H20 STEERING WHEEL OSCILLATIONS/ VIBRATIONS / WHILST DRIVING - Fiat - MULTIPLA - eLearn

2888366 - H20 STEERING WHEEL OSCILLATIONS/ VIBRATIONS / WHILST DRIVING

The steering oscillates rapidly along a straight road at sustained speed. The effect increases as speed rises.

0	PRELIMINARY CHECKS	All OK	Problems met	Operation
		Results of the tests
	Preliminarily, check the type, condition and inflation pressure of the tyresCheck that the wheels are correctly fixed	Continue to Step 1	Tyre inflation pressure not correct	Restore the tyre inflation pressures
			Tyres not suitable or worn	Replace the tyres
			Wheel fixing not correct	Tighten the wheels correctly Op. 4450B14
1	WHEEL CHECK	All OK	Problems met	Operation
	Check: that the wheels are properly balanced the condition of the wheel rims (there should not be dents or distortions)	Continue to Step 2	Wheels not balanced	Balance the wheels Op. 4450B41
		Continue to Step 2	Wheel rims dented or distorted	Replace the rims (see Assembly 4450B)
2	WHEEL ALIGNMENT CHECK	All OK	Problems met	Operation
	Check rear wheel alignment	Continue to Step 3	Alignment not correct	Restore correct alignment Op. 4450A90
3	ENGINE SUPPORT CHECK	All OK	Problems met	Operation
	Check the condition and the centering of the engine supports and the reaction rod	Continue to Step 4	Engine supports faulty	Bed in the fixings: loosen the bolts, centre them in their housings and tighten them to the recommended torque (see Assembly 1008A)
		Continue to Step 4	Reaction rod faulty	Bed in the fixings: loosen the bolts, centre them in their housings and tighten them to the recommended torque (see Assembly 1008C)
4	BUSHES AND FLEXIBLE MOUNTINGS CHECK	All OK	Problems met	Operation
	Check that there are no accidental blows or damage to: steering box rods wishbone flexible mounts anti-roll bar flexible mountings	Continue to Step 5	Steering box rods worn or damaged	Replace the links Op. 4110B10
			Arm supports worn or damaged	Replace the mounts Op. 4410B40
			Anti-roll bar mountings worn or damaged	Replace the mountings Op. 4410C10
5	CHECK FRONT SPRING/SHOCK ABSORBER ASSEMBLY	All OK	Problems met	Operation
	Check: condition and efficiency of the front spring/damper unit the fixings for the spring/shock absorber assembly	Continue to Step 6	Tightening not correct	Restore the correct fixing
			Shock absorbers not working properly	Replace the shock absorber involved Op. 4410A12
			Springs not working properly	Replace the spring involved Op. 4410A12
6	STEERING COLUMN BEARINGS CHECK	All OK	Problems met	Operation
	Check the condition and efficiency of the steering column support bearings	Continue to Step 7	Bearings worn or damaged	Restore the efficiency of the steering column.If necessary, replace the bearings involved Op. 4110A31
7	CHECKING CORRECT OPERATION	All OK	Problems met	Operation
	Check that the fault is no longer present	End of diagnosis	Fault persists	Search for the fault starting from another symptom'