EPS CM controls EPS solenoid current accurately according to vehicle speed. EPS CM monitors that operating voltage supplied as IG S/W is too high or too low on ＂power supply terminal＂. If excessive high voltage or low voltage is detected, EPS CM stops current supply to solenoid to prevent unexpected operation or damage.
EPS CM sets this code if high voltage caused by faulty alternator or poor connention in power supply circuit is detected.
Item | Detecting Condition | Possible cause |
DTC Strategy | ● Battery Voltage Monitoring | ● Open/short in power circuit. ● Faulty ground circuit ● Faulty charging system. |
Enable conditions | ● Engine ＂ON＂ | |
Threshold value | ● When Vign is higher than 18V for more than 400ms. | |
Fail Safe | ● EPS warning lamp ＂ON＂ | |
Restoration conditions | ● When Vign is lower than 17V for more than 400ms. |
Bat. Voltage | IG Key ON | ENG. ON |
Approx. 11.8 [V]~12.5 [V] | Approx. 12.5 [V] ~ 14.5 [V] |
