|  |  | Results of the tests | 
| 1 | CHECKING  WITH DIAGNOSTIC EQUIPMENT | All OK | Problems met | Operation | 
|---|
|  | Connect
an Examiner to the diagnostic socketCheck the operatio of the instrument panel light in NQS active
diagnosis. | Continue to Step 2 | Instrument panel does
not light up | Panel defective; Replace instrument panel  Op.   5560B11 | 
| 2 | CHECKING ELECTRICAL CIRCUIT | All OK | Problems met | Operation | 
|---|
|  | Check
the supplies for the instrument panel and its connection with the
Body Computer :  See   E2530  INSTRUMENT LIGHTING | Continue to Step 3 | Connections / supplies
not correct | Restore correct connections / supplies :  See   E2530  INSTRUMENT LIGHTING | 
| 3 | CHECK ON CORRECT OPERATION | All OK | Problems met | Operation | 
|---|
|  | Check
that the fault is no longer present |  | Fault persists | Replace the Body Computer   Op.   5505A32   Search
for the fault starting from another symptom' |