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

0	CHECK THE MAP CD	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	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 tyres	Move on to Step 1	1. Map CD dirty	1. Clean the map CD using a clean cloth
			2. Map CD scratched	2.Replace the map CD
			3. CD does not correspond	3.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 factor	4.Cover about 100 km under excellent satellite reception conditions in order to reset the conversion factor
1	CHECK USING DIAGNOSTIC EQUIPMENT	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Connect to the Connect control unit to check for errors in the GPS aerial	Move on to Step 2	Presence of errors	Continue as instructed by the diagnostic equipment
2	CHECK USING DIAGNOSTIC EQUIPMENT	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Connect to the ABS control unit to check for errors in the wheel speed signals	Move on to Step 3	Presence of errors	Continue as instructed by the diagnostic equipment
3	CHECK NAVIGATION SYSTEM OPERATION	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check the operation of the navigation system device    See Test 5580MC SATELLITE NAVIGATOR OPERATION CHECK	Move on to Step 4	Connect navigation system defective (gyroscope blocked)	Replace Connect    Op. 5580P12 CONNECT PANEL REPLACE
4	GPS AERIAL CHECK	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	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 MODULE	Move on to Step 5	1. Aerial incorrectly connected	1. Restore the correct connection.    See E3510 RADIO
			2. Aerial power supply incorrect	2. Restore correct power supply    See E4090 NAVIGATOR
			3. Aerial defective	3. Replace the aerialOp. 5580M70
5	CHECK ON CORRECT OPERATION	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check that the fault is no longer present	End of diagnosis