Transfer System 4Wd Control Switch Circuit

Drivetrain. Land Cruiser. Urj200, 202 Grj200 Vdj200
Jf2A Transfer 4Wd Awd. Land Cruiser. Urj200, 202 Grj200 Vdj200

WIRING DIAGRAM

INSPECTION PROCEDURE

CONFIRM PROBLEM SYMPTOM

CHECK 4LO INDICATOR LIGHT

CHECK CAN COMMUNICATION LINE

READ VALUE USING GTS (TRANSFER POSITION SWITCH)

CHECK COMBINATION METER ASSEMBLY (4LO INDICATOR LIGHT)

INSPECT INTEGRATION CONTROL AND PANEL ASSEMBLY OR TRANSFER POSITION SWITCH

CHECK HARNESS AND CONNECTOR (4 WHEEL DRIVE CONTROL ECU - INTEGRATION CONTROL AND PANEL ASSEMBLY OR TRANSFER POSITION SWITCH

CHECK 4LO INDICATOR LIGHT

CHECK CAN COMMUNICATION LINE

READ VALUE USING GTS (4LO INDICATOR LIGHT)

TRANSFER SYSTEM - 4WD Control Switch Circuit


WIRING DIAGRAM


Land Cruiser. Urj200, 202 Grj200 Vdj200.Jf2A Transfer 4Wd Awd.Transfer System.Transfer System 4Wd Control Switch Circuit


INSPECTION PROCEDURE

1.CONFIRM PROBLEM SYMPTOM

  1. Confirm the problem symptoms.

    Result
    Result
    		Proceed to
    The 4LO indicator light remains off after operating the transfer position switch (integration control and panel assembly) to L4*1
    The 4LO indicator light remains off after operating the transfer position switch to L4*2, *3
    		A
    The 4LO indicator light remains on after operating the transfer position switch to H4*1
    The 4LO indicator light remains on after operating the transfer position switch (integration control and panel assembly) to H4*2, *3
    		B
    1. *1: for Automatic Transmission w/ Entry and Start System
    2. *2: for Manual Transmission w/ Entry and Start System
    3. *3: w/o Entry and Start System


B
Go to step 8
A


2.CHECK 4LO INDICATOR LIGHT
HINT:
Perform the following procedure with the vehicle stopped.

  1. Turn the ignition switch to ON.

  1. for Automatic Transmission:
    Move the shift lever to N.
    for Manual Transmission:
    Depress the clutch pedal.

  1. for Automatic Transmission w/ Entry and Start System:
    Turn the transfer position switch (integration control and panel assembly) to L4.
    for Manual Transmission w/ Entry and Start System:
    Turn the transfer position switch to L4.
    w/o Entry and Start System:
    Turn the transfer position switch to L4.

  1. Check the 4LO indicator light.

    Result
    Result
    		Proceed to
    The 4LO indicator light remains off
    		A
    The 4LO indicator light is blinking or illuminated
    		B
    1. Blinking: Blinks at 0.5 second intervals (0.5 seconds on and 0.5 seconds off)


B
END
A


3.CHECK CAN COMMUNICATION LINE

  1. Select "Bus Check" from the System Selection Menu screen, and follow the prompts on the screen to inspect the CAN bus (for LHD with Central Gateway ECU: Click here, for LHD without Central Gateway ECU: Click here, for RHD with Central Gateway ECU: Click here, for RHD without Central Gateway ECU: Click here).

    OK:
    "Bus Check" indicates no malfunctions in CAN communication.

    Result
    Result
    		Proceed to
    DTC is not output
    		A
    DTC is output
    		for LHD with Central Gateway ECU
    		B
    for LHD without Central Gateway ECU
    		C
    for RHD with Central Gateway ECU
    		D
    for RHD without Central Gateway ECU
    		E


B
CHECK CAN COMMUNICATION SYSTEM (Click here)

C
CHECK CAN COMMUNICATION SYSTEM (Click here)

D
CHECK CAN COMMUNICATION SYSTEM (Click here)

E
CHECK CAN COMMUNICATION SYSTEM (Click here)
A


4.READ VALUE USING GTS (TRANSFER POSITION SWITCH)

  1. Turn the ignition switch off.

  1. Connect the GTS to the DLC3.

  1. Turn the GTS on.

  1. Turn the ignition switch to ON.

  1. Enter the following menus: Powertrain / Four Wheel Drive / Data List.

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

    Four Wheel Drive
    Tester Display
    		Measurement Item/Range
    		Normal Condition
    		Diagnostic Note
    Transfer Position Control SW
    		Transfer position switch status/
    ON or OFF
    		ON: L4
    OFF: H4
    		-
    OK:
    for Automatic Transmission w/ Entry and Start System:
    Display changes according to transfer position switch (integration control and panel assembly) operation.
    for Manual Transmission w/ Entry and Start System:
    Display changes according to transfer position switch operation.
    w/o Entry and Start System:
    Display changes according to transfer position switch operation.


