| | Test results |
| 1 | FUNCTIONAL CHECK | All OK | Problems encountered | Operation |
|---|
| When the CITY button is pressed, check that:- The corresponding symbol lights up in the "NQS" | Move on to Step 2 | The symbol does not light up in the "NQS" | Move on to Step 4 |
| 2 | CITY FUNCTION CHECK | All OK | Problems encountered | Operation |
|---|
| Carry out a road test to check that there is a variation in the assistance when the CITY button in the control panel is pressed | End of diagnosis | The symbol in the panel is working whilst the assistance does not alter | Continue as indicated See table H025 NO ELECTRIC STEERING POWER ASSISTANCE WITH FAILURE WARNING LIGHT ON |
| 3 | CHECK USING DIAGNOSTIC EQUIPMENT | All OK | Problems encountered | Operation |
|---|
| Connect the diagnostic equipment (Examiner or other instruments) to the electric steering node diagnostic socket and check:- for the presence of errors at the electric steering node- for the presence of any errors at the NBC- for the presence of any errors at the NCM | Move on to Step 5 | 1. Errors present for the electric steering node2. CAN line from NGE to NBC faulty3. CAN line from NCM to NGE faulty | 1. Continue as instructed by the diagnostic equipment2. Restore CAN line electrical connections from NGE to NBC3. Restore CAN line electrical connections from NCM to NGE |
| 4 | CITY BUTTON CHECK | All OK | Problems encountered | Operation |
|---|
| Check that the City button is working properlyCheck the continuity of the wiring between the City button and the Body Computer Node See E7045 ELECTRIC STEERING | Move on to Step 5 | 1. City button defective2. Wiring broken3. Body Computer defective | 1. Replace the City button 2. Restore the wiring continuity Op. 7040A56 SWITCH UNIT IN DASHBOARD - R.R. 3. Replace Body Computer Op. 5505A32 BODY COMPUTER - R.R |
| 5 | CORRECT OPERATION CHECK | All OK | Problems encountered | Operation |
|---|
| Check that the fault is no longer present | End of diagnosis | Fault persists | Replace the steering column assembly, if the fault is still present after the replacement move on to Step 6 |
| 6 | CHECK USING DIAGNOSTIC EQUIPMENT | All OK | Problems encountered | Operation |
|---|
| Cancel the errors, disconnect the diagnostic station and place the key in the stop position for about 10 secs.Start up the engine and turn the steering wheel to the end of travel position in both directions.Reconnect the Examiner diagnostic equipment and check that there are no errors at the electric steering control unit | End of diagnosis | Fault persists | Replace the electric steering control unit |
