Vehicle Position Icon Constantly Leaves Road, Moves Erratically or Is Displayed Very Far From Actual Vehicle Position
- Check the vehicle battery condition first.
- Check that the GPS antenna is plugged in.
- 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 metallic window tinting or other objects that can block the GPS signal. Always do MAP MATCHING before proceeding with the troubleshooting.
- Make sure that the correct DVD color and version are installed.
- Inspect the DVD for dirt or damage.
- Check any official Honda service website for more service information about the navigation system.
- Check the GPS signal reception in an open area.
- Check the GPS icon on the navigation screen.
Is the GPS icon white?
YES - Do the troubleshooting for GPS icon is white or not shown (see NAVIGATION DISPLAY BUTTONS DO NOT WORK OR RESPOND PROPERLY ).
NO - Go to step 2.
- Go into the Self-Diagnosis Mode, and do the Yaw Rate test (see YAW RATE
) to check the yaw rate sensor.
Is the yaw rate sensor OK?
YES - Go to step 3.
NO - Replace the audio-navigation unit (see AUDIO-NAVIGATION UNIT REMOVAL/INSTALLATION ).
- Go into the Self-Diagnosis Mode, and use the Car Status test (see YAW RATE TUNING
) to check the vehicle speed pulse.
Is the vehicle speed pulse OK?
YES - The condition may be normal. Check to see if the condition occurs in the same place in a known-good vehicle. If it does, the problem could be in the database. Go to step 4.
NO - Check for an open in the VSP wire between the audio-navigation unit and the ECM/PCM. If the wire is OK, substitute a known-good audio-navigation unit (see AUDIO-NAVIGATION UNIT REMOVAL/INSTALLATION ), and retest. If the problem goes away, replace the original audio-navigation unit (see AUDIO-NAVIGATION UNIT REMOVAL/INSTALLATION ). If the problem does not go away, replace the ECM/PCM (see ECM/PCM REPLACEMENT ).
- Substitute a known-good audio-navigation unit, and check to see if the problem occurs in the same place.
Does the problem occur in the same place?
YES - The problem is in the database. Report the problem according to the Navigation System Manual under Reporting Errors.
NO - Replace the original audio-navigation unit (see AUDIO-NAVIGATION UNIT REMOVAL/INSTALLATION ).