DTC B2311 Driver Door Motor Malfunction: Description

The driver door power window regulator motor is driven by operating the power window regulator master switch. The driver door power window regulator motor has motor, regulator, and ECU functions.

DTC B2311 is output when the driver door power window regulator motor assembly has a malfunction, or the ECU built into the regulator motor assembly determines that the fully closed window position has deviated approximately 20 mm (0.79 in.) or more from the normal position.

NOTE:

The power window control system uses a multiplex communication system (LIN). 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.
When the power window regulator motor assembly (on the 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 operation at least 5 times:

Close the power window by fully pulling up the power window switch and holding it in the AUTO UP position.
Open the power window by fully pushing down the switch.

DTC TROUBLE DETECTION CONDITION CHART

DTC No.	DTC Detection Condition	Trouble Area
B2311	When either condition below is met: Power window regulator motor (on driver side) malfunctions When ECU in power widow regulator motor (on driver side) determines that fully closed window position has deviated approximately 20 mm (0.79 in.) or more from normal position	Battery disconnection when ignition switch ON Power window regulator motor (on driver side) Incorrect installation of power window components Overheated power window regulator motor (on driver side)