Component Location
Gerneral Description

EPS CM (MDPS=Motor Driving Power Steering) 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 (MDPS=Motor Driving Power Steering) and then sets this code.

DTC Detecting Condition

Item

Detecting Condition

Possible cause

DTC Strategy

•

Voltage check

1.

Sticky fail-safe relay contact part

Enable conditions

•

Fail-safe relay "OFF"( just once at IG"ON")

•

Voltage between motor terminal < 5V

Threshold value

•

Fail-safe relay contact voltage ≥ 9.0 V

Diagnosis time

•

5 sec

Fail safe

•

Motor : OFF

•

Relay : OFF

•

Fail lamp : ON

•

Restoration condition : Power "OFF"

Schematic Diagram
note
To view Flash content, you need to install the appropriate browser extension
Яндекс.Метрика