Symptom Troubleshooting
Navigation System Symptom Troubleshooting - 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:
- Check the vehicle battery condition first Battery Test.
- Check for connectors for poor connections or loose terminals.
- 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.
- Always check for and resolve all CAN DTCs before troubleshooting the navigation system.
- Verify that the correct navigation unit is installed for this model. Go into the System Diagnostic Mode, and use the Version.
- Make sure that the correct DVD color and version are installed.
- Check for aftermarket metallic window tinting.
- Inspect the DVD for dirt or damage.
- Check any official Honda service website for more service information about the navigation system.
- Before troubleshooting, make sure you have the anti-theft codes for the audio system and the navigation system.
- After troubleshooting, enter the anti-theft codes for the audio system and the navigation system.
1. Turn the ignition switch to ON (II).
2. Check the GPS icon on the navigation screen.
Is the GPS icon white or missing?
YES -
Go to GPS icon is white or not shown troubleshooting Symptom Troubleshooting.
NO -
Go to step 3.
3. Check for the hard error code.
Are there any navigation DTC(s) indicated?
YES -
Troubleshoot the indicated navigation DTC(s).
NO -
Go to step 4.
4. Go into the System Diagnostic Mode, and use the Car Status diagnosis to check the BACK signal.
Does the BACK signal change from [0] to [1] when the shift lever position is changed from P or N to R?
YES -
Go to step 5.
NO -
Troubleshoot the back-up light. If OK, go to step 7.
5. Go into the System Diagnostic Mode, and use the Car Status diagnosis to check the VSP signal.
6. Drive the vehicle, and watch the VSP signal.
Does the VSP signal change from [0] to [1] as you drive?
YES -
The problem may be a characteristic of the system. Check to see if the problem occurs in the same place in a known-good vehicle. If it does, the problem could be in the database. Go to step 21.
NO -
Go to step 11.
7. Turn the ignition switch to LOCK (0).
8. Disconnect navigation unit connector A (8P).
9. Turn the ignition switch to ON (II).
10. Measure the voltage between navigation unit connector A (8P) terminal No. 5 and body ground when the shift lever is in R.
Is there battery voltage?
YES -
Replace the navigation unit Service and Repair.
NO -
Repair an open or high resistance in the wire between the navigation unit and the driver's under-dash fuse/relay box.
11. Turn the ignition switch to LOCK (0).
12. Jump the SCS line with the HDS.
13. Disconnect ECM/PCM connector A (49P).
14. Turn the ignition switch to ON (II).
15. Measure the voltage between ECM/PCM connector A (49P) terminal No. 30 and body ground.
Is there about 5 V?
YES -
Go to step 17.
NO -
Go to step 16.
16. Measure the voltage between navigation unit connector A (8P) terminal No. 6 and body ground.
Is there about 5 V?
YES -
Repair an open or a short in the wire between the navigation unit and the ECM/PCM.
NO -
Replace the navigation unit Service and Repair.
17. Turn the ignition switch to LOCK (0).
18. Reconnect ECM/PCM connector A (49P).
19. Turn the ignition switch to ON (II).
20. Raise the vehicle on a lift, and rotate the wheels while measuring the voltage between navigation unit connector A (8P) terminal No. 6 and body ground.
Does the voltage pulse between 0 V and 5 V as you rotate the wheels?
YES -
Replace the navigation unit Service and Repair.
NO -
Update the ECM/PCM ECM/PCM Update if it does not have the latest software, or substitute a known-good ECM/PCM.
21. Turn the ignition switch to LOCK (0).
22. Substitute a known-good navigation unit Service and Repair, 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 and should be considered a characteristic of the system. Report the problem according to the Navigation Manual under Reporting Errors and look for improvements in future databases.
NO -
Replace the original navigation unit Service and Repair.