		Test results
1	ELECTRICAL SYSTEM CHECK	All OK	Problems encountered	Operation
	Check the condition of the protective fuse in the engine compartment junction unit See E2012 MAIN BEAM HEADLAMPS	Move on to Step 2	Fuse blown	Check the wiring insulation by continuing to step 3, then replace the fuse See E2012 MAIN BEAM HEADLAMPS
2	MAIN BEAM HEADLAMP BULB CONDITION CHECK	All OK	Problems encountered	Operation
	Check the condition of the main beam bulb	Move on to Step 3	Bulb blown	Replace the bulb Op. 5540B24 MAIN BEAM BULB (ONE) FOR ONE HEADLAMP/LIGHT CLUSTER LH OR RH - R.R
3	ELECTRICAL SYSTEM CHECK	All OK	Problems encountered	Operation
	Check the continuity and the insulation of the wiring between the front lamp and the Engine compartment junction unit See E2012 MAIN BEAM HEADLAMPS	Move on to Step 4	Interruption or no insulation for the electrical connection	Restore the electrical connection See E2012 MAIN BEAM HEADLAMPS
4	ELECTRICAL SYSTEM CHECK	All OK	Problems encountered	Operation
	Check the continuity and the insulation of the wiring between the outlet connector for the Engine compartment junction unit and the Protective fuse See E2012 MAIN BEAM HEADLAMPS	Move on to Step 5	Interruption or no insulation for the dashboard junction unit internal connection	Replace the engine compartment junction unit Op. 5505A28 CONTAINER FOR ADDITIONAL JUNCTION UNIT IN ENGINE COMPARTMENT - R.R.
5	LIGHT CLUSTER ELECTRICAL SYSTEM CHECK	All OK	Problems encountered	Operation
	Check the condition of the wiring inside the light cluster between the headlamp connector and the main beam bulb	End of diagnosis	Internal wires broken or not insulated	Restore the electrical connection, if necessary, replace the front light cluster Op. 5540B07 LEFT FRONT HEADLAMP - R.R. and/or Op. 5540B08 RIGHT FRONT HEADLAMP - R.R.

One of the two main beam headlamps is not working;

The main beam headlamps are controlled by the Body Computer Node via a relay located in the Engine Compartment Junction Unit.