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

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

NOTE:
- Always check for and resolve all CAN DTCs before troubleshooting the navigation system.
- Always check the connectors for poor connections or loose terminals.
- Before troubleshooting, make sure you have the navigation system anti-theft codes.
- After troubleshooting, enter the navigation system anti-theft codes.
- Verify that the correct navigation unit is installed for this model.
Go into the Diagnostic mode and use "Version".
- Always make sure that the correct DVD color and version are installed.
- Check on-line for service bulletins or other service information for the navigation system.
- 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 (Yaw rate, GPS, or VSP) input. Check for aftermarket or other objects that can block the GPS signal. Always perform Map matching before proceeding with the troubleshooting.

1. Go into the Diagnostic mode, and do the Navi System Link diagnostic, the Navi ECU diagnostic under "Unit Check", the Car Status check, the GPS Information check, the GPS Detail check, and the Yaw Rate check.

Are all the tests OK?

YES - The system is OK at this time.

NO - Repair the affected system. If the problem persists, swap a known-good navigation unit, and monitor the condition.