22 · Diagnostics

Dipped headlamps not working

Make: Fiat
Model: Stilo Factory Service Manual
Year: 2001–2007
Section: Lights › Dipped headlamps not working

‹ Prev Side lights / number plate light and dipped beams do not work in auto mode Next › Main beam headlamps not working

Fault diagnosisDipped headlamps not working

DIPPED HEADLAMPS NOT WORKING

Neither of the dipped beams work under any circumstances (either in manual or AUTO mode). When the appropriate lever on the stalk unit is raised or lowered with the key ON, or the appropriate button is pressed, the turn signals/hazard lights work but the intermittent operation is irregular.

Dipped beams are controlled by the Body Computer Node via a relay on the Facia Control Unit.

Lights can be turned on/off by means of the following controls:

Specific control (Exterior lighting control)
Control from dusk sensor
Follow me home control
Dipped beam maintenance control when main beams on

1	CHECK WITH DIAGNOSTIC EQUIPMENT	All OK	Problems met	Operation
		Results of the tests
	Connect an Examiner to the tester input and check the body computer node for: anomalies	Continue to Step 2	Anomalies present	Continue as instructed by the tester
2	CHECK WITH DIAGNOSTIC EQUIPMENT	All OK	Problems met	Operation
	Keep the tester connected and check the body computer node for: relay operation via active diagnosis	Continue to Step 5	relay is not active	Continue to Step 3
3	CHECK DIPPED BEAM RELAY	All OK	Problems met	Operation
	Check the condition of the dipped beam relay	Continue to Step 4	Relay defective	Change relay
4	CHECKING ELECTRICAL SYSTEM INSIDE FACIA CONTROL UNIT (control circuit)	All OK	Problems met	Operation
	Check continuity of electrical headlamp control circuit connections inside facia control unit See E2010 SIDE LIGHTS / NO. PLATE LIGHTS	Continue to Step 5	Connection o.c. in facia control unit	Change facia control unit Op. 5505A10
5	CHECKING ELECTRICAL SYSTEM INSIDE FACIA CONTROL UNIT (power circuit)	All OK	Problems met	Operation
	Check continuity of electrical dipped beam headlamp control circuit connections inside facia control unit See E2011 DIPPED HEADLAMPS Check continuity of relay power contacts	Continue to Step 6	Connection o.c. in facia control unit	Change facia control unit Op. 5505A10
		Continue to Step 6	Defective relay	Change relay
6	CHECKING CORRECT OPERATION	All OK	Problems met	Operation
	Check that the fault is no longer present		Fault persists	Replace the Body Computer Op. 5505A32 Search for the fault starting from another symptom'

‹ Prev Side lights / number plate light and dipped beams do not work in auto mode Next › Main beam headlamps not working

Parts & tools for this job For 2001 Fiat Stilo

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