Dtc B2312 Power Window Switch Malfunction

Vehicle Exterior. Land Cruiser. Urj200, 202 Grj200 Vdj200
Window Glass. Land Cruiser. Urj200, 202 Grj200 Vdj200

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CLEAR DTC

CHECK FOR DTC

INSPECT MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY

READ VALUE USING INTELLIGENT TESTER (DRIVER SIDE POWER WINDOW REGULATOR MOTOR)

CHECK HARNESS AND CONNECTOR (MULTIPLEX NETWORK MASTER SWITCH - FRONT POWER WINDOW REGULATOR MOTOR AND BODY GROUND)

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 stored when the ECU built into the regulator motor determines that the power window switch is stuck.
HINT:
This DTC may be stored for all the windows.
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:
    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.

DTC Code
DTC Detection Condition
Trouble Area
B2312
  1. The multiplex network master switch assembly is stuck.
  2. The multiplex network master switch assembly is held in the same position for more than 20 sec.
  1. Multiplex network master switch assembly
  2. Power window regulator motor assembly LH (for LHD)
  3. Power window regulator motor assembly RH (for RHD)
  4. Harness or connector
  5. Multiplex network master switch assembly held in same position for more than 20 sec.

WIRING DIAGRAM


Land Cruiser. Urj200, 202 Grj200 Vdj200.Window Glass.Power Window Control System (For Models With Jam Protection Function On 4 Windows). Dtc B2312 Power Window Switch Malfunction


INSPECTION PROCEDURE

1.CLEAR DTC

  1. Clear the DTCs (Click here).


NEXT


2.CHECK FOR DTC

  1. Check for DTCs (Click here).

    Result
    Result
    		Proceed to
    B2312 is output.
    		A
    LIN communication DTCs are output.
    		B
    No DTCs output.
    		C


B
GO TO LIN COMMUNICATION SYSTEM (Click here)

C
END (DUE TO KEEPING SWITCH OPERATED FOR 20 SEC. OR MORE)
A


3.INSPECT MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY

  1. Remove the multiplex network master switch assembly (Click here).



  1. for LHD:


    Land Cruiser. Urj200, 202 Grj200 Vdj200.Window Glass.Power Window Control System (For Models With Jam Protection Function On 4 Windows). Dtc B2312 Power Window Switch Malfunction


    Text in Illustration
    *1
    		Driver Switch
    		*2
    		Front Passenger Switch
    *3
    		Rear RH Side Switch
    		*4
    		Rear LH Side Switch
    *5
    		Window Lock Switch
    		*6
    		Illumination

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

      Standard Resistance:

      Driver Side Switch
      Tester Connection
      		Window Lock Switch Condition
      		Power Window Switch Condition
      		Specified Condition
      8 (U) - 1 (E) - 4 (AUTO)
      5 (D) - 6 (B)
      		Always (ON/OFF)
      		UP AUTO
      		Below 1 Ω
      8 (U) - 1(E)
      5 (D) - 6 (B)
      		Always (ON/OFF)
      		UP MANUAL
      		Below 1 Ω
      8 (U) - 5 (D) - 6 (B)
      		Always (ON/OFF)
      		OFF
      		Below 1 Ω
      5 (D) - 1 (E)
      8 (U) - 6 (B)
      		Always (ON/OFF)
      		DOWN MANUAL
      		Below 1 Ω
      4 (AUTO) - 5(D) - 1 (E)
      8 (U) - 6 (B)
      		Always (ON/OFF)
      		DOWN AUTO
      		Below 1 Ω

      Passenger Side Switch
      Tester Connection
      		Window Lock Switch Condition
      		Power Window Switch Condition
      		Specified Condition
      6 (B) - 16 (U)
      1 (E) - 15 (D)
      		OFF
      		UP
      		Below 1 Ω
      1 (E) - 16 (U)
      1 (E) - 15 (D)
      		OFF
      		OFF
      		Below 1 Ω
      1 (E) - 16 (U)
      6 (B) - 15 (D)
      		OFF
      		DOWN
      		Below 1 Ω
      6 (B) - 16 (U)
      		ON
      		UP
      		Below 1 Ω
      16 (U) - 15 (D)
      		ON
      		OFF
      		Below 1 Ω
      6 (B) - 15 (D)
      		ON
      		DOWN
      		Below 1 Ω

