22 · Diagnostics

Main beam headlamps not working

Make: Lancia
Model: Ypsilon Factory Service Manual
Year: 2003–2011
Section: Lights › Main beam headlamps not working

‹ Prev Dipped headlamps not working Next › Dipped beam (one) rh or lh not working/

Fault diagnosisMain beam headlamps not working

MAIN BEAM HEADLAMPS NOT WORKING

With the dipped headlamps switched on (stable position) or in the flashing mode, when the stalk unit ring nut is operated, the main beam headlamps do not work

1	CHECKING WITH DIAGNOSTIC EQUIPMENT	All OK	Problems met	Operation
		Results of the tests
	Connect the Examiner to the diagnostic socket Check: that there are no faults in the Body Computer the operation of the lights in active diagnosis.	Continue to Step 3	Error - (main beam headlamps relay)	Check - main beam headlamps relay/main beam headlamps electrical circuit. Continue to Step 3
		Continue to Step 3	Lights not activated	Check the individual lights. Continue to Step 2
2	CHECK ON INDIVIDUAL LIGHTS	All OK	Problems met	Operation
	Check the condition of individual bulbs and light units.	Continue to Step 3	Bulbs damaged	Replace bulbs
			Bulbs damaged	Repair or replace front lights cluster
			Bulbs damaged	Repair or replace front lights cluster
3	MAIN BEAM HEADLAMPS ELECTRICAL CIRCUIT CHECK	All OK	Problems met	Operation
	Check, in order: left and right main beam headlamp fuses main beam headlamps relay; connection between steering column switch unit and Body Computer; connection between Body Computer and engine compartment control unit; connections between engine bay control unit and bulbs; bulb earth: See E2012 MAIN BEAM HEADLAMPS	Continue to Step 4	Blown fuses	Replace the fuses, then search for the cause of the problem
			Connections not correct	Restore the connections: See E2012 MAIN BEAM HEADLAMPS
			Lamps earth defective	Restore the earth to the bulbs: See E2012 MAIN BEAM HEADLAMPS
4	CHECK ON STEERING COLUMN SWITCH UNIT	All OK	Problems met	Operation
	Check that the steering column switch unit is working properly: See E2012 MAIN BEAM HEADLAMPS	Continue to Step 5	Stalk unit faulty	Replace the stalk unit
5	CHECK ON BODY COMPUTER	All OK	Problems met	Operation
	Check that the Body Computer is supplied properly Check that when an earth signal from stalk unit to Body is activated, an earth signal is emitted from the Body to drive the dipped beam headlamps relay	Continue to Step 6	Incorrect supply	Restore the supply: See E2012 MAIN BEAM HEADLAMPS
		Continue to Step 6	Body Computer defective	Replace the Body Computer
6	CHECK ON CORRECT OPERATION	All OK	Problems met	Operation
	Check that the fault is no longer present	End of diagnosis

‹ Prev Dipped headlamps not working Next › Dipped beam (one) rh or lh not working/

Parts & tools for this job For 2003 Lancia Ypsilon

Links open Amazon search results in a new tab. As an Amazon Associate I earn from qualifying purchases.