DIFFERENTIAL SYSTEM(w/ Differential Lock) Rear Differential Lock Switch Circuit

WIRING DIAGRAM

B001GIQE01

PROCEDURE


  1. CHECK REAR DIFFERENTIAL LOCK INDICATOR LIGHT


    1. Turn the ignition switch to ON.

    2. w/ Combination Switch:

      Press the differential lock switch (combination switch assembly).

      w/o Combination Switch:

      Press the differential lock switch.

    3. 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

      • Blinking: Blinks at 0.5 second intervals (0.5 seconds on and 0.5 seconds off)


    A

    END

    C

    CHECK CAN COMMUNICATION LINE Click here

    B

  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.

      Click here

      OK
      "Bus Check" indicates no malfunctions in CAN communication.
      Result
      Result Proceed to
      DTC is not output A
      DTC is output B

    B

    CHECK CAN COMMUNICATION SYSTEM Click here

    A

  3. READ VALUE USING GTS (DIFFERENTIAL LOCK SWITCH)


    1. Turn the ignition switch off.

    2. Connect the GTS to the DLC3.

    3. Turn the GTS on.

    4. Turn the ignition switch to ON.

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

    6. 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: ON (LOCK)

      OFF: OFF (FREE)

      		 -
      OK
      w/ Combination Switch:
      OK: Display changes according to differential lock switch (combination switch assembly) operation
      w/o Combination Switch:
      OK: Display changes according to differential lock switch operation

    NG

    INSPECT COMBINATION SWITCH ASSEMBLY OR DIFFERENTIAL LOCK SWITCH Click here

    OK

  4. INSPECT COMBINATION METER ASSEMBLY


    1. Turn the ignition switch off.

    2. Perform an Active Test of the combination meter assembly using the GTS Click here.

    3. Check the combination meter assembly.

      OK
      The rear differential lock indicator light turns on or off in accordance with the GTS.

    OK

    REPLACE 4 WHEEL DRIVE CONTROL ECU Click here

    NG

    CHECK METER / GAUGE SYSTEM Click here

  5. INSPECT COMBINATION SWITCH ASSEMBLY OR DIFFERENTIAL LOCK SWITCH


    1. w/ Combination Switch:

      Remove the differential lock switch (combination switch assembly) Click here.

      w/o Combination Switch:

      Remove the differential lock switch Click here.

    2. w/ Combination Switch:

      Inspect the differential lock switch (combination switch assembly) Click here.

      w/o Combination Switch:

      Inspect the differential lock switch Click here.

      OK
      w/ Combination Switch:
      The differential lock switch (combination switch assembly) operates normally.
      w/o Combination Switch:
      The differential lock switch operates normally.
      Result
      Result Proceed to
      OK A
      NG w/ Combination Switch B
      w/o Combination Switch C

    B

    REPLACE COMBINATION SWITCH ASSEMBLY Click here

    C

    REPLACE DIFFERENTIAL LOCK SWITCH Click here

    A

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


    1. Disconnect the G53 4 wheel drive control ECU connector.

    2. w/ Combination Switch:

      Disconnect the G307 differential lock switch (combination switch assembly) connector.

    3. w/o Combination Switch:

      Disconnect the G233 differential lock switch (combination switch assembly) connector.

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

      Standard Resistance
      w/ Combination Switch:
      Tester Connection Condition Specified Condition
      G53-15 (R) - G307-5 (B) Always Below 1 Ω
      G307-2 (E) - Body ground Always Below 1 Ω
      G53-15 (R) or G307-5 (B) - Body ground Always 10 kΩ or higher
      w/o Combination Switch:
      Tester Connection Condition Specified Condition
      G53-15 (R) - G233-5 (B) Always Below 1 Ω
      G233-2 (E) - Body ground Always Below 1 Ω
      G53-15 (R) or G233-5 (B) - Body ground Always 10 kΩ or higher

    OK

    REPLACE 4 WHEEL DRIVE CONTROL ECU Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  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.

      Click here

      OK
      "Bus Check" indicates no malfunctions in CAN communication.
      Result
      Result Proceed to
      DTC is not output A
      DTC is output B

    B

    CHECK CAN COMMUNICATION SYSTEM Click here

    A

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


    1. Turn the ignition switch off.

    2. Connect the GTS to the DLC3.

    3. Turn the GTS on.

    4. Turn the ignition switch to ON.

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

    6. 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

      • Blink3: Indicator light rapidly blinks

      • Blink2: Indicator light blinks 3 times

      • Blink1: Indicator light blinks

      • ON: Indicator light illuminates

      • OFF: Indicator light turns off

      • Blinking: 0.5 second intervals (0.5 seconds on and 0.5 seconds off)

      • Rapidly blinking: 0.25 second intervals (0.25 seconds on and 0.25 seconds off)

    7. w/ Combination Switch:

      Turn the differential lock switch (combination switch assembly) on and off several times and check the GTS display condition of the rear differential lock indicator light.

      w/o Combination Switch:

      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 (combination switch assembly) is operated*1

      Data List continues to display ON even when differential lock switch is operated*2

      		 A

      Data List display changes according to differential lock switch (combination switch assembly) operation*1

      Data List display changes according to differential lock switch operation*2

      		 B

      • *1: w/ Combination Switch

      • *2: w/o Combination Switch


    A

    REPLACE 4 WHEEL DRIVE CONTROL ECU Click here

    B

    CHECK METER / GAUGE SYSTEM Click here