22 · Diagnostics

Dipped headlamps not working

Make: Fiat
Model: Doblò Factory Service Manual
Year: 2000–2010
Section: Lights › Dipped headlamps not working

‹ Prev Side lights/no. plate lights not working Next › Main beam headlamps not working

Fault diagnosisDipped headlamps not working

DIPPED HEADLAMPS NOT WORKING

When the steering column switch unit ring nut is operated with the ignition ON, the dipped headlamps do not work

1	CHECK INDIVIDUAL LIGHTS	All OK	Problems met	Operation
		Results of the tests
	Check the condition of individual bulbs and light units.	Continue to Step 2	Left bulb damaged	Replace the bulb Op. 5540B22
			Right bulb damaged	Replace the bulb Op. 5540B22
			Light unit faulty	Repair or change the front light unit Op. 5540B79
2	DIPPED HEADLAMPS ELECTRICAL CIRCUIT CHECK	All OK	Problems met	Operation
	Check, in order: right and left dipped headlamp fuses; dipped headlamp maintenance relay; connections between steering column switch unit-Body Computer and junction unit; connections between junction unit and bulbs bulb earth See E2011 DIPPED HEADLAMPS	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 broken	Restore connections See E2011 DIPPED HEADLAMPS
3	STEERING COLUMN SWITCH UNIT CHECK	All OK	Problems met	Operation
	Check that the stalk unit is working properly; in particular check the side lights switch Characteristic of working principle 5550A stalk unit	Continue to Step 4	Steering column switch unit not working properly	Replace the steering column switch unit Op. 5550A12
4	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: See E2011 DIPPED HEADLAMPS	Continue to Step 5	Body Computer supply incorrect	Restore the correct supply See E2011 DIPPED HEADLAMPS
		Continue to Step 5	Body Computer faulty	Replace the Body Computer Op. 5505A32
5	CHECK ON CORRECT OPERATION	All OK	Problems met	Operation
	Check that the fault is no longer present		Fault persists	Search for the fault starting from another symptom'

‹ Prev Side lights/no. plate lights not working Next › Main beam headlamps not working

Parts & tools for this job For 2000 Fiat Doblò

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