General Information

Motor driven Power Steering
C1704 EPS Module(fail safe relay stuck) Malfunction - General Information

Component Location





Gerneral Description

EPS CM measures operating torque using torque sensor when driver operates steering wheel. The EPS CM controls the current of EPS motor in proportion to vehicle speed and operating torque of steering wheel. EPS CM, at times, supplies or cuts off current (as determined by engine control relay fail safe relay inside EPS CM) to EPS motor operating source and system source.

DTC Description

This DTC code is about failure of fail safe relay. While monitoring relay contact voltage, if motor source is supplied continuously, even with IG key OFF, EPS CM regards this as stuck relay inside EPS CM and then sets this code.

DTC Detecting Condition





Schematic Diagram