Side lights/no. plate lights not working

Make: Alfa Romeo
Model: 147 Factory Service Manual
Year: 2000–2004
Section: Lights › Side lights/no. plate lights not working

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Fault diagnosisSide lights/no. plate lights not working

SIDE LIGHTS/NO. PLATE LIGHTS NOT WORKING

With the ignition key in the ON position, when the steering column switch unit ring nut is operated, the side lights or the number plate lights do not work and this fault is indicated by the light failure warning light.

1	CHECKING WITH DIAGNOSTIC EQUIPMENT	All OK	Problems met	Operation
		Results of the tests
	Connect the Examiner equipment to the diagnostic socket. Verify: that there are no faults in the Body Computer through the active diagnosis, the operation of the lights.	Continue to Step 3	Side lights error (open circuit or short circuit)	Check the operation of the individual lights: wiring diagram See E2010 SIDE LIGHTS / NO. PLATE LIGHTS Continue to Step 2
2	CHECKING INDIVIDUAL LIGHTS	All OK	Problems met	Operation
	Check the condition of the individual bulbs and the bulb holder assembly	Continue to Step 3	Bulbs damaged	Replace the bulbs
			Fault in right front light cluster	Repair or replace front light cluster Op. 5540B75
			Fault in left front light cluster	Repair or replace front light cluster Op. 5540B74
			Rear light cluster faulty	Repair or replace the rear light cluster Op. 5540A56
			No. plate lights faulty	Renew or replace the no. plate lights Op. 5540A94
3	SIDE LIGHTS ELECTRICAL CIRCUIT CHECK	All OK	Problems met	Operation
	Verify: connections between Body Computer and steering column switch unit; connections between ignition switch and Body Computer connections between Body Computer and bulbs bulb earths: See E2010 SIDE LIGHTS / NO. PLATE LIGHTS	Continue to Step 4	Connections broken	Restore connections See E2010 SIDE LIGHTS / NO. PLATE LIGHTS
4	CHECKING STEERING COLUMN SWITCH UNIT	All OK	Problems met	Operation
	Check that the steering column switch unit is working properly: in particular, the side lights switch: Characteristic of working principle 5550 MANOEUVRING AND WARNING SIGNALS	Continue to Step 5	Steering column switch unit not working properly	Replace the stalk unit Op. 5550A12
5	CHECK IGNITION SWITCH	All OK	Problems met	Operation
	Check that the side lights come on when the ignition key is turned in the opposite direction	Continue to Step 6	Ignition switch faulty	Renew or replace the ignition switch Op. 5520A12
6	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'

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Parts & tools for this job For 2000 Alfa Romeo 147

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