EPS(MDPS=Motor Driving Power Steering)ECU receives torque and rotation speed of steering wheel from torque sensor.
The EPS ECU uses a torque sensor as it's main input for determining the amount of steering assists. The input and output shafts are separated by a torsion bar, where the torque sensor is located. The sensor consists of a two detecting plates. Detecting plate 1 is fixed to the output shaft, detecting plate 2 is fixed to the input shaft. As torque is applied to the steering column shaft the alignment of the teeth between detecting plate 1 and 2 changes. The EPS ECU recognizes this change.
The EPS(MDPS=Motor Driving Power Steering)ECU sets this code if torque sensor can't calculate torque and rotation speed normally due to open or short in torque sensor circuit or discordance between 2 sensing element signal.
The EPS ECU turns on warning lamp and stops assist control.
Item | Detecting Condition | Possible cause |
DTC Strategy |
•
Chenk signal & Compare 2 sensing element signal | 1. Poor connection in Torque sensor 2. Faulty Torque sensor |
Enable conditions |
•
IG ON | |
Threshold value |
•
Signal error or discordance between 2 sensing element signal | |
Fail Safe |
•
EPS warning lamp "ON", EPS control is inhibited | |
Restoration conditions |
•
Normal condition after IG on → off |
