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 door window regulator assemblies are operated by the power window regulator master switch assembly, power window regulator switch assembly or rear power window regulator switch assemblies. The door window regulator assemblies have motor, regulator and ECU functions.

This DTC is output when the ECU built into a door window regulator assembly and power window regulator master switch assembly determine that the power window regulator master switch assembly, power window regulator switch assembly or rear power window regulator switch assembly is stuck.

Master Switch
DTC No. Detection Item DTC Detection Condition Trouble Area
B2312 Power Window Switch Malfunction

  • Power window regulator master switch assembly stuck

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

  • Power window regulator master switch assembly operated for 20 seconds or more

 Power window regulator master switch assembly
D-Door Motor
DTC No. Detection Item DTC Detection Condition Trouble Area
B2312 Power Window Switch Malfunction

  • Power window regulator master switch assembly stuck

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

  • Power window regulator master switch assembly

  • Front door window regulator assembly (for driver door)

  • Wire harness or connector
P-Door Motor
DTC No. Detection Item DTC Detection Condition Trouble Area
B2312 Power Window Switch Malfunction

  • Power window regulator switch assembly stuck

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

  • Power window regulator switch assembly

  • Front door window regulator assembly (for passenger door)

  • Wire harness or connector
RL-Door Motor
DTC No. Detection Item DTC Detection Condition Trouble Area
B2312 Power Window Switch Malfunction

  • Rear power window regulator switch assembly (for LH door) stuck

  • Rear power window regulator switch assembly held in same position for more than 20 seconds

  • Rear power window regulator switch assembly (for LH door)

  • Rear door window regulator assembly (for LH door)

  • Wire harness or connector
RR-Door Motor
DTC No. Detection Item DTC Detection Condition Trouble Area
B2312 Power Window Switch Malfunction

  • Rear power window regulator switch assembly (for RH door) stuck

  • Rear power window regulator switch assembly held in same position for more than 20 seconds

  • Rear power window regulator switch assembly (for RH door)

  • Rear door window regulator assembly (for RH door)

  • Wire harness or connector

WIRING DIAGRAM


  1. for Driver Door

    A01LYT0E20

  2. for Front Passenger Door

    A01M18JE20

  3. for Rear LH Door

    A01M18JE21

  4. for Rear RH Door

    A01M18JE22

CAUTION / NOTICE / HINT

Note


  • DTC B2312 is stored in the power window regulator master switch assembly and in each door window regulator assembly (power window ECU).

  • If a door window regulator assembly has been replaced with a new one, initialize the power window control system.

    Click here

Tech Tips

If DTC B2312 is not output again after the DTC has been cleared, the DTC was output due to the switch being held.

PROCEDURE


  1. CHECK FOR DTC


    1. Clear the DTCs.

      Click here


      Body Electrical > Master Switch > Clear DTCs
      Body Electrical > D-Door Motor > Clear DTCs
      Body Electrical > P-Door Motor > Clear DTCs
      Body Electrical > RL-Door Motor > Clear DTCs
      Body Electrical > RR-Door Motor > Clear DTCs

    2. Check for DTCs.

      Click here


      Body Electrical > Master Switch > Trouble Codes
      Body Electrical > D-Door Motor > Trouble Codes
      Body Electrical > P-Door Motor > Trouble Codes
      Body Electrical > RL-Door Motor > Trouble Codes
      Body Electrical > RR-Door Motor > Trouble Codes
      OK
      DTC B2312 is not output.
      Result
      Proceed to
      OK
      NG

    OK

    END (DUE TO SWITCH BEING OPERATED FOR 20 SECONDS OR MORE)

    NG

  2. CHECK DTC OUTPUT


    1. Check the parts which the DTCs have been output from.

      Result
      Result Proceed to
      DTC output from power window regulator master switch assembly A
      DTC output from front door window regulator assembly (for driver door) B
      DTC output from front door window regulator assembly (for passenger door) C
      DTC output from rear door window regulator assembly (for LH door) D
      DTC output from rear door window regulator assembly (for RH door) E

    A

    REPLACE POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY Click here

    C

    READ VALUE USING GTS (P-DOOR MOTOR) Click here

    D

    READ VALUE USING GTS (RL-DOOR MOTOR) Click here

    E

    READ VALUE USING GTS (RR-DOOR MOTOR) Click here

    B

  3. READ VALUE USING GTS (D-DOOR MOTOR)


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Enter the following menus: Body Electrical / D-Door Motor / Data List.

