POWER WINDOW CONTROL SYSTEM, Diagnostic DTC:B2312

DTC Code DTC Name
B2312 Driver Side Door Master 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.

DTC No. DTC Detection Condition Trouble Area
B2312

  • The power window regulator master switch assembly is stuck.

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

  • Power window regulator master switch assembly

  • Power window regulator motor assembly LH or RH (driver side)

  • Harness or connector

WIRING DIAGRAM

A01VF2AE07
A01VF2AE08

CAUTION / NOTICE / HINT

Note


  • The power window control system uses a LIN communication system. Inspect the communication function by following How to Proceed with Troubleshooting Click here. Troubleshoot the power window control system after confirming that the communication system is functioning properly.

  • When the power window regulator motor assembly LH or RH (driver side) 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 operations at least 5 times:


    1. Close the power window by fully pulling up the power window regulator master switch assembly and holding it in the auto up position.

    2. Open the power window by fully pushing down the power window regulator master switch assembly.

PROCEDURE


  1. READ VALUE USING INTELLIGENT TESTER


    1. Connect the intelligent tester to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the intelligent tester on.

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

    5. According to the display on the intelligent 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 switch signal /

      ON or OFF

      ON: Driver side door power window auto switch operated

      OFF: Driver side door power window auto switch not operated

      		 -
      D Door P/W Up SW

      Driver side power window manual up switch signal / ON or OFF

      ON or OFF

      ON: Driver side door power window manual up switch operated

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

      		 -
      D Door P/W Down SW

      Driver side power window manual down switch signal /

      ON or OFF

      ON: Driver side door power window manual down switch operated

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

      		 -
      OK
      Normal conditions listed above are displayed.

    OK

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

    NG

  2. INSPECT POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY


    1. Inspect the power window regulator master switch assembly Click here.


    NG

    REPLACE POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY Click here

    OK

  3. CHECK HARNESS AND CONNECTOR (POWER WINDOW MASTER SWITCH - POWER WINDOW REGULATOR MOTOR LH OR RH AND BODY GROUND)


    1. for LHD


      1. Disconnect the H1 power window regulator master switch assembly connector.

      2. Disconnect the H3 power window regulator motor assembly LH (driver side) connector.

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

        Standard Resistance
        w/ Rear Power Window
        Tester Connection Condition Specified Condition
        H1-8 (UP) - H3-10 (UP) Always Below 1 Ω
        H1-5 (DOWN) - H3-7 (DOWN) Always Below 1 Ω
        H1-4 (AUTO) - H3-4 (AUTO) Always Below 1 Ω
        H1-1 (GND) - Body ground Always Below 1 Ω
        H1-8 (UP) - Body ground Always 10 kΩ or higher
        H1-5 (DOWN) - Body ground Always 10 kΩ or higher
        H1-4 (AUTO) - Body ground Always 10 kΩ or higher
        w/o Rear Power Window
        Tester Connection Condition Specified Condition
        H1-18 (UP) - H3-10 (UP) Always Below 1 Ω
        H1-10 (DOWN) - H3-7 (DOWN) Always Below 1 Ω
        H1-1 (AUTO) - H3-4 (AUTO) Always Below 1 Ω
        H1-7 (GND) - Body ground Always Below 1 Ω
        H1-18 (UP) - Body ground Always 10 kΩ or higher
        H1-10 (DOWN) - Body ground Always 10 kΩ or higher
        H1-1 (AUTO) - Body ground Always 10 kΩ or higher

    2. for RHD


      1. Disconnect the G1 power window regulator master switch assembly connector.

      2. Disconnect the G3 power window regulator motor assembly RH (driver side) connector.

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

        Standard Resistance
        w/ Rear Power Window
        Tester Connection Condition Specified Condition
        G1-1 (UP) - G3-10 (UP) Always Below 1 Ω
        G1-5 (DOWN) - G3-7 (DOWN) Always Below 1 Ω
        G1-4 (AUTO) - G3-4 (AUTO) Always Below 1 Ω
        G1-9 (GND) - Body ground Always Below 1 Ω
        G1-1 (UP) - Body ground Always 10 kΩ or higher
        G1-5 (DOWN) - Body ground Always 10 kΩ or higher
        G1-4 (AUTO) - Body ground Always 10 kΩ or higher
        w/o Rear Power Window
        Tester Connection Condition Specified Condition
        G1-9 (UP) - G3-10 (UP) Always Below 1 Ω
        G1-6 (DOWN) - G3-7 (DOWN) Always Below 1 Ω
        G1-18 (AUTO) - G3-4 (AUTO) Always Below 1 Ω
        G1-7 (GND) - Body ground Always Below 1 Ω
        G1-9 (UP) - Body ground Always 10 kΩ or higher
        G1-6 (DOWN) - Body ground Always 10 kΩ or higher
        G1-18 (AUTO) - Body ground Always 10 kΩ or higher

    OK

    REPLACE POWER WINDOW REGULATOR MOTOR ASSEMBLY LH OR RH (DRIVER SIDE) Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR