EPS CM (MDPS=Motor Driving Power Steering) controls warning lamp by sending a signal via CAN line. After sending a message, EPS CM checks signal about whether other ECU receives a signal correctly. If EPS CM receives signal from other ECU it recognizes that a message was transmitted normal.
EPS CM (MDPS=Motor Driving Power Steering) sets this code If EPS doesn't transmit or receive a message normally.
Item | Detecting Condition | Possible cause |
DTC Strategy |
•
Check signal | 1. Poor connection 2. Open or short in the CAN line |
Enable conditions |
•
IG ON | |
Threshold value |
•
EPS CM can't receive signal from other ECU | |
Restoration conditions |
•
EPS CM receives signal from other ECU | |
Fail safe |
•
Motor : 254km/h controlled
•
Relay : ON
•
Fail lamp : ON
•
Restoration condition : EPS receives normal EMS signal from ECM (Return to Normal state) |
