Toyota Tundra. Manual — part 523

Fig. 218: Identifying Navigation System Parts Location - For Crewmax (3 Of 3)
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Navigation - Tundra

Fig. 219: Identifying Navigation System Parts Location - W/Rear Seat Entertainment System
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

SYSTEM DIAGRAM

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Navigation - Tundra

Fig. 220: Navigation System Diagram
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

SYSTEM DESCRIPTION

1. NAVIGATION RECEIVER OUTLINE

a. Conventionally, 2 separate devices, a "radio and display" and "navigation ECU", are used. In this

model, these 2 devices are combined into a single unit.

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Navigation - Tundra

Fig. 221: Identifying Radio & Display And Navigation ECU
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

2. NAVIGATION SYSTEM OUTLINE

a. Vehicle position tracking methods

1. It is essential that the navigation system correctly tracks the current vehicle position and

displays it on the map. There are 2 methods to track the current vehicle position: autonomous
(dead reckoning) and GPS* (satellite) navigation. Both navigation methods are used in
conjunction with each other.

HINT:

*: GPS (Global Positioning System)

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Navigation - Tundra