A "hot at all times" from engine control relay is supplied to EPS CM as fail safe relay when EPS CM is "ON". EPS CM uses this as the source in EPS motor and system.
Item | Detecting Condition | Possible Cause |
DTC strategy | ● Voltage check | ● Sticky fail-safe relay contact part |
Enable conditions | ● Fail-safe relay "OFF"( just once at IG"ON") ● Voltage between motor terminal < 5V | |
Threshold value | ● Fail-safe relay contact voltage ≥ 5.5 V | |
Diagnosis time | ● 5 sec | |
Fail safe | ● Motor : OFF ● Relay : OFF ● Fail lamp : ON ● Restoration condition : Power "OFF" |
