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.

Table 1. 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
Table 2. 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
Table 3. 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
Table 4. 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
Table 5. 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

    B234587E20

  2. for Front Passenger Door

    B286840E20

  3. for Rear LH Door

    B286840E21

  4. for Rear RH Door

    B286840E22

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

Tip:

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 hereClick 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)

    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

      Table 6. 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
      Table 7. 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 hereClick 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)

    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)

    Click here

    NG

  8. INSPECT POWER WINDOW REGULATOR SWITCH ASSEMBLY

    1. B203473C21

      *a

      Component without harness connected

      (Power Window Regulator Switch Assembly)

      Remove the power window regulator switch assembly.

      Click hereClick here

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

      Table 8. 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 hereClick 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

      Table 9. 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
      Table 10. 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)

    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)

    Click here

    NG

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

    1. B203473C21

      *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 hereClick here

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

      Table 11. 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 hereClick 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.

      Table 12. 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)

    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)

    Click here

    NG

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

    1. B203473C21

      *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 hereClick here

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

      Table 13. 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 hereClick 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.

      Table 14. 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)

    Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR