The EPS CM (MDPS=Motor Driving Power Steering) gets signals such as engine RPM and vehicle speed from engine ECM through CAN communication line. And it operates it's MDPS system.
The EPS CM (MDPS=Motor Driving Power Steering) sets this DTC if it hasn't gotten engine RPM signals from engine ECM.
Item | Detecting Condition | Possible cause |
DTC Strategy |
•
CAN signal monitoring | 1. Poor connection 2. Error in a relevant sensor or system |
Enable conditions |
•
IG KEY ON | |
Threshold value |
•
When the EPS CM doesn't get engine RPM signals from engine ECM. | |
Fail safe |
•
Motor : 254km/h controlled
•
Relay : ON
•
Fail lamp : ON
•
Restoration condition : EPS receives correct EMS signal from ECM (Return to Normal state) |
