FRONT DOOR WINDOW REGULATOR ASSEMBLY)

    • *1: for LHD

    • *2: for RHD

    1. B215962E08

      Disconnect the K5*1 or J5*2 switch connector.

    2. Disconnect the K8*1 or J6*2 regulator connector.

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

      Standard Resistance

      Table 10. for LHD

      Tester Connection

      Condition

      Specified Condition

      K5-20 (UP) - K8-10 (UP)

      Always

      Below 1 Ω

      K5-15 (DOWN) - K8-7 (DOWN)

      Always

      Below 1 Ω

      K5-20 (UP) or K8-10 (UP) - Body ground

      Always

      10 kΩ or higher

      K5-15 (DOWN) or K8-7 (DOWN) - Body ground

      Always

      10 kΩ or higher
      Table 11. for RHD

      Tester Connection

      Condition

      Specified Condition

      J5-20 (UP) - J6-10 (UP)

      Always

      Below 1 Ω

      J5-15 (DOWN) - J6-7 (DOWN)

      Always

      Below 1 Ω

      J5-20 (UP) or J6-10 (UP) - Body ground

      Always

      10 kΩ or higher

      J5-15 (DOWN) or J6-7 (DOWN) - Body ground

      Always

      10 kΩ or higher
      Table 12. Text in Illustration

      *1

      for LHD

      *2

      for RHD

      *3

      Front view of wire harness connector

      (to Power Window Regulator Master Switch)

      *4

      Front view of wire harness connector

      (to Front Door Window Regulator)
      Table 13. Result

      Result

      Proceed to

      OK (for LHD)

      A

      OK (for RHD)

      B

      NG

      C

    REPLACE FRONT DOOR WINDOW REGULATOR ASSEMBLY LH

    (Click here)

    REPLACE FRONT DOOR WINDOW REGULATOR ASSEMBLY RH

    (Click here)

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  6. READ VALUE USING INTELLIGENT TESTER (FRONT PASSENGER SIDE DOOR WINDOW REGULATOR ASSEMBLY)

    1. Use the Data List to check if the front door window regulator is functioning properly (Click here).

      Table 14. 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

      -
      Table 15. 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

    REPLACE FRONT DOOR WINDOW REGULATOR ASSEMBLY LH

    (Click here)

    REPLACE FRONT DOOR WINDOW REGULATOR ASSEMBLY RH

    (Click here)

  7. INSPECT POWER WINDOW REGULATOR SWITCH ASSEMBLY

    1. B215963E21

      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

      6 (UP) - 1 (GND)

      Manual up operation

      Below 1 Ω

      7 (DOWN) - 1 (GND)

      Manual down operation

      Below 1 Ω

      8 (AUTO) - 1 (GND)

      Auto up/down operation

      Below 1 Ω

      6 (UP) - 1 (GND)

      Not operated

      10 kΩ or higher

      7 (DOWN) - 1 (GND)

      Not operated

      10 kΩ or higher

      8 (AUTO) - 1 (GND)

      Not operated

      10 kΩ or higher

    REPLACE POWER WINDOW REGULATOR SWITCH ASSEMBLY

    (Click here)

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

    • *1: for LHD

    • *2: for RHD

    1. B215964E11

      Disconnect the J4*1 or K4*2 switch connector.

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

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

      Standard Resistance

      Table 16. for LHD

      Tester Connection

      Condition

      Specified Condition

      J4-6 (UP) - J8-10 (UP)

      Always

      Below 1 Ω

      J4-7 (DOWN) - J8-7 (DOWN)

      Always

      Below 1 Ω

      J4-8 (AUTO) - J8-4 (AUTO)

      Always

      Below 1 Ω

      J4-6 (UP) or J8-10 (UP) - Body ground

      Always

      10 kΩ or higher

      J4-7 (DOWN) or J8-7 (DOWN) - Body ground

      Always

      10 kΩ or higher

      J4-8 (AUTO) or J8-4 (AUTO) - Body ground

      Always

      10 kΩ or higher
      Table 17. for RHD

      Tester Connection

      Condition

      Specified Condition

      K4-6 (UP) - K10-10 (UP)

      Always

      Below 1 Ω

      K4-7 (DOWN) - K10-7 (DOWN)

      Always

      Below 1 Ω

      K4-8 (AUTO) - K10-4 (AUTO)

      Always

      Below 1 Ω

      K4-6 (UP) or K10-10 (UP) - Body ground

      Always

      10 kΩ or higher

      K4-7 (DOWN) or K10-7 (DOWN) - Body ground

      Always

      10 kΩ or higher

      K4-8 (AUTO) or K10-4 (AUTO) - Body ground

      Always

      10 kΩ or higher
      Table 18. Text in Illustration

      *1

      for LHD

      *2

      for RHD

      *3

      Front view of wire harness connector

      (to Power Window Regulator Switch)

      *4

      Front view of wire harness connector

      (to Front Door Window Regulator)
      Table 19. Result

      Result

      Proceed to

      OK (for LHD)

      A

      OK (for RHD)

      B

      NG

      C

    REPLACE FRONT DOOR WINDOW REGULATOR ASSEMBLY RH

    (Click here)

    REPLACE FRONT DOOR WINDOW REGULATOR ASSEMBLY LH

    (Click here)

    REPAIR OR REPLACE HARNESS OR CONNECTOR

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

    1. Use the Data List to check if the rear door window regulator is functioning properly (Click here).

      Table 20. 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: Rear power window LH switch not operated

      -

      OK

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

    REPLACE REAR DOOR WINDOW REGULATOR ASSEMBLY LH

    (Click here)

  10. INSPECT REAR POWER WINDOW REGULATOR SWITCH ASSEMBLY LH

    1. B215963E21

      Remove the rear power window regulator switch LH (Click here).

