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Inspection [08/2019 - ]: Procedure

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  1. INSPECT TRANSFER INPUT SHAFT 
    1. Using a micrometer, measure the diameter of the transfer input shaft journal surface.
      GTY200989Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Minimum diameter

      47.59 mm (1.874 in.)

      If the diameter is less than the minimum, replace the transfer input shaft.

    2. Using a dial indicator, measure the inside diameter of the transfer input shaft bushing.
      GTY182235Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Maximum inside diameter

      39.14 mm (1.540 in.)

      If the inside diameter is more than the maximum, replace the transfer input shaft.

  2. INSPECT TRANSFER LOW PLANETARY GEAR ASSEMBLY 
    1. Using a feeler gauge, measure the thrust clearance of the pinion gear.
      GTY200990Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard clearance

      0.11 to 0.84 mm (0.00434 to 0.0330 in.)

      Maximum clearance

      0.84 mm (0.0330 in.)

      If the clearance is more than the maximum, replace the transfer low planetary gear assembly.

    2. Using a dial indicator, measure the radial clearance of the pinion gear.
      GTY182221Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard clearance

      0.009 to 0.038 mm (0.000355 to 0.00149 in.)

      Maximum clearance

      0.038 mm (0.00149 in.)

      If the clearance is more than the maximum, replace the transfer low planetary gear assembly.

  3. INSPECT TRANSFER DRIVE SPROCKET SUB-ASSEMBLY 
    1. Using a feeler gauge, measure the thrust clearance.
      GTY611526Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard clearance

      0.10 to 0.25 mm (0.00394 to 0.00984 in.)

      Maximum clearance

      0.25 mm (0.00984 in.)

      If the thrust clearance is more than the maximum, replace the transfer drive sprocket sub-assembly.

    2. Using a dial indicator, measure the radial clearance between the drive sprocket and output shaft with the needle roller bearing installed.
      GTY200992Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard radial clearance

      0.010 to 0.055 mm (0.000394 to 0.00216 in.)

      Maximum radial clearance

      0.055 mm (0.00216 in.)

      If the radial clearance is more than the maximum, replace the transfer drive sprocket sub-assembly or needle roller bearing.

  4. INSPECT REAR TRANSFER OUTPUT SHAFT 
    1. Using a micrometer, measure the diameter of the rear transfer output shaft journal surface.

      Minimum diameter

      Journal Diameter
      A 27.98 mm (1.102 in.)
      B 36.98 mm (1.456 in.)
      GTY914514Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      If the diameter is less than the minimum, replace the rear transfer output shaft.

  5. INSPECT FRONT DRIVE CLUTCH SLEEVE AND NO. 1 TRANSFER GEAR SHIFT FORK CLEARANCE 
    1. Using a feeler gauge, measure the clearance between the front drive clutch sleeve and No. 1 transfer gear shift fork.
      GTY206021Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Maximum clearance

      0.35 mm (0.0137 in.)

      If the clearance is more than the maximum, replace the front drive clutch sleeve or No. 1 transfer gear shift fork.

  6. INSPECT TRANSFER HIGH AND LOW CLUTCH SLEEVE AND NO. 2 TRANSFER GEAR SHIFT FORK CLEARANCE 
    1. Using a feeler gauge, measure the clearance between the transfer high and low clutch sleeve and No. 2 transfer gear shift fork.
      GTY206022Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Maximum clearance

      0.35 mm (0.0137 in.)

      If the clearance is more than the maximum, replace the transfer high and low clutch sleeve or No. 2 transfer gear shift fork.

  7. INSPECT TRANSFER SHIFT ACTUATOR ASSEMBLY 
    1. Inspect the transfer shift actuator assembly.
      NOTE:
      • Perform this inspection with the actuator removed from the vehicle.

        If this inspection is performed with the actuator installed to the vehicle, the actuator will be damaged.

      • When inspecting the actuator, operate it with the lines connected via a relay.

        If the lines are not connected via a relay and battery voltage is directly applied to the actuator, the actuator will be damaged.

      HINT: 

      • When inspecting the transfer shift actuator assembly, refer to the wiring diagram.

        Refer to SYSTEM DIAGRAM [08/2019 - ]

      • When performing the operation described above, use the DEF relay.
      1. Check the 2WD to 4WD HIGH switch.

        Connect lines via a relay as shown in the illustration, then check that the actuator fork moves from the 2WD to 4WD HIGH position.

        GTY943228Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        TEXT IN ILLUSTRATION

        *1 DEF Relay - -
        *a 2WD to 4WD HIGH *b Component without harness connected
        (Transfer Shift Actuator Assembly)
        1. After the 2WD to 4WD HIGH switch is complete, inspect the 4WD detection switch, L4 detection switch and limit switch.

