POWER STEERING SYSTEM (for Hatchback) > FAIL-SAFE CHART


When a problem occurs in the electronic power steering system, the EPS warning light on the combination meter comes on, and the ECU stops the steering power assist, maintains the amount of power assist constant, or reduces the amount of power assist to protect the system.

DTC No.
Malfunction
Fail-safe
C1511
C1512
C1513
C1514
C1516
C1517
Torque sensor malfunction
Power assist stopped
C1524
Motor malfunction
Power assist stopped
C1531
C1532
Power steering ECU malfunction
Power assist stopped
C1533
Temperature sensor malfunction in power steering ECU
Assist force restricted
C1534
EEPROM abnormal
Controlled using current default map
C1535
Steering wheel location data error
Power assist stopped
C1541*1
Vehicle speed signal error
Assist force restricted
C1542*1
C1551
IG power source voltage error
Assist force restricted
C1552
PIG power source voltage error
Assist force restricted
C1553
Overvoltage at IG and PIG terminals
Assist force restricted
C1554
Power source relay malfunction
Power assist stopped
C1555
Motor relay malfunction
Power assist stopped
C1581
Assist Map Number Un-Writing
Power assist permitted using default value
C1582
Assist Map Number Mismatch
Control is performed using the current assist map.
U0100
ECM communication error
Amount of power assist remains constant at speed of 70 Km/h (43 mph)
U0129
Skid control ECU communication error
Amount of power assist remains constant at speed of 70 Km/h (43 mph)
-
Extremely high temperature in ECU
Assist force restricted until normal ECU temperature recovers
-
Power source voltage drop
Assist force suspended until voltage recovers
  1. *1: w/o ABS

HINT:
The amount of power assist may be decreased to prevent the motor and ECUs from overheating if the steering wheel is continuously turned when the vehicle is either stopped or driven at a low speed, or if the steering wheel is kept at either full lock position for a long time. In such cases, the amount of power assist returns to normal if the steering wheel is not turned for approximately 10 minutes with the engine idling.