DTC    B2312    Power Window Switch Malfunction

for Preparation Click here


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.

NOTICE:
  1. When the power window regulator motor is reinstalled or replaced, the power window control system must be initialized.
  2. 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:
    (a) Close the power window by fully pulling up the power window switch and holding it in the AUTO UP position.
    (b) Open the power window by fully pushing down the power window switch.


Power Window Regulator Master Switch 
DTC No.
DTC Detection Condition
Trouble Area
B2312
  1. The power window regulator master switch is stuck.
  2. The power window regulator master switch is held in the same position for more than 20 seconds.
  1. Power window regulator master switch
  2. Harness or connector

Front Power Window Regulator Motor (Driver Side) 
DTC No.
DTC Detection Condition
Trouble Area
B2312
  1. The power window regulator master switch stuck.
  2. The Power window regulator master switch is held in the same position for more than 20 seconds.
  1. Power window regulator master switch
  2. Power window regulator motor
  3. Harness or connector

Front Power Window Regulator Motor (Passenger Side) 
DTC No.
DTC Detection Condition
Trouble Area
B2312
  1. The power window regulator switch is stuck.
  2. Power window regulator switch is held in the same position for more than 20 seconds.
  1. Power window regulator switch
  2. Power window regulator motor
  3. Harness or connector

WIRING DIAGRAM


B215942E01


INSPECTION PROCEDURE

1.CHECK LIN COMMUNICATION SYSTEM

  1. Check for LIN communication system DTCs related to the power window control system (Click here).

    OK:
    LIN communication system DTCs are not output.



NG
GO TO LIN COMMUNICATION SYSTEM (Click here)
OK


2.CHECK FOR DTC

  1. Check where DTC B2312 is output from.
    Result 
    Result
    		Proceed to
    B2312 output from power window regulator master switch
    		A
    B2312 output from front power window regulator motor (driver side)
    		B
    B2312 output from front power window regulator motor (passenger side)
    		C



B
Go to step 4

C
Go to step 6
A


3.READ VALUE USING INTELLIGENT TESTER (MASTER SWITCH)

  1. Connect the intelligent tester to the DLC3.

  1. Turn the ignition switch to ON.

  1. Turn the tester on.

  1. Enter the following menus: Body / Master Switch / Data List /

  1. According to the display on the tester, read the Data List.

    Master Switch 
    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 power window regulator master switch operated
    OFF: Driver side power window switch on power window regulator 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 power window regulator master switch operated
    OFF: Front passenger side power window switch on power window regulator 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 power window regulator master switch operated
    OFF: Front passenger side power window switch on power window regulator 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 power window regulator master switch operated
    OFF: Front passenger side power window switch on the power window regulator 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:
    The tester display changes normally when master switch is operated.



NG
REPLACE POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY (Click here)
OK

END (DUE TO KEEPING SWITCH OPERATED FOR 20 SECONDS OR MORE) 

4.READ VALUE USING INTELLIGENT TESTER (D-DOOR MOTOR)

  1. Connect the intelligent tester to the DLC3.

  1. Turn the ignition switch to ON.

  1. Turn the tester on.

  1. Enter the following menus: Body / D-Door Motor / Data List /

  1. According to the display on the tester, read the Data List.

    D-Door Motor 
    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 operated
    OFF: Driver side power window 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 operated
    OFF: Driver side power window 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 operated
    OFF: Driver side power window switch not operated
    		-

    OK:
    The tester display changes normally when master switch is operated.



NG
Go to step 5
OK

END (DUE TO KEEPING SWITCH OPERATED FOR 20 SECONDS OR MORE) 

5.CHECK HARNESS AND CONNECTOR (POWER WINDOW MASTER SWITCH - POWER WINDOW REGULATOR MOTOR)


    B210238E03

  1. Disconnect the F1 or E1 power window regulator master switch connector.

  1. Disconnect the F4 or E4 power window regulator motor assembly connector.

  1. Measure the resistance according to the value(s) in the table below.

    Standard Resistance:
    for LHD 
    Tester Connection
    		Condition
    		Specified Condition
    F1-20 (UP) - F4-10 (UP)
    		Always
    		Below 1 Ω
    F1-20 (UP) or F4-10 (UP) -Body ground
    		Always
    		10 kΩ or higher
    F1-15 (DOWN) - F4-7 (DOWN)
    		Always
    		Below 1 Ω
    F1-15 (DOWN) or F4-7 (DOWN) - Body ground
    		Always
    		10 kΩ or higher
    for RHD 
    Tester Connection
    		Condition
    		Specified Condition
    E1-20 (UP) - E4-10 (UP)
    		Always
    		Below 1 Ω
    E1-20 (UP) or E4-10 (UP) -Body ground
    		Always
    		10 kΩ or higher
    E1-15 (DOWN) - E4-7 (DOWN)
    		Always
    		Below 1 Ω
    E1-15 (DOWN) or E4-7 (DOWN) - Body ground
    		Always
    		10 kΩ or higher

