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 Battery Test.
* 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 How To Troubleshoot The Navigation System.
* 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:

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:

DTC check
-1. Check for hard error codes How To Troubleshoot The Navigation System.

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):

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 Navigation System Diagnostic Mode.

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):

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 Navigation System Diagnostic Mode.

-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):

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):

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.