NG
Go to step 6
OK


5.CHECK COMBINATION METER ASSEMBLY (4LO INDICATOR LIGHT)

  1. Turn the ignition switch off.

  1. Perform an Active Test of the combination meter assembly using the GTS (Click here).

  1. Check the combination meter assembly.

    OK:
    The 4LO indicator light turns on or off in accordance with the GTS.

    Result:

    Result
    		Proceed to
    OK
    		for LHD
    		A
    for RHD
    		B
    NG
    		C


B
REPLACE 4 WHEEL DRIVE CONTROL ECU (Click here)

C
CHECK METER / GAUGE SYSTEM (Click here)
A

REPLACE 4 WHEEL DRIVE CONTROL ECU (Click here)

6.INSPECT INTEGRATION CONTROL AND PANEL ASSEMBLY OR TRANSFER POSITION SWITCH

  1. for Automatic Transmission w/ Entry and Start System:

    1. Remove the transfer position switch (integration control and panel assembly) (Click here).

    2. Inspect the transfer position switch (integration control and panel assembly) (Click here).

      OK:
      The transfer position switch (integration control and panel assembly) operates normally.

  1. for Manual Transmission w/ Entry and Start System:

    1. Remove the transfer position switch (Click here).

    2. Inspect the transfer position switch (Click here).

      OK:
      The transfer position switch operates normally.

  1. w/o Entry and Start System:

    1. Remove the transfer position switch (Click here).

    2. Inspect the transfer position switch (Click here).

      OK:
      The transfer position switch operates normally.

Result:

Result
Proceed to
OK
A
NG
for Automatic Transmission w/ Entry and Start System
B
for Manual Transmission w/ Entry and Start System
C
w/o Entry and Start System
D


B
REPLACE INTEGRATION CONTROL AND PANEL ASSEMBLY (Click here)

C
REPLACE TRANSFER POSITION SWITCH (Click here)

D
REPLACE TRANSFER POSITION SWITCH (Click here)
A


7.CHECK HARNESS AND CONNECTOR (4 WHEEL DRIVE CONTROL ECU - INTEGRATION CONTROL AND PANEL ASSEMBLY OR TRANSFER POSITION SWITCH

  1. Disconnect the A27 4 wheel drive control ECU connector.

  1. for Automatic Transmission w/ Entry and Start System:
    Disconnect the V10 transfer position switch (integration control and panel assembly) connector.

  1. for Manual Transmission w/ Entry and Start System:
    Disconnect the V10 transfer position switch connector.

  1. w/o Entry and Start System:
    Disconnect the E179 transfer position switch connector.

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

    Standard Resistance:
    for Automatic Transmission w/ Entry and Start System:
    Tester Connection
    		Condition
    		Specified Condition
    A27-13 (LO) - V10-3 (2WD)
    		Always
    		Below 1 Ω
    A27-13 (LO) or V10-3 (2WD) - Body ground
    		Always
    		10 kΩ or higher
    V10-7 (GND2) - Body ground
    		Always
    		Below 1 Ω
    for Manual Transmission w/ Entry and Start System:
    Tester Connection
    		Condition
    		Specified Condition
    A27-13 (LO) - V10-3 (2WD)
    		Always
    		Below 1 Ω
    A27-13 (LO) or V10-3 (2WD) - Body ground
    		Always
    		10 kΩ or higher
    V10-7 (GND2) - Body ground
    		Always
    		Below 1 Ω
    w/o Entry and Start System:
    Tester Connection
    		Condition
    		Specified Condition
    A27-13 (LO) - E179-2 (2WD)
    		Always
    		Below 1 Ω
    A27-13 (LO) or E179-2 (2WD) - Body ground
    		Always
    		10 kΩ or higher
    E179-4 (GND2) - Body ground
    		Always
    		Below 1 Ω

    Result:

    Result
    		Proceed to
    OK
    		for LHD
    		A
    for RHD
    		B
    NG
    		C


B
REPLACE 4 WHEEL DRIVE CONTROL ECU (Click here)

C
REPAIR OR REPLACE HARNESS OR CONNECTOR
A

REPLACE 4 WHEEL DRIVE CONTROL ECU (Click here)

8.CHECK 4LO INDICATOR LIGHT
HINT:
Perform the following procedure with the vehicle stopped.

