The EPS CM (MDPS=Motor Driving Power Steering) senses the state of battery voltage in order to operate it's system normally.
If battery voltage is too low, the system couldn't run. And if it is too high, the EPS CM couldn't be damaged.
If the voltage of IG circuit is out of the setting value, the EPS(MDPS=Motor Driving Power Steering) unit sets this DTC.
Item | Detecting Condition | Possible cause |
DTC Strategy |
•
Voltage Monitoring | 1. Faulty ground circuit 2. Poor connection in ground circuit 3. Open in IG circuit |
Enable conditions |
•
System power ON | |
Threshold value |
•
When a vehicle speed through CAN line is over 3km/h in the status of Ignition OFF.
•
When an engine RPM signal through CAN line is over 500 RPM in the status of Ignition OFF and continue more than 4 seconds.
•
When a signal of Ignition ON is detected with CAN communication OFF. | |
Fail Safe |
•
Motor : ON
•
Relay : ON |
Bat. Voltage | IG Key ON | ENG. ON |
Approx. 11.8 [V] ~ 12.5 [V] | Approx. 12.5 [V] ~ 14.5 [V] |
