An operating motor is used to support the driving force of steering wheel when the wheel is turned(rotated) by the driver. The operating motor (a brush type DC motor) is installed in middle of steering column and operates the steering column. The EPS motor can be damaged during disassembly or removal of the operating motor, so you must disassemble or remove the EPS motor with the assembly.
This DTC code refers to open/shorts in motor power circuit. This code is set if voltage monitored at two terminal of EPS CM is too high or low when EPS motor is not operated at normal motor power.
Item
Detecting Condition
Possible cause
DTC Strategy
Current check
Open/short in power circuit.
Open/short in ground circuit.
Contact resistance in connections.
Faulty EPS Motor
Faulty EPS CM
Enable conditions
Motor malfunction & relay voltage = 5.5 V
Threshold value
Motor end voltage = 0.5V or = 0.2 V
Diagnosis time
0.5 sec
Fail safe
Motor : OFF
Relay : OFF
Fail lamp : ON
Restoration condition : In a case that it is normal when turning the ignition switch into "ON" after Ignition "OFF"