Check alignment sensors
- Make
- Alfa Romeo
- Model
- Brera and Spider Factory Service Manual
- Year
- 2005–2010
- Section
- Exterior lighting › Check alignment sensors
CHECK ALIGNMENT SENSORS
| CHECK TO BE PERFORMED | RESOLUTION IF THE CHECK IS NOT OK | |
|---|---|---|
| 1 | With the ignition ON, check for the presence at Pin 5 of the headlamp alignment corrector front potentiometer connector See K001 HEADLAMP ALIGNMENT CORRECTOR FRONT POTENTIOMETER (CAF) of a voltage of 5 V. Move on to Step 5 | Move on to Step 2 |
| 2 | If faults are present, restore the continuity of the wiring between the Master headlamp (left side) and the front potentiometer See E3080 HEADLAMP AGLINMENT CORRECTOR The test can be considered over | Move on to Step 3 |
| 3 | With the key ON, check for the presence at Pin 1 of the Master headlamp of a voltage of 5 V | Replace the master headlamp |
| 4 | Check that the fault has disappeared. The test is complete | Replace the headlamp control unit Op. 5540B40 CONTROL UNIT IN LEFT GAS DISCHARGE LIGHT CLUSTER - R.R. |
| 5 | With the ignition ON, check for the presence at Pin 5 of the headlamp alignment corrector rear potentiometer connector See K002 HEADLAMP ALIGNMENT CORRECTOR REAR POTENTIOMETER (CAF) of a voltage of 5 V. Move on to Step 8 | Move on to Step 6 |
| 6 | If faults are present, restore the continuity of the wiring between the Master headlamp (left side) and the rear potentiometer See E3080 HEADLAMP AGLINMENT CORRECTOR The test can be considered over | Move on to Step 7 |
| 7 | With the key ON, check for the presence at Pin 4 of the headlamp of a voltage of 5 V. Move on to Step 4 | Replace the master headlamp |
| 8 | Check Pin 1 of the potentiometer connector See K001 HEADLAMP ALIGNMENT CORRECTOR FRONT POTENTIOMETER (CAF) for the presence of a negative signal. Move on to Step 11 | Move on to Step 9 |
| 9 | If faults are present, restore the continuity of the wiring between the Master headlamp (left side) and the front potentiometer See E3080 HEADLAMP AGLINMENT CORRECTOR The test can be considered over | Move on to Step 10 |
| 10 | With the key ON, check for the presence at Pin 4 of the headlamp of an earth signal. Move on to Step 4 | Replace the master headlamp |
| 11 | Check Pin 1 of the potentiometer connector See K002 HEADLAMP ALIGNMENT CORRECTOR REAR POTENTIOMETER (CAF) for the presence of a negative signal. Move on to Step 14 | Move on to Step 12 |
| 12 | If faults are present, restore the continuity of the wiring between the Master headlamp (left side) and the rear potentiometer See E3080 HEADLAMP AGLINMENT CORRECTOR The test can be considered over | Move on to Step 13 |
| 13 | With the key ON, check for the presence at Pin 6 of the headlamp of an earth signal. Move on to Step 4 | Replace the master headlamp |
| 14 | Turn the ignition key to the ON position. Disconnect the front sensor connecting rod. Connect a Voltmeter across Pin 2 of the headlamp 6-way connector and the earth. Check that the voltage varies from 0.5 to 4.5 when the sensor mobile axis is turned by hand. Move on to Step 16 | Move on to Step 15 |
| 15 | If faults are present, restore the continuity of the wiring between the Master headlamp (left side) and the front potentiometer See E3080 HEADLAMP AGLINMENT CORRECTOR The test can be considered over | Replace the sensor Op. 5540C42 SENSOR FOR CORRECTING/ALIGNING GAS DISCHARGE LIGHTING UNITS ON FRONT SUSPENSION - R R |
| 16 | Turn the ignition key to the ON position. Disconnect the rear sensor connecting rod. Connect a Voltmeter across Pin 5 of the headlamp 6-way connector and the earth. Check that the voltage varies from 0.5 to 4.5 when the sensor mobile axis is turned by hand. The test can be considered over | Move on to Step 17 |
| 17 | If faults are present, restore the continuity of the wiring between the Master headlamp (left side) and the rear potentiometer | Replace the sensor Op. 5540C46 SENSOR FOR CORRECTING/ALIGNING GAS DISCHARGE LIGHTING UNITS ON REAR SUSPENSION - R.R. |
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