16 · Diagnostics

I06 High beams not working

Make: Alfa Romeo
Model: 156 Factory Service Manual
Year: 1997–2002
Section: Lights › I06 High beams not working

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Fault diagnosisI06 High beams not working

I06 High beams not working

With the dipped headlamps switched on (stable position) or in the flashing mode, when the steering column switch unit lever is operated, the main beam headlamps do not work.

Step	Test procedure	Result	Action
1	CHECK INDIVIDUAL LIGHTS Check the condition of individual bulbs and light units.	OK	Move onto step 2
		Bulbs damaged	Replace bulbs End of diagnosis
		Light unit faulty	Repair or change the front light unit Op. 5540B22 End of diagnosis
2	MAIN BEAM HEADLAMPS ELECTRICAL CIRCUIT CHECK Check, in order: left and right main beam headlamp fuses connections between steering column switch unit and junction unit connection between junction unit and bulbs bulb earth (Wiring diagram E2012 MAIN BEAM ).	OK	Move onto step 3
		Component defective	Replace the component involved (if a fuse is involved, search for the cause of the problem) End of diagnosis
		Connections broken	Restore the connections ( End of diagnosis
3	STEERING COLUMN SWITCH UNIT CHECK Check the stalk unit is working properly: in particular, check the side light switch see DESCRIPTION AND OPERATION: 5550A Stalk unit (see 5550AF)	OK	Move onto step 4
3		Stalk unit not working properly	Replace the steering column switch unit Op. 5550A12 End of diagnosis
4	CHECK CORRECT OPERATION Check that the fault is no longer present	OK	End of diagnosis
4		Fault persists	Incorrect selection of diagnostic procedure

‹ Prev I05 Dipped beams not working Next › I10 Direction indicators/hazard warning lights not working

Parts & tools for this job For 1997 Alfa Romeo 156

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