    5. Read the Data List according to the display on the GTS.


      Body Electrical > D-Door Motor > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      D Door P/W Up SW Driver door power window manual up switch signal ON or OFF

      ON: Driver door power window manual up switch being operated

      OFF: Driver door power window manual up switch not being operated

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

      ON: Driver door power window manual down switch being operated

      OFF: Driver door power window manual down switch not being operated

      		 -

      Body Electrical > D-Door Motor > Data List
      Tester Display
      D Door P/W Up SW
      D Door P/W Down SW
      OK
      On the GTS screen, ON or OFF is displayed accordingly.
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE FRONT DOOR WINDOW REGULATOR ASSEMBLY (FOR DRIVER DOOR) for Hatchback and for Wagon: Click here
    REPLACE FRONT DOOR WINDOW REGULATOR ASSEMBLY (FOR DRIVER DOOR) for Sedan: Click here

    NG

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


    1. Disconnect the H12*1 or G3*2 power window regulator master switch assembly connector.

    2. Disconnect the H14*1 or G5*2 front door window regulator assembly (for driver door) connector.


      • *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
      H12-20 (UP) - Body ground Always 10 kΩ or higher
      H12-15 (DOWN) - Body ground Always 10 kΩ or higher
      H14-10 (UP) - Body ground Always 10 kΩ or higher
      H14-7 (DOWN) - Body ground Always 10 kΩ or higher
      for RHD
      Tester Connection Condition Specified Condition
      G3-20 (UP) - Body ground Always 10 kΩ or higher
      G3-15 (DOWN) - Body ground Always 10 kΩ or higher
      G5-10 (UP) - Body ground Always 10 kΩ or higher
      G5-7 (DOWN) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. REPLACE POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY


    1. Replace the power window regulator master switch assembly.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  6. CHECK FOR DTC


    1. Clear the DTCs.

      Click here


      Body Electrical > D-Door Motor > Clear DTCs

    2. Check for DTCs.

      Click here


      Body Electrical > D-Door Motor > Trouble Codes
      OK
      DTC B2312 is not output.
      Result
      Proceed to
      OK
      NG

    OK

    END (POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY WAS DEFECTIVE)

    NG

    REPLACE FRONT DOOR WINDOW REGULATOR ASSEMBLY (FOR DRIVER DOOR) for Hatchback and for Wagon: Click here
    REPLACE FRONT DOOR WINDOW REGULATOR ASSEMBLY (FOR DRIVER DOOR) for Sedan: Click here

  7. READ VALUE USING GTS (P-DOOR MOTOR)


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Enter the following menus: Body Electrical / P-Door Motor / Data List.

    5. Read the Data List according to the display on the GTS.


      Body Electrical > P-Door Motor > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      P Door P/W Auto SW Front passenger door power window auto switch signal ON or OFF

      ON: Front passenger door power window auto switch being operated

      OFF: Front passenger door power window auto switch not being operated

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

      ON: Front passenger door power window manual up switch being operated

      OFF: Front passenger door power window manual up switch not being operated

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

      ON: Front passenger door power window manual down switch being operated

      OFF: Front passenger door power window manual down switch not being operated

      		 -

      Body Electrical > P-Door Motor > Data List
      Tester Display
      P Door P/W Auto SW
      P Door P/W Up SW
      P Door P/W Down SW
      OK
      On the GTS screen, ON or OFF is displayed accordingly.
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE FRONT DOOR WINDOW REGULATOR ASSEMBLY (FOR PASSENGER DOOR) for Hatchback and for Wagon: Click here
    REPLACE FRONT DOOR WINDOW REGULATOR ASSEMBLY (FOR PASSENGER DOOR) for Sedan: Click here

    NG

  8. INSPECT POWER WINDOW REGULATOR SWITCH ASSEMBLY


    1. A01M1ULC21
      *a

      Component without harness connected

      (Power Window Regulator Switch Assembly)

      Remove the power window regulator switch assembly.

