Dipped headlamps do not light up as they should

Make: Alfa Romeo
Model: 159 Factory Service Manual
Year: 2005–2011
Section: Lights › Dipped headlamps do not light up as they should

‹ Prev Flashing, switching off or variation in dipped headlamps brightness Next › Dipped headlamps lowerd and not moving

Fault diagnosisDipped headlamps do not light up as they should

DIPPED HEADLAMPS DO NOT LIGHT UP AS THEY SHOULD

Both the dipped headlamps do not light up at the correct distance but point upwards or downwards

1	CHECK ON INSTALLATION OF ALIGNMENT SENSORS	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check the condition of the front and rear alignment sensors and make sure they are correctly installed. Make sure that the fasteing of the bracket and the connecting rod is correct for both the front and rear sensors	Move on to Step 2	1. Mechanical installation of front sensor (brackets, connecting rods) incorrect	1. Refit front sensor correctly Op. 5540C42 SENSOR FOR CORRECTING/ALIGNING GAS DISCHARGE LIGHTING UNITS ON FRONT SUSPENSION - R R
		Move on to Step 2	2. Mechanical installation of rear sensor (brackets, connecting rods) incorrect	2. Refit rear sensor correctly Op. 5540C46 SENSOR FOR CORRECTING/ALIGNING GAS DISCHARGE LIGHTING UNITS ON REAR SUSPENSION - R.R.
2	CHECK USING DIAGNOSTIC EQUIPMENT	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check that there are no errors by connecting to the master headlamp (left side) control unit.	Move on to Step 3	1. Presence of error detected B1020 - Front sensor signal	1. Move on to Step 3
			2. Presence of error detected B1021 - Rear sensor signal	2. Move on to Step 3
			3. Presence of error detected B1022 - Sensor power supply	3. Move on to Step 3
			4. Presence of error detected B1040 - Headlamp alignment corrector	4. Move on to Step 5
3	CHECK ON ALIGNMENT SENSOR SUPPLY	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check that the attitude sensors are receiving a correct supply by carrying out the test See Test 5540CA HEADLAMP ALIGNMENT SENSOR CHECK	Move on to Step 4
4	CHECK ON CONNECTIONS INSIDE THE HEADLAMPS	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check that the connections inside the headlamps for the vertical adjustment motors are correctly connected See E3080 HEADLAMP AGLINMENT CORRECTOR	Move on to Step 5	1. Connector for right headlamp motor not correctly fitted	1. Fit connector for right headlamp
		Move on to Step 5	2. Connector for left headlamp motor not correctly fitted	2. Fit connector for left headlamp
5	CHECK ON OPERATION OF HEADLAMP ALIGNMENT ACTUATORS	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Replace the left headlamps Op. 5540B81 LEFT GAS DISCHARGE LIGHT CLUSTER - R.R. and right Op. 5540B82 RIGHT GAS DISCHARGE LIGHT CLUSTER - R.R. and check that the motors are working properly	End of diagnosis	1. Right headlamp alignment corrector not working	1. Move on to Step 6
		End of diagnosis	2. Left headlamp alignment corrector not working	2. Move on to Step 6
6	CHECK ON CORRECT OPERATION	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Refit the headlamp removed previously and replace the ballast control unit Op. 5540B42	End of diagnosis

‹ Prev Flashing, switching off or variation in dipped headlamps brightness Next › Dipped headlamps lowerd and not moving

Parts & tools for this job For 2005 Alfa Romeo 159

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