    Text in Illustration 
    *1
    		Front view of wire harness connector
    (to Power Window Regulator Master Switch Assembly)
    *2
    		Front view of wire harness connector
    (to Front Power Window Regulator Motor Assembly)
    *3
    		for LHD
    *4
    		for RHD

  1. Reconnect the power window regulator motor assembly connector.

  1. Reconnect the power window regulator master switch assembly connector.



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE FRONT DOOR WINDOW REGULATOR SUB-ASSEMBLY (DRIVER SIDE) (Click here)  

6.READ VALUE USING INTELLIGENT TESTER (P-DOOR MOTOR)

  1. Connect the intelligent tester to the DLC3.

  1. Turn the ignition switch to ON.

  1. Turn the tester on.

  1. Enter the following menus: Body / P-Door Motor / Data List /

  1. According to the display on the tester, read the Data List.

    P-Door Motor 
    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 regulator 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 regulator 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 regulator switch not operated
    		-

    OK:
    The tester display changes normally when master switch is operated.



NG
Go to step 7
OK

END (DUE TO KEEPING SWITCH OPERATED FOR 20 SECONDS OR MORE) 

7.INSPECT POWER WINDOW REGULATOR SWITCH ASSEMBLY


    B210239E01

  1. Remove the power window regulator switch assembly (Click here).

  1. Measure the resistance according to the value(s) in the table below.

    Standard Resistance:
    Tester Connection
    		Switch Condition
    		Specified Condition
    6 (UP) - 1 (GND)
    		MANUAL UP operation
    		Below 1 Ω
    7 (DOWN) - 1 (GND)
    		MANUAL DOWN operation
    		Below 1 Ω
    8 (AUTO) - 1 (GND)
    		AUTO UP/DOWN operation
    		Below 1 Ω

    Text in Illustration 
    *1
    		Component without harness connected
    (Power Window Regulator Switch Assembly)

  1. Reinstall the power window regulator switch assembly.



NG
REPLACE POWER WINDOW REGULATOR SWITCH ASSEMBLY (Click here)
OK


8.CHECK HARNESS AND CONNECTOR (POWER WINDOW REGULATOR SWITCH - POWER WINDOW REGULATOR MOTOR)


    B210240E03

  1. Disconnect the E2 or F2 power window regulator switch assembly connector.

  1. Disconnect the E4 or F4 power window regulator motor assembly connector.

  1. Measure the resistance according to the value(s) in the table below.

    Standard Resistance:
    for LHD 
    Tester Connection
    		Condition
    		Specified Condition
    E2-6 (UP) - E4-10 (UP)
    		Always
    		Below 1 Ω
    E2-6 (UP) or E4-10 (UP) - Body ground
    		Always
    		10 kΩ or higher
    E2-7 (DOWN) - E4-7 (DOWN)
    		Always
    		Below 1 Ω
    E2-7 (DOWN) or E4-7 (DOWN) - Body ground
    		Always
    		10 kΩ or higher
    E2-8 (AUTO) - E4-4 (AUTO)
    		Always
    		Below 1 Ω
    E2-8 (AUTO) or E4-4 (AUTO) - Body ground
    		Always
    		10 kΩ or higher
    for RHD 
    Tester Connection
    		Condition
    		Specified Condition
    F2-6 (UP) - F4-10 (UP)
    		Always
    		Below 1 Ω
    F2-6 (UP) or F4-10 (UP) - Body ground
    		Always
    		10 kΩ or higher
    F2-7 (DOWN) - F4-7 (DOWN)
    		Always
    		Below 1 Ω
    F2-7 (DOWN) or F4-7 (DOWN) - Body ground
    		Always
    		10 kΩ or higher
    F2-8 (AUTO) - F4-4 (AUTO)
    		Always
    		Below 1 Ω
    F2-8 (AUTO) or F4-4 (AUTO) - Body ground
    		Always
    		10 kΩ or higher

    Text in Illustration 
    *1
    		Front view of wire harness connector
    (to Power Window Regulator Switch Assembly)
    *2
    		Front view of wire harness connector
    (to Front Power Window Regulator Motor Assembly)
    *3
    		for LHD
    *4
    		for RHD

  1. Reconnect the power window regulator motor assembly connector.

  1. Reconnect the power window regulator switch assembly connector.



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE FRONT DOOR WINDOW REGULATOR SUB-ASSEMBLY (PASSENGER SIDE) (Click here)