      Rear RH Side Switch
      Tester Connection
      		Window Lock Switch Condition
      		Power Window Switch Condition
      		Specified Condition
      6 (B) - 10 (U)
      1 (E) - 18 (D)
      		OFF
      		UP
      		Below 1 Ω
      1 (E) - 18 (D)
      1 (E) - 10 (U)
      		OFF
      		OFF
      		Below 1 Ω
      6 (B) - 18 (D)
      1 (E) - 10 (U)
      		OFF
      		DOWN
      		Below 1 Ω
      6 (B) - 10 (U)
      		ON
      		UP
      		Below 1 Ω
      18 (D) - 10 (U)
      		ON
      		OFF
      		Below 1 Ω
      6 (B) - 18 (D)
      		ON
      		DOWN
      		Below 1 Ω

      Rear LH Side Switch
      Tester Connection
      		Window Lock Switch Condition
      		Power Window Switch Condition
      		Specified Condition
      6 (B) - 12 (U)
      1 (E) - 13 (D)
      		OFF
      		UP
      		Below 1 Ω
      1 (E) - 13 (D)
      1 (E) - 12 (U)
      		OFF
      		OFF
      		Below 1 Ω
      6 (B) - 13 (D)
      1 (E) - 12 (U)
      		OFF
      		DOWN
      		Below 1 Ω
      6 (B) - 12 (U)
      		ON
      		UP
      		Below 1 Ω
      13 (D) - 12 (U)
      		ON
      		OFF
      		Below 1 Ω
      6 (B) - 13 (D)
      		ON
      		DOWN
      		Below 1 Ω
      If the result is not as specified, replace the power window regulator master switch assembly.

    2. Apply battery voltage to the power window regulator master switch and check that the illumination comes on.

      OK:
      Measurement Condition
      		Specified Condition
      Battery positive (+) → Terminal 3 (LED+)
      Battery negative (-) → Terminal 1 (E)
      		Illumination comes on
      If the result is not as specified, replace the power window regulator master switch assembly.


  1. for RHD:


    Land Cruiser. Urj200, 202 Grj200 Vdj200.Window Glass.Power Window Control System (For Models With Jam Protection Function On 4 Windows). Dtc B2312 Power Window Switch Malfunction


    Text in Illustration
    *1
    		Driver Switch
    		*2
    		Front Passenger Switch
    *3
    		Rear RH Side Switch
    		*4
    		Rear LH Side Switch
    *5
    		Window Lock Switch
    		*6
    		Illumination

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

      Standard Resistance:

      Driver Side Switch
      Tester Connection
      		Window Lock Switch Condition
      		Power Window Switch Condition
      		Specified Condition
      1 (U) - 9 (E) - 4 (AUTO)
      5 (D) - 6 (B)
      		Always (ON/OFF)
      		UP AUTO
      		Below 1 Ω
      1 (U) - 9 (E)
      5 (D) - 6 (B)
      		Always (ON/OFF)
      		UP MANUAL
      		Below 1 Ω
      1 (U) - 5 (D) - 6 (B)
      		Always (ON/OFF)
      		OFF
      		Below 1 Ω
      5 (D) - 9 (E)
      1 (U) - 6 (B)
      		Always (ON/OFF)
      		DOWN MANUAL
      		Below 1 Ω
      4 (AUTO) - 5 (D) - 9 (E)
      1 (U) - 6 (B)
      		Always (ON/OFF)
      		DOWN AUTO
      		Below 1 Ω

      Passenger Side Switch
      Tester Connection
      		Window Lock Switch Condition
      		Power Window Switch Condition
      		Specified Condition
      6 (B) - 12 (U)
      9 (E) - 13 (D)
      		OFF
      		UP
      		Below 1 Ω
      9 (E) - 12 (U)
      9 (E) - 13 (D)
      		OFF
      		OFF
      		Below 1 Ω
      9 (E) - 12 (U)
      6 (B) - 13 (D)
      		OFF
      		DOWN
      		Below 1 Ω
      6 (B) - 12 (U)
      		ON
      		UP
      		Below 1 Ω
      12 (U) - 13 (D)
      		ON
      		OFF
      		Below 1 Ω
      6 (B) - 13 (D)
      		ON
      		DOWN
      		Below 1 Ω

      Rear RH Side Switch
      Tester Connection
      		Window Lock Switch Condition
      		Power Window Switch Condition
      		Specified Condition
      6 (B) - 16 (U)
      9 (E) - 15 (D)
      		OFF
      		UP
      		Below 1 Ω
      9 (E) - 15 (D)
      9 (E) - 16 (U)
      		OFF
      		OFF
      		Below 1 Ω
      6 (B) - 15 (D)
      9 (E) - 16 (U)
      		OFF
      		DOWN
      		Below 1 Ω
      6 (B) - 16 (U)
      		ON
      		UP
      		Below 1 Ω
      15 (D) - 16 (U)
      		ON
      		OFF
      		Below 1 Ω
      6 (B) - 15 (D)
      		ON
      		DOWN
      		Below 1 Ω

