| DTC Code | DTC Name |
|---|---|
| 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 determines that the power window switch is stuck.
Tech Tips
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:
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 Code | DTC Detection Condition | Trouble Area |
|---|---|---|
| B2312 |
|
|
| DTC Code | DTC Detection Condition | Trouble Area |
|---|---|---|
| B2312 |
|
|
| DTC Code | DTC Detection Condition | Trouble Area |
|---|---|---|
| B2312 |
|
|
| DTC Code | DTC Detection Condition | Trouble Area |
|---|---|---|
| B2312 |
|
|
| DTC Code | DTC Detection Condition | Trouble Area |
|---|---|---|
| B2312 |
|
|
WIRING DIAGRAM
PROCEDURE
CHECK CAN COMMUNICATION SYSTEM
Check for CAN communication system DTCs related to the power window control system.
| Result | Proceed to |
|---|---|
| DTC is not output | A |
| DTC is output (for LHD) | B |
| DTC is output (for RHD) | C |
| B |
|
GO TO CAN COMMUNICATION SYSTEM (for LHD) Click here |
| C |
|
GO TO CAN COMMUNICATION SYSTEM (for RHD) Click here |
| A |
|
CHECK LIN COMMUNICATION SYSTEM
Check for LIN communication system DTCs related to the power window control system.
| Result | Proceed to |
|---|---|
| DTC is not output | A |
| DTC is output | B |
| B |
|
GO TO LIN COMMUNICATION SYSTEM Click here |
| A |
|
CHECK FOR DTC
Check where DTC B2312 is output from.
| Result | Proceed to |
|---|---|
| B2312 output from Master switch | A |
| B2312 output from driver side motor | B |
| B2312 output from front passenger side motor | C |
| B2312 output from rear motor LH | D |
| B2312 output from rear motor RH | E |
| B |
|
READ VALUE USING INTELLIGENT TESTER (DRIVER SIDE MOTOR) Click here |
| C |
|
READ VALUE USING INTELLIGENT TESTER (FRONT PASSENGER SIDE MOTOR) Click here |
| D |
|
READ VALUE USING INTELLIGENT TESTER (REAR MOTOR LH) Click here |
| E |
|
READ VALUE USING INTELLIGENT TESTER (REAR MOTOR RH) Click here |
| A |
|
READ VALUE USING INTELLIGENT TESTER (MASTER SWITCH)
Use the Data List to check if the master switch is functioning properly.
| Tester Display | Measurement Item/Range | Normal Condition | Diagnostic Note |
|---|---|---|---|
| D Door P/W Auto SW | Driver side power window auto UP/DOWN switch signal / ON or OFF | ON: Driver side power window auto UP/DOWN switch on master switch operated OFF: Driver side power window switch on master switch not operated |
- |
| P Door P/W Auto SW | Front passenger side power window remote auto UP/DOWN switch signal / ON or OFF | ON: Front passenger side power window remote auto UP/DOWN switch on master switch operated OFF: Front passenger side power window switch on master switch not operated |
- |
| RR Door P/W Auto SW | Rear power window RH remote auto UP/DOWN switch signal / ON or OFF | ON: Rear power window RH remote auto UP/DOWN switch on master switch operated OFF: Rear power window RH switch on master switch not operated |
- |
| RL Door P/W Auto SW | Rear power window LH remote auto UP/DOWN switch signal / ON or OFF | ON: Rear power window LH remote auto UP/DOWN switch on master switch operated OFF: Rear power window LH switch on master switch not operated |
- |
| P Door P/W Up SW | Front passenger side power window remote manual UP switch signal / ON or OFF | ON: Front passenger side power window remote manual UP switch on master switch operated OFF: Front passenger side power window switch on master switch not operated |
- |
| RR Door P/W Up Switch | Rear power window RH remote manual UP switch signal / ON or OFF | ON: Rear power window RH remote manual UP switch on master switch operated OFF: Rear power window RH switch on master switch not operated |
- |
| RL Door P/W Up Switch | Rear power window LH remote manual UP switch signal / ON or OFF | ON: Rear power window LH remote manual UP switch on master switch operated OFF: Rear power window LH switch on master switch not operated |
- |
| P Door P/W Down SW | Front passenger side power window remote manual DOWN switch signal / ON or OFF | ON: Front passenger side power window remote manual DOWN switch on master switch operated OFF: Front passenger side power window switch on master switch not operated |
- |
| RR Door P/W Down SW | Rear power window RH remote manual DOWN switch signal / ON or OFF | ON: Rear power window RH remote manual DOWN switch on master switch operated OFF: Rear power window RH switch on master switch not operated |
- |
| RL Door P/W Down SW | Rear power window LH remote manual DOWN switch signal / ON or OFF | ON: Rear power window LH remote manual DOWN switch on master switch operated OFF: Rear power window LH switch on master switch not operated |
- |
| Window Lock Switch Status | Power window LOCK switch / ON or OFF | ON: Power window lock switch LOCK position OFF: Power window lock switch UNLOCK position |
- |
| OK |
|---|
| Tester display changes normally when master switch is operated. |
| OK |
|
END (DUE TO KEEPING SWITCH OPERATED FOR 20 SECONDS OR MORE) |
| NG |
|
REPLACE MASTER SWITCH ASSEMBLY Click here |
READ VALUE USING INTELLIGENT TESTER (DRIVER SIDE MOTOR)
Use the Data List to check if the master switch is functioning properly.
