18 · Diagnostics

I13 Lights not working

Fault diagnosisI13 Lights not working

When the door/s is/are opened (irrespective of whether the ignition is switched ON or OFF) the courtesy lights do not come on.

Step	Test procedure	Result	Action
1	CHECK INDIVIDUAL LIGHTS Check the condition of the individual bulbs	OK	Move onto step 2
1		Bulbs damaged	Replace bulbs Op. 7040E24 End of diagnosis
2	SWITCH CHECK Check the operation of the switches in the locks	OK	Move onto step 3
2		Switch faulty	Replace the lock Op. 7005N21 End of diagnosis
3	CHECKING COURTESY LIGHTS ELECTRICAL CIRCUIT Check, in order: DRIVER'S DOOR CONNECTOR CONTROL UNIT (services) supply fuse; connections between BODY COMPUTER control unit and door opening switches (locks) connections between NPG CONTROL UNIT AND BODY COMPUTER (LOW SPEED CAN) connections between DRIVER'S DOOR CONNECTOR CONTROL UNIT and courtesy light bulbs; bulb earths : Wiring diagram E2521 COURTESY LIGHTS	OK	Move onto step 4
		Fuse blown	Replace the fuse (and search for the cause of its blowing) End of diagnosis
		Connections broken	Restore the connections : Wiring diagram E2521 COURTESY LIGHTS End of diagnosis
		Bulb earth faulty	Restore the earth contact : Wiring diagram E2521 COURTESY LIGHTS End of diagnosis
4	CORRECT OPERATION CHECK Check that the fault is no longer present	OK	Incorrect selection of diagnostic procedure
4		Fault persists	Incorrect selection of diagnostic procedure

Parts & tools for this job For 2000 Alfa Romeo 147

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