939003720 - N039 I.C.S. DETECTS INCORRECT POSITION

The navigation system detects an incorrect position: junctions detected sooner or later
The navigation system takes about 100km 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
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 dirty1. Clean the map CD using a clean cloth
2. Map CD scratched2.Replace the map CD
3. CD does not correspond3.Replace with a specific map CD
4. The defect occurred after replacing the tyres and is therefore due to an imprecise wheel rpm distance conversion factor4.Cover about 100 km under excellent satellite reception conditions in order to reset the conversion factor
1CHECK USING DIAGNOSTIC EQUIPMENTALL OKPROBLEMS ENCOUNTEREDACTION
Connect to the Connect control unit to check for errors in the GPS aerialMove 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 signalsMove 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    See Test 5580MC SATELLITE NAVIGATOR OPERATION CHECKMove on to Step 4Connect navigation system defective (gyroscope blocked)Replace Connect    Op. 5580P12 CONNECT PANEL REPLACE
4GPS AERIAL CHECKALL OKPROBLEMS ENCOUNTEREDACTION
Check the GPS aerial connector is properly inserted in the seat on the navigation device.Check the power supply to the GPS aerial.    See Test 5580PE CHECK THE OPERATION OF THE CONNECT GPS AERIAL MODULEMove on to Step 51. Aerial incorrectly connected1. Restore the correct connection.    See E3510 RADIO
2. Aerial power supply incorrect2. Restore correct power supply    See E4090 NAVIGATOR
3. Aerial defective3. Replace the aerialOp. 5580M70
5CHECK ON CORRECT OPERATIONALL OKPROBLEMS ENCOUNTEREDACTION
Check that the fault is no longer presentEnd of diagnosis