DTC B2312 Power Window Switch Malfunction: Description

The power window regulator motor assembly consists of the motor, regulator and ECU. The power window regulator motor assembly is driven by operating the power window regulator switch. This DTC is output when the ECU built into the regulator motor assembly determines that the power window switch is stuck.

HINT:

This DTC may occur for all the windows.

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 switch.

Multiplex network master switch:

DTC DETECTION CONDITION CHART

DTC Code	DTC Detection Condition	Trouble Area
B2312	Master switch stuck	Multiplex network master switch Multiplex network 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	Master switch stuck	Multiplex network master switch Front power window regulator motor LH Harness or connector Multiplex network 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	Power window regulator switch stuck	Power window regulator switch Front power window regulator motor RH Harness or connector Power window regulator switch held in same position for more than 20 seconds

Rear power window regulator motor LH:

DTC DETECTION CONDITION CHART

DTC Code	DTC Detection Condition	Trouble Area
B2312	Power window regulator switch stuck	Rear power window regulator switch LH Rear power window regulator motor LH Harness or connector Rear power window regulator switch LH held in same position for more than 20 seconds

Rear power window regulator motor RH:

DTC DETECTION CONDITION CHART

DTC Code	DTC Detection Condition	Trouble Area
B2312	Power window regulator switch stuck	Rear power window regulator switch RH Rear power window regulator motor RH Harness or connector Rear power window regulator switch RH held in same position for more than 20 seconds