  1. Turn the ignition switch to ON.

  1. for Automatic Transmission:
    Move the shift lever to N.
    for Manual Transmission:
    Depress the clutch pedal.

  1. for Automatic Transmission w/ Entry and Start System:
    Turn the transfer position switch (integration control and panel assembly) to H4.
    for Manual Transmission w/ Entry and Start System:
    Turn the transfer position switch to H4.
    w/o Entry and Start System:
    Turn the transfer position switch to H4.

  1. Check the 4LO indicator light.

    Result
    Result
    		Proceed to
    The 4LO indicator light remains illuminated
    		A
    The 4LO indicator light is blinking or illuminated
    		B
    1. Blinking: Blinks at 0.5 second intervals (0.5 seconds on and 0.5 seconds off)


B
END
A


9.CHECK CAN COMMUNICATION LINE

  1. Select "Bus Check" from the System Selection Menu screen, and follow the prompts on the screen to inspect the CAN bus (for LHD with Central Gateway ECU: Click here, for LHD without Central Gateway ECU: Click here, for RHD with Central Gateway ECU: Click here, for RHD without Central Gateway ECU: Click here).

    OK:
    "Bus Check" indicates no malfunctions in CAN communication.

    Result
    Result
    		Proceed to
    DTC is not output
    		A
    DTC is output
    		for LHD with Central Gateway ECU
    		B
    for LHD without Central Gateway ECU
    		C
    for RHD with Central Gateway ECU
    		D
    for RHD without Central Gateway ECU
    		E


B
CHECK CAN COMMUNICATION SYSTEM (Click here)

C
CHECK CAN COMMUNICATION SYSTEM (Click here)

D
CHECK CAN COMMUNICATION SYSTEM (Click here)

E
CHECK CAN COMMUNICATION SYSTEM (Click here)
A


10.READ VALUE USING GTS (4LO INDICATOR LIGHT)

  1. Turn the ignition switch off.

  1. Connect the GTS to the DLC3.

  1. Turn the GTS on.

  1. Turn the ignition switch to ON.

  1. Enter the following menus: Powertrain / Four Wheel Drive / Data List.

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

    Four Wheel Drive
    Tester Display
    		Measurement Item/Range
    		Normal Condition
    		Diagnostic Note
    L4 Indicator Request
    		4LO indicator light request/
    Blink3, Blink1, ON, OFF
    1. Blink3: Indicator light rapidly blinks
    2. Blink1: Indicator light blinks
    3. ON: Indicator light illuminates
    4. OFF: Indicator light turns off
    1. Blinking: 0.5 second intervals (0.5 seconds on and 0.5 seconds off)
    2. Rapidly blinking: 0.25 second intervals (0.25 seconds on and 0.25 seconds off)

    1. for Automatic Transmission w/ Entry and Start System:
      Operate the transfer position switch (integration control and panel assembly) several times between H4 and L4, and then check the Techstream display condition of the 4LO indicator light.
      for Manual Transmission w/ Entry and Start System:
      Operate the transfer position switch several times between H4 and L4, and then check the Techstream display condition of the 4LO indicator light.
      w/o Entry and Start System:
      Operate the transfer position switch several times between H4 and L4, and then check the Techstream display condition of the 4LO indicator light.

      Result:

      Result
      		Proceed to
      Data List continues to display ON even when transfer position switch (integration control and panel assembly) is operated*1
      Data List continues to display ON even when transfer position switch is operated*2, *3
      		for LHD
      		A
      for RHD
      		B
      Data List display changes according to transfer position switch (integration control and panel assembly) operation*1
      Data List display changes according to transfer position switch operation*2, *3
      		C
      1. *1: for Automatic Transmission w/ Entry and Start System
      2. *2: for Manual Transmission w/ Entry and Start System
      3. *3: w/o Entry and Start System


B
REPLACE 4 WHEEL DRIVE CONTROL ECU (Click here)

C
CHECK METER / GAUGE SYSTEM (Click here)
A

REPLACE 4 WHEEL DRIVE CONTROL ECU (Click here)