| 1 | WIRING CONTINUITY CHECK | ALL OK | PROBLEMS ENCOUNTERED | ACTION |
|---|
| Check the continuity of the cable for the speed signal between the body computer and the 14-way connector on the master headlamp (left side) See E2011 DIPPED HEADLAMPS | Move on to Step 2 | 1.Connector not correctly inserted | 1.Restore the connection |
| 2.Wiring between body computer and master headlamp faulty | 2.Restore or, if necessary, replace the wiring |
| 2 | SPEED SIGNAL CHECK | ALL OK | PROBLEMS ENCOUNTERED | ACTION |
|---|
| Check the presence of the speed signal at the 14-way connector for the master headlamp by carrying out the test See Test 5540BN SPEED SIGNAL CHECK | Move on to Step 3 | | |
| 3 | HEADLAMP INTERNAL WIRING CHECK | ALL OK | PROBLEMS ENCOUNTERED | ACTION |
|---|
| Check the continuity of the wiring between the 14-way connector for the master headlamp and the control unit side connector by carrying out the test, then move on to Step 4 | Move on to Step 4 | | |
| 4 | CHECK ON CORRECT OPERATION | ALL OK | PROBLEMS ENCOUNTERED | ACTION |
|---|
| Check the fault has disappeared | End of diagnosis | The fault persists | Refit the headlamp removed previously and replace the master control unit Op. 5540B42 CONTROL UNIT OF ONE GAS DISCHARGE LIGHT CLUSTER R R |