NAVIGATION SYSTEM(for SD) GPS Mark is not Displayed

PROCEDURE


  1. CHECK CABIN


    1. Check the cabin for any object that might interrupt radio reception or additional devices which use radio waves on the instrument panel. If such an object exists, remove it and check if the GPS mark reappears.

      Tech Tips

      The GPS uses extremely weak 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
      The GPS mark appears.
      Result
      Proceed to
      OK
      NG

    OK

    NORMAL OPERATION

    NG

  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 place, relocate the vehicle and check if the GPS mark reappears.

      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.

      A01V7THC18
      *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 - -
      OK
      The GPS mark is displayed.
      Result
      Proceed to
      OK
      NG

    OK

    SYSTEM RETURNS TO NORMAL

    NG

  3. CHECK GPS INFORMATION (OPERATION CHECK)


    1. A01VA5J

      Enter the "System Sensors Check" screen. Refer to Check GPS & Vehicle Sensors in Operation Check.

      Click here

    2. Check how many of the following codes appear in the "Reception number" column.

      Tech Tips

      T or P appears.

      OK
      At least 3 codes appear.
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE NAVIGATION RECEIVER ASSEMBLY Click here

    NG

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Click here