Motor Shift Control System: Inspection

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

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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

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1. Check that continuity exists between each terminal, as shown in the chart.
   SPECIFIED CONDITION
   
   

   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,

   Fig 3: Identifying Center Diff. Lock Control Relay Connector

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

Fig 4: Relay Specified Condition Chart

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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.
3. Check that the front propeller shaft can be rotated by hand.

Fig 5: Inspecting Actuator Operation

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HINT:

When inspecting the operation described above, use a heater main relay.