Driving Test

During the driving test, diagnose the system by checking the difference of symptoms with each sensor "ON" or "OFF".

1. Test pattern 1
   
   Test method in which current position adjustment is not made according to GPS data.
   • Remove the GPS antenna connector from the display and "NAVI" control unit. Drive the vehicle. Before driving the vehicle, perform adjust current location, see "ADJUST CURRENT LOCATION" SETTING .
2. Test pattern 2
   
   Test procedure in which map matching is not used.
   • Before driving the vehicle, perform adjust current location, see "ADJUST CURRENT LOCATION" SETTING . With the ignition switch "OFF" and the map CD-ROM removed from the display and "NAVI" control unit, drive the vehicle. After driving the vehicle, reinstall the map CD-ROM. Compare the saved driving tracks for the vehicle's current location with roads on the map.
3. Example
   
   The position marker consistently indicates the wrong position when driving in the same area. Determine if this is the result of the map matching function or the GPS function.

   • Perform Test Pattern 1
     
     To verify the accuracy of the road configuration shown on the display.
   • Perform Test Patterns 1 & 2
     
     To make distance calibration and adjustments.
     1. Compare the map and the saved driving tracks. The precision of the saved driving tracks is within several hundred meters
   • Perform Test Patterns 1 & 2
     
     
     1. Make adjustments by driving the vehicle over a known course (highway or other road where distance is clearly marked). Calibrate the distance against a known distance using; calibration value = screen display distance/actual distance.