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3-4 [T200]
AWD SYSTEM
Symptom and possible cause
Remedy
Noises when cornering
" Damaged differential gear .
Replace .
" Excessive wear or damage of thrust washer.
Replace .
" Broken pinion mate shaft .
Replace .
" Seized or damaged side bearing .
Replace .
Gear noises
Since noises from engine, muffler, transmission, propeller shaft, wheel bearings, tires, and body are sometimes mistaken for noises from
differential AS.SY, be careful in checking them . Inspection methods to locate noises include coasting, accelerating, cruising, and jacking
up all four wheels . Perform these inspections according to condition of trouble . When listening to noises, shift gears into four wheel drive
and fourth speed position, trying to pick up only differential noise .
" Improper tooth contact of hypoid gear.
Readjust or replace hypoid gear set.
" Improper backlash for hypoid gear .
Readjust .
" Scored or chipped teeth of hypoid gear.
Replace hypoid gear set .
" Seized hypoid gear .
Replace hypoid gear set .
" Improper preload for front or rear bearings .
Readjust.
" Seized, scored, or chipped front or rear bearing .
Replace .
" Seized, scored, or chipped side bearing .
Replace .
" Vibrating differential carrier .
Replace .
2. Propeller Shaft
Trouble and possible cause
Remedy
Vibration of propeller shaft
Vibration is caused by propeller shaft during operation and is transferred to vehicle body . Generally vibration increase in proportion to
vehicle speed .
" Worn or damaged universal joint/ DOJ
Replace .
" Unbalanced propeller shaft due to bend or dent.
Replace .
" Loose installation of propeller shaft .
Retighten .
" Worn or damaged center bearing and damaged center mounting
rubber .
Replace .
Tapping when starting and noise while cruising, caused by propeller shaft.
" Worn or damaged universal joint/ DOJ.
Replace .
" Worn spline of sleeve yoke .
Replace .
" Loose installation of propeller shaft .
Retighten.
" Loose installation of joint.
Replace .
" Worn or damaged center bearing and damaged center mounting
rubber .
Replace .
Vibration while cruising may be caused by an unbalanced tire, improper tire inflation pressure, improper wheel
alignment, etc.
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Troubleshooting