| Tester Display | Measurement Item/Range | Normal Condition | Diagnostic Note |
|---|---|---|---|
| D Door P/W Auto SW | Driver side power window auto UP/DOWN switch signal / ON or OFF | ON: Driver side power window auto UP/DOWN switch on master switch operated OFF: Driver side power window switch on master switch not operated |
- |
| D Door P/W Up SW | Driver side power window MANUAL UP switch signal / ON or OFF | ON: Driver side power window manual UP switch on master switch operated OFF: Driver side power window switch on master switch not operated |
- |
| D Door P/W Down SW | Driver side power window MANUAL DOWN switch signal / ON or OFF | ON: Driver side power window manual DOWN switch on master switch operated OFF: Driver side power window switch on master switch not operated |
- |
| OK |
|---|
| Tester display changes normally when master switch is operated. |
| OK |
|
END (DUE TO KEEPING SWITCH OPERATED FOR 20 SECONDS OR MORE) |
| NG |
|
CHECK HARNESS AND CONNECTOR (MASTER SWITCH - DRIVER SIDE DOOR ECU)
Disconnect the N13 switch connector.
Disconnect the P10*1 or P4*2 ECU connector.
Measure the resistance according to the value(s) in the table below.
| Standard resistance | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||
|
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
| OK |
|
CHECK HARNESS AND CONNECTOR (DRIVER SIDE DOOR ECU - DRIVER SIDE MOTOR)
Disconnect the N10*1 or N1*2 ECU connector.
Disconnect the N11*1 or N3*2 motor connector.
Measure the resistance according to the value(s) in the table below.
| Standard resistance | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||
|
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
| OK |
|
CHECK HARNESS AND CONNECTOR (MASTER SWITCH - DRIVER SIDE MOTOR)
Disconnect the N13 switch connector.
Disconnect the N11*1 or N3*2 motor connector.
Measure the resistance according to the value(s) in the table below.
| Standard resistance | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||
|
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
| OK |
|
CHECK MASTER SWITCH ASSEMBLY (OPERATION)
Temporarily replace the master switch with a new or normally functioning one Click here.
Check that the power window function operates normally.
| OK |
|---|
| Power window operates normally. |
| Result | Proceed to |
|---|---|
| OK | A |
| NG (for LHD) | B |
| NG (for RHD) | C |
| A |
|
REPLACE MASTER SWITCH ASSEMBLY Click here |
| B |
|
REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY LH Click here |
| C |
|
REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY RH Click here |
READ VALUE USING INTELLIGENT TESTER (FRONT PASSENGER SIDE MOTOR)
Use the Data List to check if the master switch is functioning properly.
| Tester Display | Measurement Item/Range | Normal Condition | Diagnostic Note |
|---|---|---|---|
| P Door P/W Auto SW | Front passenger side power window auto UP/DOWN switch signal / ON or OFF | ON: Front passenger side power window auto UP/DOWN switch operated OFF: Front passenger side power window switch not operated |
- |
| P Door P/W Up SW | Front passenger side power window manual UP switch signal / ON or OFF | ON: Front passenger side power window manual UP switch operated OFF: Front passenger side power window switch not operated |
- |
| P Door P/W Down SW | Front passenger side power window manual DOWN switch signal / ON or OFF | ON: Front passenger side power window manual DOWN switch operated OFF: Front passenger side power window switch not operated |
- |
| OK |
|---|
| Tester display changes normally when front passenger side power window switch is operated. |
| OK |
|
END (DUE TO KEEPING SWITCH OPERATED FOR 20 SECONDS OR MORE) |
| NG |
|
INSPECT POWER WINDOW REGULATOR SWITCH ASSEMBLY (for Front Passenger Side)
Remove the switch Click here.
