EPS(MDPS=Motor Driving Power Steering) is designed to provide directional control and smooth feeling to driver when driver operates steering wheel. There is a function to detect rotation speed and direction of steering wheel in Torque Sensor. Rotation speed and direction signals are used for "damper" and "return" control, "assist" control.
If there is an error in steering signals, the EPS(MDPS=Motor Driving Power Steering) unit sets DTC C1259.
Item | Detecting Condition | Possible cause |
DTC Strategy |
•
Steering angle signal | 1. Open or short in the power harness 2. Open/Short in the ground harness 3. Steering angle Sensor 4. EPS(MDPS) CM 5. ASP Setting error |
Enable conditions |
•
If the voltage of battery is normal | |
Threshold value |
•
If the signal of steering angle are out of a normal range | |
Fail Safe |
•
Normal assistance |
