General Information

4WD Control

P1717 Steering Wheel Angle Sensor 1-Input Signal - General Information

Component Location





General Description

Steering Wheel Angle Sensor installed in steering wheel prevents a state of TCB (Tight Corner Braking) by sensing the rotating direction & straight driving of vehicle and is used for EMC duty control. In case of ESP 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 from Steering Wheel Angle Sensor directly.
** TCB (Tight Corner Braking) : TCB is that the vehicle makes an abnormal noise and hesitation when the vehicle turns left / right fully with low speed at a paved road.

DTC Description

If the signals related to Steering Angle Sensor is more than 4.5 V or those aren't inputted, the 4WD ECM sets this DTC. In a case of ESP system applied, if there is an open in the CAN BUS or there is an internal ECU fault, it also sets this DTC.

DTC Detecting Condition





Diagnostic Circuit Diagram





Signal Waveform & Data




Fig.1) Steering Wheel Angle Sensor #1, #2