		TEST RESULTS
1	CHECK ON INSTALLATION OF ALIGNMENT SENSORS	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check the condition of the front alignment sensor and make sure it is correctly fitted Make sure that the bracket and connecting rod are correctly fastened for the front sensor	Move on to Step 2	Mechanical installation of front sensor (brackets, connecting rod) not correct	Refit the front sensor correctly.
2	CHECK USING DIAGNOSTIC EQUIPMENT	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check that there are no errors by connecting to the left or right headlamp control unit	Move on to Step 3	1. Presence of error detected B1020 - Front sensor 2. Presence of error detected B1021 - Rear sensor 3. Presence of error detected B1040 - Headlamp alignment corrector	1.Move on to step 3 2. Move on to Step 3 3. Move on to Step 4
3	ALIGNMENT SENSORS POWER SUPPLY CHECK	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check that the power supply for the front alignment sensor is correct See Test 5540BB HEADLAMP ALIGNMENT SENSOR CHECK	End of diagnosis	The fault persists	Move on to Step 4
4	HEADLAMP ALIGNMENT ACTUATORS OPERATION CHECK	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Replace the headlamp that is not working properly and check that the alignment correction is working properly.	End of diagnosis	Alignment corrector not working	Move on to Step 5
5	CORRECT OPERATION CHECK	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Refit the headlamp replaced previously and replace the ballast control unit See Test 5540B40 CONTROL UNIT IN LEFT GAS DISCHARGE LIGHT CLUSTER - R.R. See Test 5540B41 CONTROL UNIT IN RIGHT GAS DISCHARGE LIGHT CLUSTER - R.R.	End of diagnosis

APPLIES TO VERSIONS WITH: Gas discharge headlamps

Both dipped headlamps move but do not light the correct distance (they point downwards)