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

      Standard Resistance

      Tester Connection

      Switch Condition

      Specified Condition

      6 (UP) - 1 (GND)

      Manual up operation

      Below 1 Ω

      7 (DOWN) - 1 (GND)

      Manual down operation

      Below 1 Ω

      8 (AUTO) - 1 (GND)

      Auto up/down operation

      Below 1 Ω

      6 (UP) - 1 (GND)

      Not operated

      10 kΩ or higher

      7 (DOWN) - 1 (GND)

      Not operated

      10 kΩ or higher

      8 (AUTO) - 1 (GND)

      Not operated

      10 kΩ or higher

    REPLACE REAR POWER WINDOW REGULATOR SWITCH ASSEMBLY LH

    (Click here)

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

    1. B215965E19

      Disconnect the M1 switch connector.

    2. Disconnect the M3 regulator connector.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      M1-6 (UP) - M3-10 (UP)

      Always

      Below 1 Ω

      M1-7 (DOWN) - M3-7 (DOWN)

      Always

      Below 1 Ω

      M1-8 (AUTO) - M3-4 (AUTO)

      Always

      Below 1 Ω

      M1-6 (UP) or M3-10 (UP) - Body ground

      Always

      10 kΩ or higher

      M1-7 (DOWN) or M3-7 (DOWN) - Body ground

      Always

      10 kΩ or higher

      M1-8 (AUTO) or M3-4 (AUTO) - Body ground

      Always

      10 kΩ or higher
      Table 21. Text in Illustration

      *1

      Front view of wire harness connector

      (to Rear Power Window Regulator Switch LH)

      *2

      Front view of wire harness connector

      (to Rear Door Window Regulator LH)

    REPLACE REAR DOOR WINDOW REGULATOR ASSEMBLY LH

    (Click here)

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  12. READ VALUE USING INTELLIGENT TESTER (REAR DOOR WINDOW REGULATOR ASSEMBLY RH)

    1. Use the Data List to check if the rear door window regulator is functioning properly (Click here).

      Table 22. 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: Rear power window RH auto up/down switch operated

      OFF: Rear power window RH switch not operated

      -

      RR Door P/W Up SW

      Rear power window RH manual up signal / ON or OFF

      ON: Rear power window RH manual up switch operated

      OFF: Rear power window RH switch not operated

      -

      RR Door P/W Down SW

      Rear power window RH manual down signal / ON or OFF

      ON: Rear power window RH manual down switch operated

      OFF: Rear power window RH switch not operated

      -

      OK

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

    REPLACE REAR DOOR WINDOW REGULATOR ASSEMBLY RH

    (Click here)

  13. INSPECT REAR POWER WINDOW REGULATOR SWITCH ASSEMBLY RH

    1. B215963E21

      Remove the rear power window regulator switch RH (Click here).

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

      Standard Resistance

      Tester Connection

      Switch Condition

      Specified Condition

      6 (UP) - 1 (GND)

      Manual up operation

      Below 1 Ω

      7 (DOWN) - 1 (GND)

      Manual down operation

      Below 1 Ω

      8 (AUTO) - 1 (GND)

      Auto up/down operation

      Below 1 Ω

      6 (UP) - 1 (GND)

      Not operated

      10 kΩ or higher

      7 (DOWN) - 1 (GND)

      Not operated

      10 kΩ or higher

      8 (AUTO) - 1 (GND)

      Not operated

      10 kΩ or higher

    REPLACE REAR POWER WINDOW REGULATOR SWITCH ASSEMBLY RH

    (Click here)

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

    1. B215965E08

      Disconnect the L1 switch connector.

    2. Disconnect the L3 regulator connector.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      L1-6 (UP) - L3-10 (UP)

      Always

      Below 1 Ω

      L1-7 (DOWN) - L3-7 (DOWN)

      Always

      Below 1 Ω

      L1-8 (AUTO) - L3-4 (AUTO)

      Always

      Below 1 Ω

      L1-6 (UP) or L3-10 (UP) - Body ground

      Always

      10 kΩ or higher

      L1-7 (DOWN) or L3-7 (DOWN) - Body ground

      Always

      10 kΩ or higher

      L1-8 (AUTO) or L3-4 (AUTO) - Body ground

      Always

      10 kΩ or higher
      Table 23. Text in Illustration

      *1

      Front view of wire harness connector

      (to Rear Power Window Regulator Switch RH)

      *2

      Front view of wire harness connector

      (to Rear Door Window Regulator RH)

    REPLACE REAR DOOR WINDOW REGULATOR ASSEMBLY RH

    (Click here)

    REPAIR OR REPLACE HARNESS OR CONNECTOR