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

Power Window Regulator Master Switch

DTC DETECTION CONDITION CHART

DTC Code	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 Power window regulator master switch held in same position for more than 20 seconds.

Front Power Window Regulator Motor LH

DTC DETECTION CONDITION CHART

DTC Code	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 Power window regulator master switch held in same position for more than 20 seconds.

Front Power Window Regulator Motor RH

DTC DETECTION CONDITION CHART

DTC Code	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 Power window regulator switch held in same position for more than 20 seconds.