CONSTRUCTION
An active type speed sensor is used. This sensor contains a sensor IC.
The magnet type sensor rotor, which consists of N and S poles that are arranged in a circle, is integrated with the hub bearing inner race.*
*: Except for the front wheels on 2WD models
Figure 1. Front Wheel (2WD models)
| *1 | Front Speed Sensor | *2 | Sensor Rotor |
Figure 2. Front Wheel (2WD PreRunner and 4WD models)
| *1 | Front Speed Sensor | *2 | Sensor Rotor |
Figure 3. Rear Wheel
| *1 | Rear Speed Sensor | *2 | Sensor Rotor |
The active type speed sensor uses a sensor IC to detect magnetic field changes caused when the sensor rotor rotates, and the sensor outputs the detected information to the skid control ECU as digital pulses (vehicle speed signal).
To detect the vehicle speed, the frequency of the output pulses is used. Because the active type sensor outputs digital pulses, it can detect vehicle speeds even when the vehicle is nearly stationary.
| *1 | Vehicle Speed |
| *2 | Digital Output |
| *3 | Sensor Output |