Toyota Sienna Service Manual: GPS Mark is not Displayed
INSPECTION PROCEDURE
1 CHECK CABIN
- 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 GPS mark reappears.
HINT: 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: Mark appears
NORMAL OPERATION
2 CHECK SURROUNDINGS
- 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.
HINT: 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 illustrated examples, see below.
OK: GPS mark is displayed.
SYSTEM RETURNS TO NORMAL
3 CHECK GPS INFORMATION (NAVIGATION CHECK MODE)
- Enter the "Navigation Check" mode (GPS Information).
- Check how many of the following codes appear in the "STS" column.
For DENSO Made:
T, P
For AISIN AW Made:
08H, 04H
OK: At least 3 codes appear
REPLACE RADIO AND NAVIGATION ASSEMBLY
Current Position Display does not Appear
INSPECTION PROCEDURE
1 CHECK RADIO AND NAVIGATION ASSEMBLY
Check if a map disc is inserted into the map disc slot.
OK:
A map disc is inserted
2 CHECK MAP DISC
Check that the map ...
Voice Guidance does not Function
INSPECTION PROCEDURE
1 CHECK NAVIGATION SYSTEM SETTING
Enter the "Menu" screen by pressing the "MENU" switch.
Select "Volume".
Check that " ...
Other materials:
Power back door system
PARTS LOCATION
...
On-vehicle inspection
1. INSPECT STEERING PAD (VEHICLE NOT INVOLVED IN COLLISION)
Perform a diagnostic system check.
With the steering pad installed on the vehicle,
perform a visual check. If there are any defects as
mentioned below, replace the steering pad with a
new one:
Cuts, minute cracks or ...
Disassembly
1. REMOVE OCCUPANT CLASSIFICATION ECU
2. REMOVE FRONT SEAT CUSHION SHIELD INNER RH
Remove the screw.
Using a screwdriver, disengage the claws and
remove the cushion shield inner.
HINT:
Tape the screwdriver tip before use.
3. REMOVE FRONT SEAT INNER BELT ASSEMBLY RH
&nbs ...
