|  |  | Results of the tests | 
| 1 | CHECKING WITH DIAGNOSTIC EQUIPMENT | All OK | Problems met | Operation | 
|---|
|  | Connect
the Examiner diagnostic equipment and check, in the Instrument Panel
Node ambient, that there are no errors and the following parameters are
present. | Continue to Step 7 | Impossible to connect
with the instrument panel node control unit | Continue to Step  2 | 
| There are errors | Continue to Step  5 | 
| 2 | ELECTRICAL POWER SUPPLY CHECK | All OK | Problems met | Operation | 
|---|
|  | Check
that the Instrument Panel Node electrical power supply is correct  See   E4010  INSTRUMENT PANEL | Continue to Step 3 | Positive and/or earth
electrical power supply faulty | Replace the component involved (if a fuse is involved,
search for the cause of the problem) | 
| 3 | CHECK ELECTRICAL CONNECTIONS | All OK | Problems met | Operation | 
|---|
|  | Check
the electrical connections for the Instrument Panel Node, in particular
making sure that each individual pin is correctly connected and inserted
in its housing | Continue to Step 4 | Electrical connections
to the instrument panel node not working | Restore damaged electrical
connections | 
| 4 | CHECKING WITH DIAGNOSTIC EQUIPMENT | All OK | Problems met | Operation | 
|---|
|  | Using
the Examiner, check the possibility of connecting with the Instrument
Panel Node | Continue to Step 1 | Impossible to connect
with the control unit | Replace the Instrument Panel Node  Op. 5560B11 | 
| 5 | ERRORS CHECK | All OK | Problems met | Operation | 
|---|
|  | With
the Examiner in Instrument Panel Node ambient, check that the specific
error is not present | Continue to Step 7 | Error detected inside
the instrument panel node control unit | Continue to Step  6 | 
| 6 | CHECK WITH ACTIVE DIAGNOSIS | All OK | Problems met | Operation | 
|---|
|  | With
the Examiner in the Instrument Panel Node ambient, check, in Active
Diagnosis, that the function in question is correctly activated | Continue to Step 7 | The component in question
is not activated | Replace the Instrument Panel Node control unit  Op. 5560B11 | 
| 7 | CHECK ON CORRECT OPERATION | All OK | Problems met | Operation | 
|---|
|  | Check
that the fault is no longer present | End of diagnosis | Fault persists | Continue as described in
the Table  See table   H25  NO ELECTRIC STEERING POWER ASSISTANCE WITH FAILURE WARNING LIGHT NOT ON |