|  |  | Results of the tests | 
| 0 | PRELIMINARY CHECKS | All OK | Problems met | Operation | 
|---|
|  | With
the ignition on (during the initial check stage), check whether
one or more warning lights stay(s) on. | Continue to Step 
                              1 | One or more warning lights stay(s)
on. | Continue
to Step 
                               1 | 
| 1 | CHECKING POWER SUPPLY | All OK | Problems met | Operation | 
|---|
|  | Check
the supply relating to the symbol(s) concerned (
                               See   E4010  INSTRUMENT PANEL 
                              ). | Continue to Step 
                              2 | Wiring shorting to battery
positive or earth | Restore connections | 
| 2 | 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' |