General Information

4WD Control
P1751 Wheel Speed Sensor Signal (Right Front) - General Information

Component Location





General Description

Wheel Speed Sensor senses vehicle speed and difference between front and rear wheel speed.
Opreation for getting Rotating Speeds of front/rear wheel can be got from deviding wheel speed sensor Rotating Speeds of front/rear by 2.
In case of ESP(or FTCS) system applied 4WD ECM(= TCCU : Transfer Case Control Unit) receives this signal through CAN line, If it is not the case 4WD ECM receives this signal directly by using PWM communication line.
The wheel speed sensor is the essential component the ITM ECU uses to determine how to distribute driving force to front / rear wheel with steering angle sensor signal and TPS, brake signal.

DTC Description

If failure is detected 4WD ECM prohibits the ITM control and cuts the current to control coil.

DTC Detecting Condition





Dignostic Circuit Diagram





Signal Waveform & Data




Fig.1) CAN Signal : high & low