Toyota Tundra. Manual — part 563

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

Fig. 364: 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. 365: 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 ).

b. 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.

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Navigation - Tundra

Fig. 366: Diagnostic Menu Screen Display - GPS Information
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

Result

GPS INFORMATION (NAVIGATION CHECK MODE) RESULT CHART

B: REPLACE NAVIGATION RECEIVER (see REMOVAL (For Floor Shift Type) )

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

A: REPLACE NAVIGATION RECEIVER (see REMOVAL (For Column Shift Type) )

VOICE GUIDANCE DOES NOT FUNCTION

INSPECTION PROCEDURE

1. CHECK NAVIGATION SYSTEM SETTING

a. Enter the "Menu" screen by pressing the "MENU" switch.

Fig. 367: Identifying Menu Switch
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

b. Select "Volume".

Result

Proceed to

OK (for Column Shift Type)

A

OK (for Floor Shift Type)

B

NG

C

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Navigation - Tundra

c. Check that "OFF" is not selected.

OK: OFF is not selected.

Fig. 368: Identifying Volume OFF Switch
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

NG: TURN VOICE GUIDANCE VOLUME UP TO 4 USING VOICE ADJUSTMENT
SWITCHES

OK: Go to Next Step

2. CHECK NAVIGATION SETTING

a. Enter the "Menu" screen by pressing the "MENU" switch.

Fig. 369: Identifying Menu Switch
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

b. Select "Setup".

c. Check that "Voice Guidance in All Modes" is not OFF.

OK: "Voice Guidance in All Modes" is not OFF.

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Navigation - Tundra