N20 HORNS NOT WORKING - Alfa - 156 - eLearn

When the sides of the steering wheel cover are pressed, the horns do not work.

1	HORNS CHECK	All OK	Problems met	Operation
		Results of the tests
	Check the operation of the horns.	Continue to Step 2	Horns faulty	Replace the horns Op. 5550B30
2	HORNS ELECTRICAL CIRCUIT CHECK	All OK	Problems met	Operation
	Check, in order: the horns fuse the horns relay the connection between the junction unit and the steering column switch unit the steering column switch unit earth the horns supply and earth See E3010 HORNS	Continue to Step 3	Component defective	Replace the component involved (if a fuse is involved, search for the cause of the problem)
		Continue to Step 3	Connections not correct	Restore connections
3	CLOCK SPRING CHECK	All OK	Problems met	Operation
	Check, in order: the operation of the clock spring: see DESCRIPTION AND OPERATION: 5580C air bag system the connections for the horn switches with the clock spring the connection of the steering column switch unit with the clock spring	Continue to Step 4	Clock spring faulty	Replace the clock spring Op. 5580C12
		Continue to Step 4	Connections not correct	Restore connections
4	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'

When the sides of the steering wheel cover are pressed, the horns do not work.

1	HORNS CHECK	All OK	Problems met	Operation
		Results of the tests
	Check the operation of the horns.	Continue to Step 2	Horns faulty	Replace the horns ( Op. 5550B30 )
2	HORNS ELECTRICAL CIRCUIT CHECK	All OK	Problems met	Operation
	Check, in order: the horns fuse the horns relay the connection between the junction unit and the steering column switch unit the steering column switch unit earth the horns supply and earth	Continue to Step 3	Component defective	Replace the damaged components (if a fuse is involved, search for the cause of the problem)
		Continue to Step 3	Connections not correct	Restore the correct connections
3	CLOCK SPRING CHECK	All OK	Problems met	Operation
	Check, in order: the operation of the clock spring ( Characteristic of working principle 5580C air bag system ): the connections for the horn switches with the clock spring - the connection for the steering column switch unit with the clock spring	Continue to Step 4	Clock spring faulty	Replace the clock spring ( Op. 5580C12 )
		Continue to Step 4	Connections not correct	Restore the correct connections
4	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'