198001895 - N039 NAVIGATOR DETECTS INCORRECT POSITION (Connect)

The navigation system detects an incorrect position: junctions detected sooner or later.
The navigation system takes about 50km to self-regulate accurately from the first system start-up and when the tyres are changed for others of a different size. Under conditions or poor wheel grip (skidding on ice), the system temporarily detects an incorrect position.
TEST RESULTS
0CHECK THE MAP CDALL OKPROBLEMS ENCOUNTEREDACTION
Check that the map CD is cleanCheck that the map CD is not scratchedCheck that the CD is compatible with the type of navigation systemCheck that the defect does not arise immediately after replacing the tyresMove on to Step 11. Map CD dirty2. Map CD scratched3. CD does not correspond4. The defect occurred after replacing the tyres and is therefore due to an imprecise wheel rpm/distance conversion factor1. Clean the map CD using a clean cloth2. Replace the map CD3. Replace with a specific map CD4. Cover about 50 km under excellent satellite reception conditions in order to reset the conversion factor
1CHECK USING DIAGNOSTIC EQUIPMENTALL OKPROBLEMS ENCOUNTEREDACTION
Connect to the centre console to check for errors in the GPS aerial.Move on to Step 2Presence of errorsContinue as instructed by the diagnostic equipment.
2CHECK USING DIAGNOSTIC EQUIPMENTALL OKPROBLEMS ENCOUNTEREDACTION
Connect to the ABS control unit to check for errors in the wheel speed signals.Move on to Step 3Presence of errorsContinue as instructed by the diagnostic equipment.
3CHECK NAVIGATION SYSTEM OPERATIONALL OKPROBLEMS ENCOUNTEREDACTION
Check the operation of the navigation system device by carrying out the Vedere Prova   Move on to Step 4Centre console with defective navigation system: (gyroscope jammed).Replace the centre console
4GPS AERIAL CHECKALL OKPROBLEMS ENCOUNTEREDACTION
Check the GPS aerial connector is properly inserted in the seat on the navigation device.Check the GPS aerial is correctly suppliedEnd of diagnosis1. Aerial incorrectly connected2. Aerial power supply incorrect3. Aerial defective1. Restore the correct connection    See E3510 RADIO 2. Restore correct power supply3. Replace the aerial