NAVIGATION SYSTEM(for HDD) 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 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.

      Result
      Proceed to
      The GPS mark appears
      The GPS mark does not appear

    The GPS mark appears

    NORMAL OPERATION

    The GPS mark does not appear

  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.

      A01CXQFC16
      *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 - -
      Result
      Proceed to
      The GPS mark is displayed
      The GPS mark is not displayed

    The GPS mark is displayed

    SYSTEM RETURNS TO NORMAL

    The GPS mark is not displayed

  3. CHECK GPS INFORMATION (OPERATION CHECK)


    1. A01CY5J

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

      Click here

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

      Tech Tips

      T, U or P appears.

      Result
      Proceed to
      At least 3 codes appear
      Less than 3 codes appear

    At least 3 codes appear

    REPLACE NAVIGATION ECU SUB-ASSEMBLY Click here

    Less than 3 codes appear

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