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Home >> Infiniti >> 2018 >> Q70 Hybrid Luxe >> Repair and Diagnosis >> Steering >> Steering Control Systems >> Steering Control System (Hybrid) >> System Description >> System >> Fail-safe

System Description: System: Fail-safe

If a malfunction occurs in the system, the fail-safe function stops the system (manual steering state) or restricts its operation (certain steering assist force). When the system is stopped, the hybrid EPS (electrical power steering) warning lamp illuminates to inform the driver that manual steering state is in effect.

DTC

Fail-safe condition

C1601

The assist force is reduced gradually according to the voltage, eventually ending with manual steering state.

C1604

Manual steering state

C1606

C1607

Certain steering assist force

NOTE: When an internal malfunction occurs, the system changes to manual steering state.

C1608

Manual steering state

C1609

Certain steering assist force

C1612

Manual steering state

C1614 *

U0415

Normal control

U0428

Certain steering assist force

U1000

Normal control

NOTE: If the cause is in a different ECU, the state changes to certain steering assist force.

U1010

Normal control

U14FE

U14FF

Normal control

NOTE: If the vehicle speed signal (METER) is abnormal, the state changes to certain steering force.

*: If the steering angle speed is too fast during air bleeding work, "DTC1614" may be detected.