Measure the resistance according to the value(s) in the table below.
| Standard resistance | |||||||||
|---|---|---|---|---|---|---|---|---|---|
|
|||||||||
|
| NG |
|
REPLACE POWER WINDOW REGULATOR SWITCH ASSEMBLY (for Front Passenger) Click here |
| OK |
|
CHECK HARNESS AND CONNECTOR (FRONT PASSENGER SIDE DOOR ECU - FRONT PASSENGER SIDE SWITCH)
Disconnect the P4*1 or P10*2 ECU connector.
Disconnect the N6*1 or N17*2 switch connector.
Measure the resistance according to the value(s) in the table below.
| Standard resistance | |||||||||
|---|---|---|---|---|---|---|---|---|---|
|
|||||||||
|
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
| OK |
|
CHECK HARNESS AND CONNECTOR (FRONT PASSENGER SIDE DOOR ECU - FRONT PASSENGER SIDE MOTOR)
Disconnect the N1*1 or N10*2 ECU connector.
Disconnect the N3*1 or N11*2 motor connector.
Measure the resistance according to the value(s) in the table below.
| Standard resistance | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||
|
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
| OK |
|
CHECK HARNESS AND CONNECTOR (FRONT PASSENGER SIDE SWITCH - FRONT PASSENGER SIDE MOTOR)
Disconnect the N6*1 or N17*2 switch connector.
Disconnect the N3*1 or N11*2 motor connector.
Measure the resistance according to the value(s) in the table below.
| Standard resistance | |||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||||||
|
| Result | Proceed to |
|---|---|
| NG | A |
| OK (for LHD) | B |
| OK (for RHD) | C |
| A |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
| B |
|
REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY RH Click here |
| C |
|
REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY LH Click here |
READ VALUE USING INTELLIGENT TESTER (REAR MOTOR LH)
Use the Data List to check if the master switch is functioning properly.
| Tester Display | Measurement Item/Range | Normal Condition | Diagnostic Note |
|---|---|---|---|
| RL Door P/W Auto SW | Rear power window LH auto UP/DOWN switch signal / ON or OFF | ON: Rear power window LH auto UP/DOWN switch operated OFF: Rear power window LH switch not operated |
- |
| RL Door P/W Up SW | Rear power window LH manual UP switch signal / ON or OFF | ON: Rear power window LH manual UP switch operated OFF: Rear power window LH switch not operated |
- |
| RL Door P/W Down SW | Rear power window LH manual DOWN switch signal / ON or OFF | ON: Rear power window LH manual DOWN switch operated OFF: Rear power window LH switch not operated |
- |
| OK |
|---|
| Tester display changes normally when rear power window switch LH is operated. |
| OK |
|
END (DUE TO KEEPING SWITCH OPERATED FOR 20 SECONDS OR MORE) |
| NG |
|
INSPECT REAR POWER WINDOW REGULATOR SWITCH ASSEMBLY LH
| *1 | Component without harness connected: (Power Window Regulator Switch) |
| *2 | UP |
| *3 | DOWN |
Remove the switch Click here.
Measure the resistance according to the value(s) in the table below.
| Standard resistance | |||||||||
|---|---|---|---|---|---|---|---|---|---|
|
| NG |
|
REPLACE REAR POWER WINDOW REGULATOR SWITCH ASSEMBLY LH Click here |
| OK |
|
CHECK HARNESS AND CONNECTOR (REAR DOOR ECU LH - REAR SWITCH LH)
Disconnect the O15 ECU connector.
| *1 | Front view of wire harness connector: (to Rear Door ECU LH) |
| *2 | Front view of wire harness connector: (to Rear Switch LH) |
Disconnect the O18 switch connector.