      Click here

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      6 (UP) - 1 (GND) Auto up or up position Below 1 Ω
      7 (DOWN) - 1 (GND) Auto down or down position Below 1 Ω
      8 (AUTO) - 1 (GND) Auto up or auto down position Below 1 Ω
      6 (UP) - 1 (GND) Off 10 kΩ or higher
      7 (DOWN) - 1 (GND) Off 10 kΩ or higher
      8 (AUTO) - 1 (GND) Off 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE POWER WINDOW REGULATOR SWITCH ASSEMBLY Click here

    OK

  9. CHECK HARNESS AND CONNECTOR (POWER WINDOW REGULATOR SWITCH ASSEMBLY - FRONT DOOR WINDOW REGULATOR ASSEMBLY (FOR PASSENGER DOOR))


    1. Disconnect the G13*1 or H4*2 front door window regulator assembly (for passenger door) connector.


      • *1: for LHD

      • *2: for RHD

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

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      G10-6 (UP) - Body ground Always 10 kΩ or higher
      G10-8 (AUTO) - Body ground Always 10 kΩ or higher
      G10-7 (DOWN) - Body ground Always 10 kΩ or higher
      G13-10 (UP) - Body ground Always 10 kΩ or higher
      G13-4 (AUTO) - Body ground Always 10 kΩ or higher
      G13-7 (DOWN) - Body ground Always 10 kΩ or higher
      for RHD
      Tester Connection Condition Specified Condition
      H3-6 (UP) - Body ground Always 10 kΩ or higher
      H3-8 (AUTO) - Body ground Always 10 kΩ or higher
      H3-7 (DOWN) - Body ground Always 10 kΩ or higher
      H4-10 (UP) - Body ground Always 10 kΩ or higher
      H4-4 (AUTO) - Body ground Always 10 kΩ or higher
      H4-7 (DOWN) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE FRONT DOOR WINDOW REGULATOR ASSEMBLY (FOR PASSENGER DOOR) for Hatchback and for Wagon: Click here
    REPLACE FRONT DOOR WINDOW REGULATOR ASSEMBLY (FOR PASSENGER DOOR) for Sedan: Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  10. READ VALUE USING GTS (RL-DOOR MOTOR)


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Enter the following menus: Body Electrical / RL-Door Motor / Data List.

    5. Read the Data List according to the display on the GTS.


      Body Electrical > RL-Door Motor > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      RL Door P/W Auto SW Rear LH door power window auto switch signal ON or OFF

      ON: Rear LH door power window auto switch being operated

      OFF: Rear LH door power window auto switch not being operated

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

      ON: Rear LH door power window manual up switch being operated

      OFF: Rear LH door power window manual up switch not being operated

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

      ON: Rear LH door power window manual down switch being operated

      OFF: Rear LH door power window manual down switch not being operated

      		 -

      Body Electrical > RL-Door Motor > Data List
      Tester Display
      RL Door P/W Auto SW
      RL Door P/W Up SW
      RL Door P/W Down SW
      OK
      On the GTS screen, ON or OFF is displayed accordingly.
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE REAR DOOR WINDOW REGULATOR ASSEMBLY (FOR LH DOOR) for Hatchback and for Wagon: Click here
    REPLACE REAR DOOR WINDOW REGULATOR ASSEMBLY (FOR LH DOOR) for Sedan: Click here

    NG

  11. INSPECT REAR POWER WINDOW REGULATOR SWITCH ASSEMBLY (FOR LH DOOR)


    1. A01M1ULC21
      *a

      Component without harness connected

      (Rear Power Window Regulator Switch Assembly (for LH Door))

      Remove the rear power window regulator switch assembly (for LH door).

