| 1 | CHECK ON CONNECTOR AT HEADLAMP | ALL OK | PROBLEMS ENCOUNTERED | ACTION |
|---|
| Check that the 14-way connector on the master/slave lamp is correctly fitted | Move on to Step 2 | Connector not correctly fitted | Refit correctly See E2011 DIPPED HEADLAMPS |
| 2 | CHECK USING DIAGNOSTIC EQUIPMENT | ALL OK | PROBLEMS ENCOUNTERED | ACTION |
|---|
| Check that there are no errors by connecting to the Master (left side) or Slave (right side) headlamp using the diagnostic equipment | Move on to Step 3 | 1. Presence of error detectedB1010 - Xenon fails to come on | 1. Move on to Step 3 |
| 2. Presence of error detectedB1012 - Xenon voltage out of range | 2. Move on to Step 3 |
| 3. Presence of error detectedB1000 - control unit broken | 3. Replace ballast control unitOp. 5540B42 |
| 3 | DIPPED HEADLAMPS POWER SUPPLY CHECK | ALL OK | PROBLEMS ENCOUNTERED | ACTION |
|---|
| Check that the headlamps are receiving the correct power supply, by carrying out the See Test 5540BA DIPPED BEAM CIRCUIT CHECK | Move on to Step 4 | | |
| 4 | HEADLAMP INTERNAL WIRING CHECK | ALL OK | PROBLEMS ENCOUNTERED | ACTION |
|---|
| Check that the screened connector for the headlamp bulb is correctly fitted in the ballast control unit.Check that the screened connector for the bulb is correctly fitted in place.Check the continuity of the wiring between the 14-way connector for the headlamp and the connector connected to the ballast control unit, by carrying out the See Test 5540BK CHECK THE CONTINUITY OF THE LOW BEAM WIRING INSIDE THE HEADLAMP | Move on to Step 5 | 1. Screened connector not correctly fitted in the control unit | 1. Fit the connector correctly in the control unit See E2011 DIPPED HEADLAMPS |
| 2. Bulb connector not correctly fitted | 2. Fit the bulb connector correctly See E2011 DIPPED HEADLAMPS |
| 3. Connection broken | 3. Move on to Step 6 |
| 5 | CHECK ON OPERATION OF BULB | ALL OK | PROBLEMS ENCOUNTERED | ACTION |
|---|
| Check, that when the bulb is replaced Op. 5540B45 GAS DISCHARGE DIPPED/MAIN BEAM HEADLAMP BULB - R.R., the fault disappears | End of diagnosis | The fault persists | Refit the original bulb and move on to Step 6 |
| 6 | 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 and move on to step 7 |
| 7 | CHECK ON CORRECT OPERATION | ALL OK | PROBLEMS ENCOUNTERED | ACTION |
|---|
| Replace the faulty headlamp ballast control unitOp. 5540B42 | End of diagnosis | The fault persists | Contact technical service for further information on the problem |