		Test results
1	BULB CONDITION CHECK.	All OK	Problems encountered	Operation
	Check the continuity of the bulb filament	Move on to Step 2	Bulb inefficient	Replace the bulb Op. 5540B25 LOW BEAM BULB (ONE) FOR ONE HEADLAMP/LIGHT CLUSTER LH OR RH - R.R
2	ELECTRICAL SYSTEM CHECK.	All OK	Problems encountered	Operation
	Check the condition of the bulb protective fuse See E2011 DIPPED HEADLAMPS	Move on to Step 3	Fuse blown	Replace the fuse and search for the cause of the malfunction.
3	ELECTRICAL SYSTEM CHECK.	All OK	Problems encountered	Operation
	Check the continuity and the insulation of the wiring between the bulb and the Body Computer See E2011 DIPPED HEADLAMPS	Move on to Step 4	Electrical connection break or short circuit	Restore the correct electrical connection.
4	LAMP ELECTRICAL SYSTEM CHECK.	All OK	Problems encountered	Operation
	Check the condition of the internal headlamp connections between the connector and bulb holder	Move on to Step 5	Internal connections interrupted or lacking insulation.	Restore the electrical connection, replacing the lamp if necessary
5	BODY COMPUTER OPERATION CHECK	All OK	Problems encountered	Operation
	Check that the Body computer is working properly	End of diagnosis	Body Computer defective	Replace the body computer Op. 5505A35 MAIN BODY COMPUTER/JUNCTION UNIT - R.R.

APPLIES TO VERSIONS WITH: Gas discharge headlamps

		TEST RESULTS
1	HEADLAMP CONNECTOR CHECK	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check that the 14-way connector at the right/left headlamp is correctly fitted	Move on to Step 2	Connector not correctly fitted	Refit correctly See E2011 DIPPED HEADLAMPS
2	DIPPED HEADLAMPS POWER SUPPLY CHECK	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Turn the steering wheel interface lever to the dipped headlamps position and check that the voltage at the headlamps is correct See Test 5540BA DIPPED BEAM CIRCUIT CHECK	Move on to Step 4
3	CHECK ON OPERATION OF BULB	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check, that when the bulb is replaced, Op. 5540B45 GAS DISCHARGE LOW/MAIN BEAM HEADLAMP BULB - R.R. the fault disappears	End of diagnosis	The fault persists	Refit the original bulb.
4	CHECK ON CORRECT OPERATION OF HEADLAMP	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Replace the left headlamp Op. 5540B81 LEFT GAS DISCHARGE LIGHT CLUSTER - R.R. or right headlamp Op. 5540B82 RIGHT GAS DISCHARGE LIGHT CLUSTER - R.R. (the failed unit) and check it is working properly	End of diagnosis	The fault persists	Refit the headlamp replaced previously.
5	CORRECT OPERATION CHECK	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Replace the faulty headlamp ballast control unit Op. 5540B40 CONTROL UNIT IN LEFT GAS DISCHARGE LIGHT CLUSTER - R.R. Op. 5540B41 CONTROL UNIT IN RIGHT GAS DISCHARGE LIGHT CLUSTER - R.R.	End of diagnosis

Note: One of the two dipped headlamps is not working;