Tundra Regular Cab SR5 4WD V8-4.7L (2UZ-FE) (2000)
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5. INSPECT ACTUATOR OPERATION
a. 2WD -> 4HI shift: Connect lines via a relay as shown in the illustration, then check that the actuator fork shaft moves to 2WD -> 4HI position.
b. 4HI -> 2WD shift: Connect lines via a relay as shown in the illustration, then check that the actuator fork. shaft moves to 4HI -> 2WD position.