POWER WINDOW CONTROL SYSTEM, Diagnostic DTC:B2311

DTC Code DTC Name
B2311 Driver Door Motor Malfunction

DESCRIPTION

The portion of the power window control system that is located in the driver door consists of a power window master switch, regulator, and a motor with an integrated ECU. The driver door power window regulator motor is controlled by the ECU when the power window master switch is operated (models with jam protection).

DTC B2311 is set when the ECU for the driver door power window regulator motor assembly malfunctions.

Note

The power window control system uses a serial communication protocol (LIN) to communicate with the main body ECU. Inspect the communication function by following HOW TO PROCEED WITH TROUBLESHOOTING. Troubleshoot the power window control system after confirming that the communication system is functioning properly.

Tech Tips


  • Initialization is required only when the power window regulator motor is replaced. However, replacing the motor may cause the motor gear to be engaged in a different position. This can cause a difference to exist between the current door glass position and the position memorized in the ECU. In this case, the jam protection function may work improperly. Return the system to the pre-initialized condition and reinitialize the system.

  • To return the system to the pre-initialized condition Click here

DTC Code DTC Detection Condition Trouble Area
B2311

When either condition below is met:


  • The power window regulator motor (on driver side) malfunctions

  • The ECU in the power widow regulator motor (on driver side) determines that the fully closed window position has deviated approximately 20 mm (0.79 in.) or more from the normal position

  • Battery disconnection when the ignition switch is on (IG)

  • Power window regulator motor (on driver side)

  • Incorrect installation of power window components

  • Overheated power window regulator motor (on driver side)

INSPECTION PROCEDURE

PROCEDURE


  1. INITIALIZE POWER WINDOW CONTROL SYSTEM


    1. Initialize the power window regulator motor assembly (on the driver side) Click here.

    2. Check that the power window operates normally by opening and closing the window.

      OK
      Driver side power window operates normally.

    NG

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

    OK

  2. CHECK WHETHER PARTS HAVE BEEN INSTALLED CORRECTLY


    1. Check that the power window components (on the driver side) are installed correctly.

      OK
      Power window components (on driver side) are installed correctly.

      Tech Tips

      When the power window components are installed correctly, the problem has been caused by battery disconnection while the ignition switch is on (IG), improper installation of the power window components or the motor being overheated.


    NG

    INSTALL PARTS CORRECTLY

    OK

  3. CHECK DTC OUTPUT


    1. Turn the ignition switch off.

    2. Wait for at least 10 seconds, and then turn the ignition switch on (IG).

    3. Check whether the DTC output recurs.

      Result
      Result Proceed to
      B2311 is output A
      B2311 is not output B

    A

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

    B

    END