POWER WINDOW CONTROL SYSTEM, Diagnostic DTC:B2312

DTC Code DTC Name
B2312 Power Window Switch Malfunction

DESCRIPTION

The power window regulator motor assembly LH (for driver door) is operated by the power window regulator master switch assembly. The power window regulator motor assembly LH (for driver door) has motor, regulator and ECU functions.

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

DTC No. DTC Detection Condition Trouble Area
B2312
  • Power window regulator master switch assembly (for driver door) stuck

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

  • Power window regulator master switch assembly

  • Power window regulator motor assembly LH (for driver door)

  • Wire harness or connector

WIRING DIAGRAM

A011TXDE09

INSPECTION PROCEDURE

Note

  • DTC B2312 is stored in the power window regulator motor assembly LH (for driver door) (power window ECU).

  • If a power window regulator motor assembly LH (for driver door) has been replaced with a new one, initialize the power window control system Click here.

  • Inspect the fuses for circuits related to this system before performing the following inspection procedure.

PROCEDURE

  1. CHECK DTC OUTPUT

    1. Clear the DTC Click here.

    2. Check for DTCs Click here.

      OK
      DTC B2312 is not output.
    NG
    OK
  2. READ VALUE USING TECHSTREAM (DRIVER DOOR WINDOW MOTOR)

    1. Connect the Techstream to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the Techstream on.

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

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

      D-Door Motor
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      D Door P/W Auto SW Driver door power window auto switch signal / ON or OFF

      ON: Driver door power window auto switch operated

      OFF: Driver door power window auto switch not operated

      -
      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 operated

      OFF: Driver door power window manual up switch not 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 operated

      OFF: Driver door power window manual down switch not operated

      -
      OK
      On the Techstream screen, ON or OFF is displayed accordingly.
    NG
    OK
  3. CHECK HARNESS AND CONNECTOR (POWER WINDOW REGULATOR MASTER SWITCH - POWER WINDOW REGULATOR MOTOR LH (FOR DRIVER DOOR))

    1. Disconnect the K11 power window regulator master switch assembly connector.

    2. Disconnect the K9 power window regulator motor assembly LH (for driver door) connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      K11-8 (U) - Body ground Always 10 kΩ or higher
      K11-5 (D) - Body ground Always 10 kΩ or higher
      K11-4 (A) - Body ground Always 10 kΩ or higher
      K9-10 (UP1) - Body ground Always 10 kΩ or higher
      K9-7 (DWN1) - Body ground Always 10 kΩ or higher
      K9-4 (AUTO) - Body ground Always 10 kΩ or higher
    NG
    OK
  4. INSPECT POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY

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

      A011SGEE71
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      8 (U) - 1 (E) Released 10 kΩ or higher
      8 (U) - 4 (A) Released 10 kΩ or higher
      4 (A) - 1 (E) Released 10 kΩ or higher
      5 (D) - 1 (E) Released 10 kΩ or higher
      4 (A) - 5 (D) Released 10 kΩ or higher
      Text in Illustration
      *a

      Component without harness connected

      (Power Window Regulator Master Switch Assembly)

    NG
    OK