          Standard Resistance

          Tester Connection Switch Condition Specified Condition
          3 (TL1) - 6 (GND1) After 2WD to 4WD HIGH switch is complete 10 kΩ or higher
          4 (TL2) - 6 (GND1) After 2WD to 4WD HIGH switch is complete 10 kΩ or higher
          5 (TL3) - 6 (GND1) After 2WD to 4WD HIGH switch is complete Below 1 Ω
          9 (L4) - 10 (GND) After 2WD to 4WD HIGH switch is complete 10 kΩ or higher
          12 (B) - 10 (GND) After 2WD to 4WD HIGH switch is complete Below 1 Ω

        If the result is not as specified, replace the transfer shift actuator assembly.

      2. Check the 4WD HIGH to 4WD LOW switch.

        Connect lines via a relay as shown in the illustration, then check that the actuator fork moves from the 4WD HIGH to 4WD LOW position.

        GTY857045Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        TEXT IN ILLUSTRATION

        *1 DEF Relay - -
        *a 4WD HIGH to 4WD LOW *b Component without harness connected
        (Transfer Shift Actuator Assembly)
        1. After the 4WD HIGH to 4WD LOW switch is complete, inspect the 4WD detection switch, L4 detection switch and limit switch.

          Standard Resistance

          Tester Connection Switch Condition Specified Condition
          3 (TL1) - 6 (GND1) After 4WD HIGH to 4WD LOW switch is complete 10 kΩ or higher
          4 (TL2) - 6 (GND1) After 4WD HIGH to 4WD LOW switch is complete Below 1 Ω
          5 (TL3) - 6 (GND1) After 4WD HIGH to 4WD LOW switch is complete 10 kΩ or higher
          9 (L4) - 10 (GND) After 4WD HIGH to 4WD LOW switch is complete Below 1 Ω
          12 (B) - 10 (GND) After 4WD HIGH to 4WD LOW switch is complete Below 1 Ω

        If the result is not as specified, replace the transfer shift actuator assembly.

      3. Check the 4WD LOW to 4WD HIGH switch.

        Connect lines via a relay as shown in the illustration, then check that the actuator fork moves from the 4WD LOW to 4WD HIGH position.

        GTY862491Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        TEXT IN ILLUSTRATION

        *1 DEF Relay - -
        *a 4WD LOW to 4WD HIGH *b Component without harness connected
        (Transfer Shift Actuator Assembly)
        1. After the 4WD LOW to 4WD HIGH switch is complete, inspect the 4WD detection switch, L4 detection switch and limit switch.

          Standard Resistance

          Tester Connection Switch Condition Specified Condition
          3 (TL1) - 6 (GND1) After 4WD LOW to 4WD HIGH switch is complete 10 kΩ or higher
          4 (TL2) - 6 (GND1) After 4WD LOW to 4WD HIGH switch is complete 10 kΩ or higher
          5 (TL3) - 6 (GND1) After 4WD LOW to 4WD HIGH switch is complete Below 1 Ω
          9 (L4) - 10 (GND) After 4WD LOW to 4WD HIGH switch is complete 10 kΩ or higher
          12 (B) - 10 (GND) After 4WD LOW to 4WD HIGH switch is complete Below 1 Ω

        If the result is not as specified, replace the transfer shift actuator assembly.

      4. Check the 4WD HIGH to 2WD switch.

        Connect lines via a relay as shown in the illustration, then check that the actuator fork moves from the 4WD HIGH to 2WD position.

        GTY929026Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        TEXT IN ILLUSTRATION

        *1 DEF Relay - -
        *a 4WD HIGH to 2WD *b Component without harness connected
        (Transfer Shift Actuator Assembly)
        1. After the 4WD HIGH to 2WD switch is complete, inspect the 4WD detection switch, L4 detection switch and limit switch.

          Standard Resistance

          Tester Connection Switch Condition Specified Condition
          3 (TL1) - 6 (GND1) After 4WD HIGH to 2WD switch is complete Below 1 Ω
          4 (TL2) - 6 (GND1) After 4WD HIGH to 2WD switch is complete 10 kΩ or higher
          5 (TL3) - 6 (GND1) After 4WD HIGH to 2WD switch is complete 10 kΩ or higher
          9 (L4) - 10 (GND) After 4WD HIGH to 2WD switch is complete 10 kΩ or higher
          12 (B) - 10 (GND) After 4WD HIGH to 2WD switch is complete 10 kΩ or higher

        If the result is not as specified, replace the transfer shift actuator assembly.

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