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 ESP motor can be damaged during disassembly or removal of the operating motor, so you must disassemble or remove the ESP motor with the assembly.
Item
Detecting Condition
Possible Cause
DTC strategy
? Current check
? Short / poor connection in ground circuit
? Short in control circuit
? Faulty motor.
? Faulty EPS CM
Enable conditions
? System power "ON"
? Fail-safe relay contact voltage > 8 V
Threshold value
? Measure current value > 50 A
Diagnosis time
? 48 ms
Fail safe
? Motor : OFF
? Relay : OFF
? Fail lamp : ON
? Restoration condition : Power "OFF"