I80 Headlight aiming device not working

Fault diagnosisI80 Headlight aiming device not working

When the knob on the dashboard is operated, with the dipped beam headlamps on, the headlamp adjustment function does not work.

Step	Test procedure	Result	Action
0	PRELIMINARY CHECKS Check the operation of the dipped beam headlamps	OK	Move onto step 1
0		The dipped beam headlamps do not work	Move onto step (see I05)
1	CHECK HEADLAMP ADJUSTMENT MOTOR Check that the headlamp adjustment motor is working properly	OK	Move onto step 2
1		Motor damaged	Replace headlamp adjustment motor Op. 5540C24 End of diagnosis
2	CHECK HEADLAMP ADJUSTMENT CONTROL Check that the headlamp adjuster is working (Wiring diagram E3080 HEADLAMP GEOMETRY ADJUSTMENT ).	OK	Move onto step 3
2		Headlamp adjuster faulty	Repair or replace the headlamp adjuster Op. 5540C18 End of diagnosis
3	CHECK HEADLAMP ADJUSTER ELECTRICAL CIRCUIT Check, in order: connection between junction unit and headlamp adjuster control connection between junction unit and headlamp adjustment motor earths for headlamp adjustment motors and headlamp adjuster control (Wiring diagram E3080 HEADLAMP GEOMETRY ADJUSTMENT ).	OK	Move onto step 4
3		Connections broken	Restore the connections 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

Parts & tools for this job For 1997 Alfa Romeo 156

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