General Diagnostic Table: Inspection

NOTE: Vibration while cruising may be caused by an unbalanced tire, improper tire inflation pressure, improper wheel alignment, etc.

Symptoms	Possible cause	Corrective action
Noise or vibration from propeller shaft	Center bearing Runout of propeller shaft Loose or gap at connections	Inspect the propeller shaft. Ref. to DRIVE SHAFT SYSTEM>Propeller Shaft>INSPECTION .
Abnormal wheel vibration	Wheel is out of balance.	Check the wheel balance. Ref. to WHEEL AND TIRE SYSTEM>Tire and Wheel>INSPECTION>WHEEL BALANCING .
	Front wheel alignment	Check the front wheel alignment. Ref. to FRONT SUSPENSION>Wheel Alignment>INSPECTION .
	Rear wheel alignment	Check the rear wheel alignment. Ref. to REAR SUSPENSION>Wheel Alignment>INSPECTION .
	Front strut	Check the front strut. Ref. to FRONT SUSPENSION>Front Strut>INSPECTION .
	Rear shock absorber	Check the rear shock absorber. Ref. to REAR SUSPENSION>Rear Shock Absorber>INSPECTION .
	Front drive shaft	Check the front drive shaft. Ref. to DRIVE SHAFT SYSTEM>Front Drive Shaft>INSPECTION .
	Rear drive shaft	Check the rear drive shaft. Ref. to DRIVE SHAFT SYSTEM>Rear Drive Shaft>INSPECTION .
	Hub unit COMPL - front axle	Check the hub unit COMPL - front axle. Ref. to DRIVE SHAFT SYSTEM>Front Hub Unit Bearing>INSPECTION .
	Hub unit COMPL - rear axle	Check the hub unit COMPL - rear axle. Ref. to DRIVE SHAFT SYSTEM>Rear Hub Unit Bearing>INSPECTION .
Noise from the underbody	Wheel is out of balance.	Check the wheel balance. Ref. to WHEEL AND TIRE SYSTEM>Tire and Wheel>INSPECTION>WHEEL BALANCING .
	Front wheel alignment	Check the front wheel alignment. Ref. to FRONT SUSPENSION>Wheel Alignment>INSPECTION .
	Rear wheel alignment	Check the rear wheel alignment. Ref. to REAR SUSPENSION>Wheel Alignment>INSPECTION .
	Front strut	Check the front strut. Ref. to FRONT SUSPENSION>Front Strut>INSPECTION .
	Rear shock absorber	Check the rear shock absorber. Ref. to REAR SUSPENSION>Rear Shock Absorber>INSPECTION .