Right/left dipped headlamp (one) not working

Make: Lancia
Model: Thesis Factory Service Manual
Year: 2002–2009
Section: Lights › Right/left dipped headlamp (one) not working

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Fault diagnosisRight/left dipped headlamp (one) not working

RIGHT/LEFT DIPPED HEADLAMP (ONE) NOT WORKING

One of the two dipped headlamps is not working;

The dipped headlamps are controlled by the Body Computer Node via a relay located in the Dashboard Junction Unit.

STEP	OPERATIONS TO BE CARRIED OUT	TEST RESULTS
1	ELECTRICAL SYSTEM CHECK.	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check the condition of the fuse for the light power circuit in the Dashboard Junction Unit (Wiring Diagram ) E2011 DIPPED BEAMS	Move on to Step	Fuse blown	Replace the fuse (Wiring Diagram ) E2011 DIPPED BEAMS
2	XENON BULB CONDITION CHECK	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Extract the light from its housing dismantling it and checking the condition of the xenon bulb	Move on to Step	Bulb burnt out	Replace the bulb
3	LAMP ELECTRICAL SYSTEM CHECK	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check the condition of the cables inside the lamp between the connector and the module for the xenon bulb.	Move on to Step	interruption or no insulation for the internal cables.	Restore the electrical connection, if necessary, replace the lamp (Wiring Diagram ) E2011 DIPPED BEAMS
4	ELECTRICAL SYSTEM CHECK.	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check the continuity and the insulation of the wiring between the headlamps and the earth (Wiring Diagram ) E2011 DIPPED BEAMS	Move on to Step	Interruption or no insulation for the electrical connection	Restore the electrical connection (Wiring Diagram ) E2011 DIPPED BEAMS
5	ELECTRICAL SYSTEM CHECK.	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check the continuity and the insulation of the wiring between the front headlamp and the Dashboard Junction Unit (Wiring Diagram ) E2011 DIPPED BEAMS	Move on to Step	Interruption or no insulation for the electrical connection	Restore the electrical connection (Wiring Diagram ) E2011 DIPPED BEAMS
6	ELECTRICAL SYSTEM CHECK.	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check the continuity and the insulation of the internal wiring between the outlet connector for the Dashboard Junction Unit and the Fuse for the power circuit (Wiring Diagram ) E2011 DIPPED BEAMS	Move on to Step	Interruption or no insulation for the Dashboard Junction Unit internal connection	Replace Dashboard Junction Unit See in Op. 5505A10 Junction UNIT - R.R.
7	CHECK ON CORRECT OPERATION	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check that the fault is no longer present		Fault persists.	Replace xenon bulb electronic module

‹ Prev Main beam headlamps not working Next › Side lights not working

Parts & tools for this job For 2002 Lancia Thesis

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