General Information

Component Location





General Description

The wheel speed sensor is the essential component the ABS ECU uses to calculate vehicle speed and to determine whether wheel lock occurs.
For example, rear wheel speed signal is used as a reference value, for vehicle speed, in front wheel drive vehicles, and if a difference between front and rear wheel speed occurs, then ABS control is performed.
Wheel speed sensor is active hall-sensor type.






DTC Description

The ABS ECU monitors the wheel speed sensor circuit continuously. Each wheel speed sensor is checked separately.
A failure is detected if the measured sensor signal current is continuously out of the specified range for the specified min. fault duration.
Warning lamp is turned OFF unless additional faults are detected when the IG KEY is turned ON again, and wheel speed is more than 10 km/h. (6.2 mph)

DTC Detecting Condition





Specification





Schematic Diagram