| | Test results |
| 1 | CHECK USING DIAGNOSTIC EQUIPMENT | All OK | Problems encountered | Operation |
|---|
| Connect the Examiner diagnostic equipment and check, in Instrument Panel Node mode, that there are no errors and that the parameters are present | End of diagnosis | 1. Impossible to connect to the NQS control unit2. Presence of errors | 1. Move on to Step 22. Move on to Step 5 |
| 2 | ELECTRICAL POWER SUPPLY CHECK | All OK | Problems encountered | Operation |
|---|
| Check that the electrical power supply for the "Instrument Panel Node" is correct see Wiring Diagram See E4010 INSTRUMENT PANEL | Move on to Step 3 | Fault in electrical supply positive and/or earth | Replace defective component (in the case of a fuse, find out what caused it to blow) |
| 3 | ELECTRICAL CONNECTIONS CHECK | All OK | Problems encountered | Operation |
|---|
| Check the Instrument Panel Node electrical connections, particular that each pin is correctly connected and inserted | Move on to Step 4 | NQS electrical connections not operational | Renew the damaged electrical connections |
| 4 | CHECK USING DIAGNOSTIC EQUIPMENT | All OK | Problems encountered | Operation |
|---|
| Use an Examiner to check the possibility of connection to the Instrument Panel Node | Move on to Step 5 | Impossible to connect with the control unit | Replace the Instrument Panel Node Op. 5560B10 CONTROL PANEL - R+R |
| 5 | ERROR CHECK | All OK | Problems encountered | Operation |
|---|
| Check for the absence of the specific error with the Examiner in Instrument Panel Mode | Move on to Step 7 | Internal NQS control unit error detected | Move on to Step 6 |
| 6 | ACTIVE DIAGNOSIS CHECK | All OK | Problems encountered | Operation |
|---|
| With the Examiner in Instrument Panel Node mode check that the Electric Steering warning light is correctly activated in Active Diagnosis | Move on to Step 7 | The warning light is not activated | Replace the Instrument Panel Node Op. 5560B10 CONTROL PANEL - R+R |
| 7 | CORRECT OPERATION CHECK | All OK | Problems encountered | Operation |
|---|
| Check that the fault is no longer present | End of diagnosis | The fault persists | Contact technical service for further information on the problem |
