Toyota Tundra. Manual — part 505

Fig. 140: Identifying Ignition Switch ON Position
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

NG: TURN IGNITION SWITCH TO ON POSITION WHEN VEHICLE IS COMPLETELY
STOPPED

OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS
TABLE

VEHICLE POSITION MARK IS NOT UPDATED

INSPECTION PROCEDURE

1. CHECK MAP DISC

a. Check that the map disc is not deformed or cracked.

Fig. 141: Checking Map Disc For Deformed Or Cracked
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

OK: No deformations or cracks on map disc.

NG: REPLACE MAP DISC

OK: Go to Next Step

2. CHECK MAP DISPLAY

a. Check if a touch scroll can be performed on the map display.

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Navigation - Tundra

OK: Touch scroll can be performed.

NG: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS
TABLE

OK: Go to Next Step

3. CHECK VEHICLE SENSOR (NAVIGATION CHECK MODE)

a. Enter the "Navigation Check" mode (Vehicle Sensors) (see NAVIGATION CHECK MODE ).

Fig. 142: Diagnostic Menu Screen Display - Navigation Check Mode
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

b. While driving the vehicle, compare the "Speed" indicator to the reading on the speedometer. Check

if these readings are almost equal.

OK: The readings are almost equal.

NG: Go TO "SPEED SIGNAL DOES NOT CHANGE IN NAVIGATION CHECK MODE" IN
PROBLEM SYMPTOMS TABLE

OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS
TABLE

CURRENT POSITION DISPLAY DOES NOT APPEAR

INSPECTION PROCEDURE

1. CHECK NAVIGATION RECEIVER

a. Check if a map disc is inserted into the map disc slot.

OK: A map disc is inserted.

NG: INSERT MAP DISC IN MAP DISC SLOT

OK: Go to Next Step

2. CHECK MAP DISC

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Navigation - Tundra

a. Check that the map disc is not deformed or cracked.

Fig. 143: Checking Map Disc For Deformed Or Cracked
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

OK: No deformations or cracks on the map disc.

NG: REPLACE MAP DISC

OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS
TABLE

GPS MARK IS NOT DISPLAYED

INSPECTION PROCEDURE

1. CHECK CABIN

a. 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.

NG: Go to step 2

OK: NORMAL OPERATION

2. CHECK SURROUNDINGS

a. 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:

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Navigation - Tundra

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

Fig. 144: Identifying GPS Signal In Different Location
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

OK: GPS mark is displayed.

NG: Go to step 3

OK: SYSTEM RETURN TO NORMAL

3. CHECK GPS INFORMATION (NAVIGATION CHECK MODE)

a. Enter the "Navigation Check" mode (GPS Information) (see NAVIGATION CHECK MODE ).

Fig. 145: Display - GPS Information (Navigation Check Mode)
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

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

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Navigation - Tundra