|  |  | Results of the tests | 
| 1 | CHECK INSTRUMENT PANEL BRIGHTNESS
ADJUSTER | All
OK | Problems
met | Operation | 
|---|
|  | With
the ignition and side lights on, check that the instrument panel
brightness adjuster is positioned correctly (
                               See   E2530  INSTRUMENT LIGHTING 
                              ) | Continue to Step 
                              2 | Dimmer faulty | Replace brightness adjuster 
                               Op.   5560B12 | 
| Connections not correct | Restore connections | 
| 2 | CHECKING POWER SUPPLY | All OK | Problems met | Operation | 
|---|
|  | With
the ignition and side lights on, check the positive supply and earth
connection of the instrument panel rear light bulbs (
                               See   E2530  INSTRUMENT LIGHTING 
                              ) | Continue to Step 
                              3 | Incorrect supply | Restore connections | 
| Bulbs faulty | Replace instrument panel rear light bulbs 
                               Op.   5560B06 | 
| 3 | HECK ON CORRECT OPERATION | All OK | Problems met | Operation | 
|---|
|  | Check
that the fault is no longer present | End of diagnosis | Fault persists | Search for the
fault starting from another symptom' |