TRANSFER SYSTEM Center Differential Lock Switch Circuit

WIRING DIAGRAM

B001ZL2E03

PROCEDURE


  1. CHECK CENTER DIFFERENTIAL LOCK INDICATOR LIGHT


    1. Turn the ignition switch to ON.

    2. Check the center differential lock indicator light.

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

      Press the center differential lock switch (integration control and panel assembly) .

      for Manual Transmission w/ Entry and Start System:

      Press the center differential lock switch.

      w/o Entry and Start System:

      Press the center differential lock switch.

    4. After 60 seconds, check the center differential lock indicator light.

      Result
      Result Proceed to
      The center differential lock indicator light blinks, turns off or illuminates A
      Center differential lock indicator light remains off regardless of switch operation B
      Center differential lock indicator remains illuminated regardless of switch operation C
      Center differential lock indicator light rapidly blinks D

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

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


    A

    END

    C

    CHECK CAN COMMUNICATION LINE Click here

    D

    Go to P17D0 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 (for LHD with Central Gateway ECU: See page , for LHD without Central Gateway ECU: See page , for RHD with Central Gateway ECU: See page , 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


    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
      Center Differential Lock Control SW

      Center differential lock switch status/

      ON or OFF

      ON: Switch pressed and held

      OFF: Switch not pressed

      		 -
      OK
      for Automatic Transmission w/ Entry and Start System:
      Display changes according to center differential lock switch (integration control and panel assembly) operation.
      for Manual Transmission w/ Entry and Start System:
      Display changes according to center differential lock switch operation.
      w/o Entry and Start System:
      Display changes according to center differential lock switch operation.

    NG

    INSPECT INTEGRATION CONTROL AND PANEL ASSEMBLY OR CENTER 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 center 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

    A

    REPLACE 4 WHEEL DRIVE CONTROL ECU Click here

    B

    REPLACE 4 WHEEL DRIVE CONTROL ECU Click here

    C

    INSPECT METER / GAUGE SYSTEM Click here

  5. INSPECT INTEGRATION CONTROL AND PANEL ASSEMBLY OR CENTER DIFFERENTIAL LOCK SWITCH


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


      1. Remove the center differential lock switch (integration control and panel assembly) Click here.

      2. Inspect the center differential lock switch (integration control and panel assembly) Click here.

        OK
        The center differential lock switch (integration control and panel assembly) operates normally.

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


      1. Remove the center differential lock switch Click here.

      2. Inspect the center differential lock switch Click here.

        OK
        The center differential lock switch operates normally.

    3. w/o Entry and Start System:


      1. Remove the center differential lock switch Click here.

      2. Inspect the center differential lock switch Click here.

        OK
        The center differential lock 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 CENTER DIFFERENTIAL LOCK SWITCH Click here

    D

    REPLACE CENTER DIFFERENTIAL LOCK SWITCH Click here

    A

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


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

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

      Disconnect the V9 center differential lock switch (integration control and panel assembly) connector.

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

      Disconnect the E178 center differential lock switch connector.

    4. w/o Entry and Start System:

      Disconnect the G24 center differential lock switch connector.

    5. 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
      A27-14 (DL) - V9-9 (CPU) Always Below 1 Ω
      V9-5 (E) - Body ground Always Below 1 Ω
      for Manual Transmission w/ Entry and Start System:
      Tester Connection Condition Specified Condition
      A27-14 (DL) - E178-9 (CPU) Always Below 1 Ω
      E178-6 (E) - Body ground Always Below 1 Ω
      w/o Entry and Start System:
      Tester Connection Condition Specified Condition
      A27-14 (DL) - G24-9 (CPU) Always Below 1 Ω
      G24-6 (E) - Body ground Always Below 1 Ω

    A

    REPLACE 4 WHEEL DRIVE CONTROL ECU Click here

    B

    REPLACE 4 WHEEL DRIVE CONTROL ECU Click here

    C

    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 (for LHD with Central Gateway ECU: See page , for LHD without Central Gateway ECU: See page , for RHD with Central Gateway ECU: See page , 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 (CENTER DIFFERENTIAL LOCK INDICATOR LIGHT)


    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
      Center Differential Lock Indicator Request

      Center 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)

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

        Turn the differential lock switch (integration control and panel assembly) on and off several times and check the GTS display condition of the center differential lock indicator light.

        for Manual Transmission w/ Entry and Start System:

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

        w/o Entry and Start System:

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

        Result
        Result Proceed to

        Data List continues to display ON even when center differential lock switch (integration control and panel assembly) is operated*1

        Data List continues to display ON even when center differential lock switch is operated*2. *3

        		 for LHD A
        for RHD B

        Data List display changes according to center differential lock switch (integration control and panel assembly) operation*1

        Data List display changes according to center differential lock switch operation*2, *3

        		 C

        • *1: for Automatic Transmission w/ Entry and Start System

        • *2: for Manual Transmission w/ Entry and Start System

        • *3: w/o Entry and Start System


    A

    REPLACE 4 WHEEL DRIVE CONTROL ECU Click here

    B

    REPLACE 4 WHEEL DRIVE CONTROL ECU Click here

    C

    INSPECT METER / GAUGE SYSTEM Click here