Toyota Sequoia (2005). Manual — part 591
DIDBO–01
–
DIAGNOSTICS
NAVIGATION SYSTEM
DI–2159
2353
NAVIGATION SYSTEM
PRECAUTION
NOTICE:
When disconnecting the battery terminal, initialize the following system after the terminal is recon-
nected.
System Name
See Page
Back Door Power Window Control System
![](/vehicles/linovind/vere/fry/sayevo.png)
DIDBP–01
I27727
Instrument Panel J/B
RAD NO. 2 Fuse
ECU–B Fuse
AM1 Fuse
Engine Room J/B
RAD NO. 1 Fuse
RAD NO. 3 Fuse
Steering Pad
Switch
Ignition Switch
Disc Player
Controller
(*1)
Stereo
Component
Amplifier
Multi–display
Controller (*1)
VTR
Terminal
(*1)
Headphone
Terminal
(*1) (*2)
Radio and
Navigation Assy
GPS Antenna
Tweeter
Television Display Assy (*1)
Rear Seat Audio
Controller Assy (*2)
Rear Door Speaker
Rear Door Speaker
Front Door Speaker
and Woofer
Front Door Speaker
and Woofer
*1: w/ RSE System
*2: w/ RSA System
DI–2160
–
DIAGNOSTICS
NAVIGATION SYSTEM
2354
LOCATION
![](/vehicles/linovind/vere/fry/vend.png)
DIDBQ–01
I28761
Radio
and
Navigation
Assy
Steering Pad Switch
Stereo
Component
Amplifier
Assy
Vehicle Speed Signal
Reverse Signal
GPS Antenna
AVC–LAN
Park/Neutral Position Switch
Combination Meter
Speakers
Display Signal
Sound Signal
Multi–display
Controller
Assy (*1)
Rear Seat
Audio
Controller
(*2)
*1: w/ RSE System
*2: w/ RSA System
(*1)
–
DIAGNOSTICS
NAVIGATION SYSTEM
DI–2161
2355
SYSTEM DIAGRAM
![](/vehicles/linovind/vere/fry/veled.png)
DIDBR–01
I28195
I28196
I28197
DI–2162
–
DIAGNOSTICS
NAVIGATION SYSTEM
2356
SYSTEM DESCRIPTION
1.
SYSTEM NORMAL CONDITION CHECK
(a)
If the symptom is applicable to any of the following, it is intended behavior, and not a malfunction.
Symptom
Answer
A longer route than expected is chosen.
Depending on the road conditions, the navigation ECU may determine that a longer
route is quicker.
Even when distance priority is high, the shortest route is not
shown.
Some paths may not be advised due to safety concerns.
When the vehicle is put into motion immediately after the
engine starts, the navigation system deviates from the actu-
al position.
If the vehicle starts before the navigation system activates, the system may not
react.
When running on certain types of roads, especially new
roads, the vehicle position deviates from the actual position.
When the vehicle is driving on new roads not available on the map disc, the system
attempts to match it to another nearby road, causing the position mark to deviate.
(b)
The following symptoms are not a malfunction, but are
caused by errors inherent in the GPS, gyro sensor, speed
sensor, and navigation ECU.
(1)
The current position mark may be displayed on a
nearby parallel road.
(2)
Immediately after a fork in the road, the current ve-
hicle position mark may be displayed on the wrong
road.
(3)
When the vehicle turns right or left at an intersec-
tion, the current vehicle position mark may be dis-
played on a nearby parallel road.
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