      Rear LH Side Switch
      Tester Connection
      		Window Lock Switch Condition
      		Power Window Switch Condition
      		Specified Condition
      6 (B) - 18 (U)
      9 (E) - 10 (D)
      		OFF
      		UP
      		Below 1 Ω
      9 (E) - 10 (D)
      9 (E) - 18 (U)
      		OFF
      		OFF
      		Below 1 Ω
      6 (B) - 10 (D)
      9 (E) - 18 (U)
      		OFF
      		DOWN
      		Below 1 Ω
      6 (B) - 18 (U)
      		ON
      		UP
      		Below 1 Ω
      10 (D) - 18 (U)
      		ON
      		OFF
      		Below 1 Ω
      6 (B) - 10 (D)
      		ON
      		DOWN
      		Below 1 Ω
      If the result is not as specified, replace the power window regulator master switch assembly.

    2. Apply battery voltage to the power window regulator master switch and check that the illumination comes on.

      OK:
      Measurement Condition
      		Specified Condition
      Battery positive (+) → Terminal 3 (LED+)
      Battery negative (-) → Terminal 9 (E)
      		Illumination comes on
      If the result is not as specified, replace the power window regulator master switch assembly.


NG
REPLACE MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY (Click here)
OK


4.READ VALUE USING INTELLIGENT TESTER (DRIVER SIDE POWER WINDOW REGULATOR MOTOR)

  1. Use the Data List to check if the power window regulator motor is functioning properly (Click here).

    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 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 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 signal / ON or OFF
    		ON: Driver side power window manual down switch operated
    OFF: Driver side power window switch not operated
    		-
    Result
    Result
    		Proceed to
    The display does not change according to operation of the multiplex network master switch.
    		A
    The display changes according to operation of the multiplex network master switch (for LHD).
    		B
    The display changes according to operation of the multiplex network master switch (for RHD).
    		C


B
REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY LH (Click here)

C
REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY RH (Click here)
A


5.CHECK HARNESS AND CONNECTOR (MULTIPLEX NETWORK MASTER SWITCH - FRONT POWER WINDOW REGULATOR MOTOR AND BODY GROUND)
  1. *1: for LHD
  2. *2: for RHD

  1. Disconnect I31*1 or I26*2 multiplex network master switch assembly connector.

  1. Disconnect I12*1 or I4*2 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
    I31-8 (U) - I12-10 (UP)
    		Always
    		Below 1 Ω
    I31-5 (D) - I12-7 (DOWN)
    		Always
    		Below 1 Ω
    I31-4 (AUTO) - I12-4 (AUTO)
    		Always
    		Below 1 Ω
    I31-1 (E) - Body ground
    		Always
    		Below 1 Ω
    I31-8 (U) or I12-10 (UP) - Body ground
    		Always
    		10 kΩ or higher
    I31-5 (D) or I12-7 (DOWN) - Body ground
    		Always
    		10 kΩ or higher
    I31-4 (AUTO) or I12-4 (AUTO) - Body ground
    		Always
    		10 kΩ or higher
    for RHD
    Tester Connection
    		Condition
    		Specified Condition
    I26-1 (U) - I4-10 (UP)
    		Always
    		Below 1 Ω
    I26-5 (D) - I4-7 (DOWN)
    		Always
    		Below 1 Ω
    I26-4 (AUTO) - I4-4 (AUTO)
    		Always
    		Below 1 Ω
    I26-9 (E) - Body ground
    		Always
    		Below 1 Ω
    I26-1 (U) or I4-10 (UP) - Body ground
    		Always
    		10 kΩ or higher
    I26-5 (D) or I4-7 (DOWN) - Body ground
    		Always
    		10 kΩ or higher
    I26-4 (AUTO) or I4-4 (AUTO) - Body ground
    		Always
    		10 kΩ or higher
    Result
    Result
    		Proceed to
    OK (for LHD)
    		A
    OK (for RHD)
    		B
    NG
    		C


B
REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY RH (Click here)

C
REPAIR OR REPLACE HARNESS OR CONNECTOR
A

REPLACE FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY LH (Click here)