Solara L4-2.4L (2AZ-FE) (2006)
the current vehicle position: autonomous (dead reckoning) and GPS* (satellite) navigation. Both navigation methods are used in conjunction
with each other. *GPS (Global Positioning System)
HINT: The combination of autonomous and GPS navigation makes it possible to display the vehicle position even when the vehicle is in
places where the GPS radio wave cannot receive a signal. When only autonomous navigation is used, however, the mapping accuracy may
slightly decline.
b. Autonomous navigation
This method determines the relative vehicle position based on the running track determined by the gyro and vehicle speed sensors located in
the navigation ECU.
1. Gyro sensor
Calculates the direction by detecting angular velocity. It is located in the radio and navigation assembly.
2. Vehicle speed sensor
Used to calculate the vehicle running distance.