Vehicle Position Icon Wanders Across the Map When Driving (Does Not Follow A Displayed Road) or MAP Vehicle Icon Spins

Navigation System Symptom Troubleshooting - Vehicle position icon wanders across the map when driving (does not follow a displayed road) or map vehicle ICON spins

Vehicle position icon wanders across the map when driving (does not follow a displayed road) or map vehicle ICON spins

NOTE:
* Check the vehicle battery condition first Component Tests and General Diagnostics.
* This is not the same condition as when driving off-road (or on a fire or logging road).
* This condition is caused by a loss of map matching from a bad sensor input. Check for aftermarket or other objects that can block the GPS signal. Always do the Map Matching before proceeding with the troubleshooting Initial Inspection and Diagnostic Overview.
* Aftermarket metallic window tint or electronic devices located near the audio-navigation unit or GPS antenna can potentially interfere with the operation of the navigation system.
* Check any official Honda service website for more service information about the navigation system.
* Check the connectors for poor connections or loose terminals.

1. Problem verification:

-1. Test-drive the vehicle in an open area, and check if the vehicle position icon displays the actual vehicle position.

Does the vehicle position icon wanders across the map?
-YES- The failure is duplicated, go to step 2.
-NO- Intermittent failure, the system is OK at this time.

2. DTC check:

-1. Check for hard error codes Initial Inspection and Diagnostic Overview.

Are there any navigation DTCs indicated?
-YES- Go to indicated DTC's troubleshooting.
-NO- Go to step 3.

3. Determine possible failure area (BACK LT line, others):

-1. Go into the System Diagnostic Mode, and use the Car Status diagnosis to check the BACK signal.

Does the BACK signal [1] when the shift lever position is P or N?
-YES- Go to step 5.
-NO- Go to step 4.

4. Determine possible failure area (audio-navigation unit, BACK LT line):

-1. Go into the System Diagnostic Mode, and use the Car Status diagnosis to check the BACK signal.

-2. Move the shift lever to R.

Does the BACK signal change from [0] to [1] when the shift lever position is changed from P or N to R?
-YES- Replace the audio-navigation unit Audio-Navigation Unit Removal and Installation.
-NO- Go to step 6.

5. Shorted wire check (BACK LT line to power):

-1. Turn the ignition switch to LOCK (0).

-2. Disconnect the following connector.






-3. Turn the ignition switch to ON (II).

-4. Measure the voltage between test points 1 and 2.










Is there battery voltage?
-YES- Repair a short to power in the wire between the under-dash fuse/relay box and the audio-navigation unit.
-NO- Replace the audio-navigation unit Audio-Navigation Unit Removal and Installation.

6. Open wire check (BACK LT line):

-1. Move the shift lever to P or N.

-2. Turn the ignition switch to LOCK (0).

-3. Disconnect the following connector.






-4. Turn the ignition switch to ON (II).

-5. Move the shift lever to R.

-6. Measure the voltage between test points 1 and 2.










Is there battery voltage?
-YES- Replace the audio-navigation unit Audio-Navigation Unit Removal and Installation.
-NO- Repair an open in the wire between the audio-navigation unit and the under-dash fuse/relay box.