LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lexus >> 2002 >> LX 470 >> Repair and Diagnosis >> Transmission >> Transfer Case >> Transfer Case System >> Motor Shift Control System >> Inspection
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Motor Shift Control System: Inspection

  1. INSPECT SWITCH POSITION 
    1. Start the engine, and shift the transfer shift lever to the "H" position.
    2. Check that the center diff. indicator light comes on when the switch is in "ON" position. Check that the light goes off when the switch is in "OFF" position.
      Fig 1: Inspecting Switch Position
      G03322392Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. INSPECT SHIFT LEVER POSITION 
    1. Start the engine, and turn the center diff. lock switch to OFF.
    2. Check that the center diff. indicator light comes on when the transfer shift lever is shifted to the "L" position. Check that the light goes off when the lever is shifted to the "N" or "H" position.
      Fig 2: Inspecting Shift Lever Position
      G03322393Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. INSPECT CENTER DIFF. LOCK CONTROL RELAY 
      Fig 3: Identifying Center Diff Lock Control Relay
      G03322394Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Check that continuity exists between each terminal, as shown in the chart.
      CONTINUITY EXISTS TERMINAL CHART

      Tester connected terminal number Specified condition
      1 - 2 Continuity
      2 - 4 Continuity
      6 - 7 (1)
      (1) There is a diode between the terminals 6 and 7.

      If no continuity exists, check that continuity exists when changing the position of (+) probe for the position of negative (-) probe of tester.

    2. Apply battery positive voltage between each terminal and check that continuity exists between each terminal, as shown in the chart.
      CONTINUITY EXISTS TERMINAL CHART

      Battery voltage applied terminal Tester connected terminal number Specified condition
      6 (+) - 5 (-) 1 - 3
      1 - 2      		 Continuity
      No continuity
      7 (+) - 2 (-) 9 - 10 No continuity
      9 (+) - 10 (-) 3 - 4
      2 - 4      		 Continuity
      No continuity

      If continuity is not as specified, replace the relay.

  4. INSPECT ACTUATOR OPERATION 
    1. Raise up the front wheels, place the stopper under the rear wheels to block them, and pull up the parking brake.
    2. Disconnect the connector of the actuator and connect it to the relay using wire.
      Fig 4: Identifying Actuator Relay Wire Connection
      G03322395Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Check that the front propeller shaft can be rotated by hand.
      INSPECTION CHART

      Inspection Item Standard
      Center Diff.
      Free --> Lock      		 Front propeller shaft cannot be rotated.
      Center Diff.
      Lock --> Free      		 Front propeller shaft can be rotated.
      NOTE: When inspecting the operation described above, use a heater main relay.
      CAUTION: Connect the terminals being careful not to touch the neighboring terminals or metallic parts of relay housing.
      Fig 5: Identifying Heater Main Relay Terminals
      G03322396Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  5. INSPECT MOTOR ACTUATOR (MOTOR) 
    1. Remove the motor actuator (See DISASSEMBLY ).
      Fig 6: Identifying Motor Actuator Terminals
      G03322397Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance between the terminals 1 and 5.

      Standard resistance: 0.3 - 100 Ω 

    3. Measure the resistance between the terminals 1 or 5 and body ground.

      Standard resistance: More than 0.5 MΩ 

      If the resistance value is not as specified, replace the motor actuator.

  6. INSPECT CENTER DIFF. LOCK SWITCH CONTINUITY 
    1. Remove the center diff. lock switch (See DISASSEMBLY ).
    2. Inspect the continuity between each terminal.
      Fig 7: Inspecting Center Diff Lock Switch Continuity
      G03322398Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      CONTINUITY SPECIFICATION

      Center diff. lock switch condition Tester connected terminal number Specified condition
      ON 1 - 2
      1 - 3
      2 - 3      		 No continuity
      No continuity
      Continuity
      OFF 1 - 2
      1 - 3
      2 - 3      		 Continuity
      No continuity
      No continuity
  7. INSPECT TRANSFER INDICATOR SWITCH CONTINUITY 
    1. Remove the 3 transfer indicator switches (See DISASSEMBLY ).
    2. Check that continuity exists between terminals 1 and 2 when pushing the ball at the tip of the switch.
      Fig 8: Checking Continuity Exists Between Terminals 1 And 2
      G03322399Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
scientia non olet · About LEMON Manuals