Measure the resistance according to the value(s) in the table below.
| Standard resistance | |||||||||
|---|---|---|---|---|---|---|---|---|---|
|
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
| OK |
|
CHECK HARNESS AND CONNECTOR (REAR DOOR ECU LH - REAR MOTOR LH)
Disconnect the O14 ECU connector.
| *1 | Front view of wire harness connector: (to Rear Door ECU LH) |
| *2 | Front view of wire harness connector: (to Rear Motor LH) |
| *3 | PWE |
| *4 | BDRJ |
Disconnect the O19 motor connector.
Measure the resistance according to the value(s) in the table below.
| Standard resistance | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
| OK |
|
CHECK HARNESS AND CONNECTOR (REAR SWITCH LH - REAR MOTOR LH)
Disconnect the O18 switch connector.
| *1 | Front view of wire harness connector: (to Rear Switch LH) |
| *2 | Front view of wire harness connector: (to Rear Motor LH) |
| *3 | UP |
| *4 | DOWN |
Disconnect the O19 motor connector.
Measure the resistance according to the value(s) in the table below.
| Standard resistance | |||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
| OK |
|
REPLACE REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY LH Click here |
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
READ VALUE USING INTELLIGENT TESTER (REAR MOTOR RH)
Use the Data List to check if the master switch is functioning properly.
| Tester Display | Measurement Item/Range | Normal Condition | Diagnostic Note |
|---|---|---|---|
| RR Door P/W Auto SW | Rear power window RH auto UP/DOWN switch signal / ON or OFF | ON: Rear power window RH auto UP/DOWN switch operated OFF: Rear power window RH switch not operated |
- |
| RR Door P/W Up SW | Rear power window RH manual UP switch signal / ON or OFF | ON: Rear power window RH manual UP switch operated OFF: Rear power window RH switch not operated |
- |
| RR Door P/W Down SW | Rear power window RH manual DOWN switch signal / ON or OFF | ON: Rear power window RH manual DOWN switch operated OFF: Rear power window RH switch not operated |
- |
| OK |
|---|
| Tester display changes normally when rear power window switch RH is operated. |
| OK |
|
END (DUE TO KEEPING SWITCH OPERATED FOR 20 SECONDS OR MORE) |
| NG |
|
INSPECT REAR POWER WINDOW REGULATOR SWITCH ASSEMBLY RH
| *1 | Component without harness connected: (Power Window Regulator Switch) |
| *2 | UP |
| *3 | DOWN |
Remove the switch Click here.
Measure the resistance according to the value(s) in the table below.
| Standard resistance | |||||||||
|---|---|---|---|---|---|---|---|---|---|
|
| NG |
|
REPLACE REAR POWER WINDOW REGULATOR SWITCH ASSEMBLY RH Click here |
| OK |
|
CHECK HARNESS AND CONNECTOR (REAR DOOR ECU RH - REAR SWITCH RH)
Disconnect the O2 ECU connector.
| *1 | Front view of wire harness connector: (to Rear Door ECU RH) |
| *2 | Front view of wire harness connector: (to Rear Switch RH) |
Disconnect the O7 switch connector.
Measure the resistance according to the value(s) in the table below.
| Standard resistance | |||||||||
|---|---|---|---|---|---|---|---|---|---|
|
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
| OK |
|
CHECK HARNESS AND CONNECTOR (REAR DOOR ECU RH - REAR MOTOR RH)
Disconnect the O3 ECU connector.
| *1 | Front view of wire harness connector: (to Rear Door ECU RH) |
| *2 | Front view of wire harness connector: (to Rear Motor RH) |
| *3 | PWE |
| *4 | BDRJ |
Disconnect the O8 motor connector.
Measure the resistance according to the value(s) in the table below.
| Standard resistance | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
| OK |
|
CHECK HARNESS AND CONNECTOR (REAR SWITCH RH - REAR MOTOR RH)
Disconnect the O7 switch connector.
| *1 | Front view of wire harness connector: (to Rear Switch RH) |
| *2 | Front view of wire harness connector: (to Rear Motor RH) |
| *3 | UP |
| *4 | DOWN |
Disconnect the O8 motor connector.
Measure the resistance according to the value(s) in the table below.
| Standard resistance | |||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
| OK |
|
REPLACE REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY RH Click here |
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |