NAVIGATION SYSTEM (for Radio and Display Type) Vehicle Position Mark Deviates Greatly

INSPECTION PROCEDURE

Note

  • If standard size tires are not installed, the vehicle position mark may deviate from the route even if the navigation system is operating normally.

  • Make sure that standard size tires are installed to the vehicle before inspection.

PROCEDURE

  1. CHECK CABIN

    1. Check the cabin for any object that might interrupt radio reception on the instrument panel. If such an object exists, remove it and check if the vehicle position mark returns to the appropriate position.

      Tech Tips

      The GPS uses extremely faint radio waves originating from satellites. If the signal is interrupted by obstructions or other radio waves, the GPS may not be able to properly receive the signal.

      OK
      After driving for a while, the vehicle position mark returns to the appropriate position.
    NG
    OK
  2. CHECK SURROUNDINGS

    1. Check if the vehicle is in a location where GPS signal reception is poor. If the vehicle is in such a location, move the vehicle and check if the vehicle position mark returns to the appropriate position.

      Tech Tips

      The GPS uses 24 satellites in 6 orbits. At any point in time, 4 satellites should be able to pinpoint your vehicle. However, GPS signals may not reach the vehicle due to influence from the surroundings, vehicle direction and time. For examples, see the following illustration.

      A011VRUE28
      OK
      After driving for a while, the vehicle position mark returns to the appropriate position.
      Text in Illustration
      *a Example *b In a tunnel
      *c In a building *d Under an overpass
      *e On a forest or tree-lined path *f Between tall buildings
      *g Under a cliff or overhang - -
    NG
    OK
  3. CHECK GPS INFORMATION (OPERATION CHECK)

    1. Display the "Location & GPS Information" screen.

      A011WDCE01
    2. Check that the actual vehicle location and current location information displayed on the screen match.

      OK
      Actual vehicle location and current location information displayed on the screen match.
      Text in Illustration
      *a Example
    NG
    OK
  4. CHECK VEHICLE SIGNAL (OPERATION CHECK)

    1. Enter the "Vehicle Signal Check Mode" screen. Refer to Check Vehicle Signal in Operation Check Click here.

    2. Check that the display changes between ON and OFF according to the shift lever operation.

      A011W4R
      OK
      Shift Lever Position Display
      Except R OFF
      R ON

      Tech Tips

      The display is updated once per second. It is normal for the display to lag behind the actual switch operation.

    NG
    OK