      Click here

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      6 (UP) - 1 (GND) Auto up or up position Below 1 Ω
      7 (DOWN) - 1 (GND) Auto down or down position Below 1 Ω
      8 (AUTO) - 1 (GND) Auto up or auto down position Below 1 Ω
      6 (UP) - 1 (GND) Off 10 kΩ or higher
      7 (DOWN) - 1 (GND) Off 10 kΩ or higher
      8 (AUTO) - 1 (GND) Off 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE REAR POWER WINDOW REGULATOR SWITCH ASSEMBLY (FOR LH DOOR) Click here

    OK

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


    1. Disconnect the K3 rear door window regulator assembly (for LH door) connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      K1-6 (UP) - Body ground Always 10 kΩ or higher
      K1-7 (DOWN) - Body ground Always 10 kΩ or higher
      K1-8 (AUTO) - Body ground Always 10 kΩ or higher
      K3-10 (UP) - Body ground Always 10 kΩ or higher
      K3-7 (DOWN) - Body ground Always 10 kΩ or higher
      K3-4 (AUTO) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE REAR DOOR WINDOW REGULATOR ASSEMBLY (FOR LH DOOR) for Hatchback and for Wagon: Click here
    REPLACE REAR DOOR WINDOW REGULATOR ASSEMBLY (FOR LH DOOR) for Sedan: Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  13. READ VALUE USING GTS (RR-DOOR MOTOR)


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Enter the following menus: Body Electrical / RR-Door Motor / Data List.

    5. Read the Data List according to the display on the GTS.


      Body Electrical > RR-Door Motor > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      RR Door P/W Auto SW Rear RH door power window auto switch signal ON or OFF

      ON: Rear RH door power window auto switch being operated

      OFF: Rear RH door power window auto switch not being operated

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

      ON: Rear RH door power window manual up switch being operated

      OFF: Rear RH door power window manual up switch not being operated

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

      ON: Rear RH door power window manual down switch being operated

      OFF: Rear RH door power window manual down switch not being operated

      		 -

      Body Electrical > RR-Door Motor > Data List
      Tester Display
      RR Door P/W Auto SW
      RR Door P/W Up SW
      RR Door P/W Down SW
      OK
      On the GTS screen, ON or OFF is displayed accordingly.
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE REAR DOOR WINDOW REGULATOR ASSEMBLY (FOR RH DOOR) for Hatchback and for Wagon: Click here
    REPLACE REAR DOOR WINDOW REGULATOR ASSEMBLY (FOR RH DOOR) for Sedan: Click here

    NG

  14. INSPECT REAR POWER WINDOW REGULATOR SWITCH ASSEMBLY (FOR RH DOOR)


    1. A01M1ULC21
      *a

      Component without harness connected

      (Rear Power Window Regulator Switch Assembly (for RH Door))

      Remove the rear power window regulator switch assembly (for RH door).

      Click here

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      6 (UP) - 1 (GND) Auto up or up position Below 1 Ω
      7 (DOWN) - 1 (GND) Auto down or down position Below 1 Ω
      8 (AUTO) - 1 (GND) Auto up or auto down position Below 1 Ω
      6 (UP) - 1 (GND) Off 10 kΩ or higher
      7 (DOWN) - 1 (GND) Off 10 kΩ or higher
      8 (AUTO) - 1 (GND) Off 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE REAR POWER WINDOW REGULATOR SWITCH ASSEMBLY (FOR RH DOOR) Click here

    OK

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


    1. Disconnect the J3 rear door window regulator assembly (for RH door) connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      J1-6 (UP) - Body ground Always 10 kΩ or higher
      J1-7 (DOWN) - Body ground Always 10 kΩ or higher
      J1-8 (AUTO) - Body ground Always 10 kΩ or higher
      J3-10 (UP) - Body ground Always 10 kΩ or higher
      J3-7 (DOWN) - Body ground Always 10 kΩ or higher
      J3-4 (AUTO) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE REAR DOOR WINDOW REGULATOR ASSEMBLY (FOR RH DOOR) for Hatchback and for Wagon: Click here
    REPLACE REAR DOOR WINDOW REGULATOR ASSEMBLY (FOR RH DOOR) for Sedan: Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR