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 output when the ECU built into the regulator motor determines that the power window switch is stuck.

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:

    (a) Close the power window by fully pulling up the power window switch and holding it in the AUTO UP position.

    (b) Open the power window by fully pushing down the power window switch.

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

  • The power window regulator master switch is stuck.

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

  • Power window regulator master switch

  • Harness or connector
Front Power Window Regulator Motor (Driver Side)
DTC No. DTC Detection Condition Trouble Area
B2312

  • The power window regulator master switch stuck.

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

  • Power window regulator master switch

  • Power window regulator motor

  • Harness or connector
Front Power Window Regulator Motor (Passenger Side)
DTC No. DTC Detection Condition Trouble Area
B2312

  • The power window regulator switch is stuck.

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

  • Power window regulator switch

  • Power window regulator motor

  • Harness or connector

WIRING DIAGRAM

A0119WFE01

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK LIN COMMUNICATION SYSTEM


    1. Check for LIN communication system DTCs related to the power window control system Click here.

      OK
      LIN communication system DTCs are not output.

    NG

    GO TO LIN COMMUNICATION SYSTEM Click here

    OK

  2. CHECK FOR DTC


    1. Check where DTC B2312 is output from.

      Result
      Result Proceed to
      B2312 output from power window regulator master switch A
      B2312 output from front power window regulator motor (driver side) B
      B2312 output from front power window regulator motor (passenger side) C

    B

    READ VALUE USING INTELLIGENT TESTER (D-DOOR MOTOR) Click here

    C

    READ VALUE USING INTELLIGENT TESTER (P-DOOR MOTOR) Click here

    A

  3. READ VALUE USING INTELLIGENT TESTER (MASTER SWITCH)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the tester on.

    4. Enter the following menus: Body / Master Switch / Data List /

    5. According to the display on the tester, read the Data List.

      Master Switch
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      D Door P/W Auto SW Driver side power window auto UP/DOWN switch signal / ON or OFF

      ON: Driver side power window auto UP/DOWN switch on power window regulator master switch operated

      OFF: Driver side power window switch on power window regulator master switch not operated

      		 -
      P Door P/W Auto SW Front passenger side power window remote auto UP/DOWN switch signal / ON or OFF

      ON: Front passenger side power window remote auto UP/DOWN switch on power window regulator master switch operated

      OFF: Front passenger side power window switch on power window regulator master switch not operated

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

      ON: Front passenger side power window remote manual UP switch on power window regulator master switch operated

      OFF: Front passenger side power window switch on power window regulator master switch not operated

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

      ON: Front passenger side power window remote manual DOWN switch on power window regulator master switch operated

      OFF: Front passenger side power window switch on the power window regulator master switch not operated

      		 -
      Window Lock Switch Status Power window LOCK switch / ON or OFF

      ON: Power window lock switch LOCK position

      OFF: Power window lock switch UNLOCK position

      		 -
      OK
      The tester display changes normally when master switch is operated.

    NG

    REPLACE POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY Click here

    OK

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

  4. READ VALUE USING INTELLIGENT TESTER (D-DOOR MOTOR)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the tester on.

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

    5. According to the display on the tester, read the Data List.

      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 switch 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 switch 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 switch signal / ON or OFF

      ON: Driver side power window manual DOWN switch operated

      OFF: Driver side power window switch not operated

      		 -
      OK
      The tester display changes normally when master switch is operated.

    NG

    CHECK HARNESS AND CONNECTOR (POWER WINDOW MASTER SWITCH - POWER WINDOW REGULATOR MOTOR) Click here

    OK

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

  5. CHECK HARNESS AND CONNECTOR (POWER WINDOW MASTER SWITCH - POWER WINDOW REGULATOR MOTOR)


    1. A0117KRE03
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Power Window Regulator Master Switch Assembly)
      *2

      Front view of wire harness connector

      (to Front Power Window Regulator Motor Assembly)
      *3 for LHD
      *4 for RHD

      Disconnect the F1 or E1 power window regulator master switch connector.

    2. Disconnect the F4 or E4 power window regulator motor assembly connector.

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

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      F1-20 (UP) - F4-10 (UP) Always Below 1 Ω
      F1-20 (UP) or F4-10 (UP) -Body ground Always 10 kΩ or higher
      F1-15 (DOWN) - F4-7 (DOWN) Always Below 1 Ω
      F1-15 (DOWN) or F4-7 (DOWN) - Body ground Always 10 kΩ or higher
      for RHD
      Tester Connection Condition Specified Condition
      E1-20 (UP) - E4-10 (UP) Always Below 1 Ω
      E1-20 (UP) or E4-10 (UP) -Body ground Always 10 kΩ or higher
      E1-15 (DOWN) - E4-7 (DOWN) Always Below 1 Ω
      E1-15 (DOWN) or E4-7 (DOWN) - Body ground Always 10 kΩ or higher

    4. Reconnect the power window regulator motor assembly connector.

    5. Reconnect the power window regulator master switch assembly connector.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE FRONT DOOR WINDOW REGULATOR SUB-ASSEMBLY (DRIVER SIDE) Click here

  6. READ VALUE USING INTELLIGENT TESTER (P-DOOR MOTOR)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the tester on.

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

    5. According to the display on the tester, read the Data List.

      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 switch 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 switch 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 switch signal / ON or OFF

      ON: Front passenger side power window manual DOWN switch operated

      OFF: Front passenger side power window regulator switch not operated

      		 -
      OK
      The tester display changes normally when master switch is operated.

    NG

    INSPECT POWER WINDOW REGULATOR SWITCH ASSEMBLY Click here

    OK

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

  7. INSPECT POWER WINDOW REGULATOR SWITCH ASSEMBLY


    1. A0118UGE01
      Text in Illustration
      *1

      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 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

    3. Reinstall the power window regulator switch assembly.


    NG

    REPLACE POWER WINDOW REGULATOR SWITCH ASSEMBLY Click here

    OK

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


    1. A01177GE03
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Power Window Regulator Switch Assembly)
      *2

      Front view of wire harness connector

      (to Front Power Window Regulator Motor Assembly)
      *3 for LHD
      *4 for RHD

      Disconnect the E2 or F2 power window regulator switch assembly connector.

    2. Disconnect the E4 or F4 power window regulator motor assembly connector.

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

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      E2-6 (UP) - E4-10 (UP) Always Below 1 Ω
      E2-6 (UP) or E4-10 (UP) - Body ground Always 10 kΩ or higher
      E2-7 (DOWN) - E4-7 (DOWN) Always Below 1 Ω
      E2-7 (DOWN) or E4-7 (DOWN) - Body ground Always 10 kΩ or higher
      E2-8 (AUTO) - E4-4 (AUTO) Always Below 1 Ω
      E2-8 (AUTO) or E4-4 (AUTO) - Body ground Always 10 kΩ or higher
      for RHD
      Tester Connection Condition Specified Condition
      F2-6 (UP) - F4-10 (UP) Always Below 1 Ω
      F2-6 (UP) or F4-10 (UP) - Body ground Always 10 kΩ or higher
      F2-7 (DOWN) - F4-7 (DOWN) Always Below 1 Ω
      F2-7 (DOWN) or F4-7 (DOWN) - Body ground Always 10 kΩ or higher
      F2-8 (AUTO) - F4-4 (AUTO) Always Below 1 Ω
      F2-8 (AUTO) or F4-4 (AUTO) - Body ground Always 10 kΩ or higher

    4. Reconnect the power window regulator motor assembly connector.

    5. Reconnect the power window regulator switch assembly connector.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE FRONT DOOR WINDOW REGULATOR SUB-ASSEMBLY (PASSENGER SIDE) Click here