Transfer System Rear Differential Lock Switch Circuit

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

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK REAR DIFFERENTIAL LOCK INDICATOR LIGHT

CHECK CAN COMMUNICATION LINE

READ VALUE USING GTS (DIFFERENTIAL LOCK SWITCH)

INSPECT COMBINATION METER ASSEMBLY

INSPECT DIFFERENTIAL LOCK SWITCH

CHECK HARNESS AND CONNECTOR (4 WHEEL DRIVE CONTROL ECU - DIFFERENTIAL LOCK SWITCH)

CHECK CAN COMMUNICATION LINE

READ VALUE USING GTS (REAR DIFFERENTIAL LOCK INDICATOR)

TRANSFER SYSTEM - Rear Differential Lock Switch Circuit


WIRING DIAGRAM


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


INSPECTION PROCEDURE

1.CHECK REAR DIFFERENTIAL LOCK INDICATOR LIGHT

  1. Turn the ignition switch to ON.

  1. Press the differential lock switch.

  1. Check the rear differential lock indicator light.

    Result:

    Result
    		Proceed to
    Rear differential lock indicator light blinks or illuminates
    		A
    Rear differential lock indicator light remains off regardless of switch operation
    		B
    Rear differential lock indicator light remains illuminated regardless of switch operation
    		C
    1. Blinking: Blinks at 0.5 second intervals (0.5 seconds on and 0.5 seconds off)


B
Go to step 2

C
Go to step 7
A

END

2.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


3.READ VALUE USING GTS (DIFFERENTIAL LOCK 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
    Rear Differential Lock Control SW
    		Differential lock switch status/
    ON or OFF
    		ON: RR (LOCK)
    OFF: OFF (FREE)
    		Used only for vehicles with a rear differential lock.
    Always displays OFF for vehicles without a rear differential lock.
    OK:
    OK: Display changes according to differential lock switch operation


NG
Go to step 5
OK


4.INSPECT COMBINATION METER ASSEMBLY

  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 rear differential lock 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)

5.INSPECT DIFFERENTIAL LOCK SWITCH

  1. Remove the differential lock switch (Click here).

  1. Inspect the differential lock switch (Click here).

    OK:
    The differential lock switch operates normally.


NG
REPLACE DIFFERENTIAL LOCK SWITCH (Click here)
OK


6.CHECK HARNESS AND CONNECTOR (4 WHEEL DRIVE CONTROL ECU - DIFFERENTIAL LOCK SWITCH)

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

  1. Disconnect the E87 differential lock switch connector.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    A27-15 (R) - E87-1 (IG)
    		Always
    		Below 1 Ω
    E87-4 (R) - Body ground
    		Always
    		Below 1 Ω
    A27-15 (R) or E87-1 (IG) - Body ground
    		Always
    		10 kΩ or higher

    Result:

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


B
REPLACE 4 WHEEL DRIVE CONTROL ECU (Click here)

B
REPAIR OR REPLACE HARNESS OR CONNECTOR
A

REPLACE 4 WHEEL DRIVE CONTROL ECU (Click here)

7.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


8.READ VALUE USING GTS (REAR DIFFERENTIAL LOCK INDICATOR)

  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
    Rear Differential Lock Indicator Request
    		Rear differential lock indicator light request/
    Blink3, Blink2, Blink1, ON or OFF
    1. Blink3: Indicator light rapidly blinks
    2. Blink2: Indicator light blinks 3 times
    3. Blink1: Indicator light blinks
    4. ON: Indicator light illuminates
    5. 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 0.25seconds off)
    Used only for vehicles with a rear differential lock.
    Always displays OFF for vehicles without a rear differential lock.

  1. Turn the differential lock switch on and off several times and check the GTS display condition of the rear differential lock indicator light.

    Result:

    Result
    		Proceed to
    Data List continues to display ON even when differential lock switch is operated
    		for LHD
    		A
    for RHD
    		B
    Data List display changes according to differential lock switch operation
    		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)