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 is designed to operate only at engine "ON" because it's current attrition rate is high. It decides whether engine operates or not from vehicle speed and engine RPM. EPS CM sets this code and turns on warning lamp if IG S/W turns off when engine is operating.
Item | Detecting Condition | Possible cause |
DTC Strategy |
•
Voltage Monitoring |
•
Faulty ground circuit
•
Poor connection in ground circuit
•
Open in IG circuit |
Enable conditions |
•
Engine RPM > 500 & Vehicle speed > 2.7Km/h | |
Threshold value |
•
Open in IG circuit | |
Fail Safe |
•
EPS warning lamp "ON" (Back up function maintained for 310sec) | |
Restoration conditions |
•
IG On |
Bat. Voltage | IG Key ON | ENG. ON |
Approx. 11.8 [V]~12.5 [V] | Approx. 12.5 [V] ~ 14.5 [V] |
