EPS(MDPS=Motor Driving Power Steering) ECU monitors internal circuit to protect abnormal operation. This test includes hardware (MCU, RAM, ROM and so on) test.
EPS(MDPS=Motor Driving Power Steering) ECU checks operating condition of H/W periodically. EPS ECU sets this code and turns on warning lamp if there is a fault in H/W. At that time EPS ECU inhibits EPS opreation.
Item | Detecting Condition | Possible cause |
DTC Strategy |
•
Check ECU H/W | 1. Faulty MCU 2. Faulty memory 3. Sensor/motor breakdown accumulation |
Enable conditions |
•
IG ON | |
Threshold value |
•
ECU H/W error occurs | |
Fail Safe |
•
EPS warning lamp "ON", EPS control is inhibited | |
Restoration conditions |
•
Normal condition after IG on → off |
