| STEP | OPERATIONS TO BE CARRIED OUT | TEST RESULTS |
|---|
| 1 | INDIVIDUAL LIGHT CHECK | ALL OK | PROBLEMS ENCOUNTERED | ACTION |
|---|
| Check the condition of the bulbs and associated bulb holder; | Move on to Step | 1. Bulbs damaged | 1. Change the bulbs Op. 5540B25 DIPPED HEADLAMP BEAM (1), LH OR RH - R R |
| 2. Front light cluster fault | 2. Repair or replace the front light cluster Op. 5540B10 EXTERIOR LIGHT DIMMER RESISTOR - R+R |
| 2 | DIPPED HEADLAMP ELECTRICAL CIRCUIT CHECK | ALL OK | PROBLEMS ENCOUNTERED | ACTION |
|---|
| Check the following, in order:- Dipped headlamp fuses
- Bulb earth
| Move on to Step | 1. Component defective | 1. Replace defective component (in the case of a fuse, find out what caused it to blow). |
| 2. Connections interrupted | 2. Repair the connections See E2011 DIPPED HEADLAMPS |
| 3 | ENGINE BAY CONTROL UNIT CHECK | ALL OK | PROBLEMS ENCOUNTERED | ACTION |
|---|
| Check the following, in order:- Correct power supply to engine bay control unit;
- Check that battery output voltages are generated to control the bulbs when an earth signal is activated from the switch control unit to the engine bay control unit
| Move on to Step | 1. Connections interrupted | 1. Repair the connections See E2011 DIPPED HEADLAMPS |
| 2. Engine bay control unit fault | 2. Change engine bay control Op. 5505A13 SUPPLEMENTARY JUNCTION CONTROL UNIT IN ENGINE BAY - R R |
| 4 | CHECK ON CORRECT OPERATION | ALL OK | PROBLEMS ENCOUNTERED | ACTION |
|---|
| Check that the fault is no longer present | | | |