DTC C0051-25, C0051-62, C0051-64, C0051-67, C0051-84, C0051-85 Or C0051-86: Electric Power Steering (EPS) Control Module (Steering Angle Signal) [DSC HU/Cm]: Outline
WARNING: This page is about a different car, the 2020 Mazda CX-30. However, it is still accessible from the selected car via links, so may be relevant.
| System malfunction location |
Electric Power Steering (EPS) control module (steering angle signal) |
| Detection condition |
- C0051:25
- While driving, the DSC HU/CM detects a sudden change in the steering angle sensor signal.
- C0051:62
- While driving, the DSC HU/CM detects that the difference between the steering angle calculated by the yaw rate, lateral-G, and wheel speed and the steering angle signal is the specification or more.
- C0051:64
- While driving, the DSC HU/CM determines that there is a steering angle malfunction as a result of comparing the yaw rate, lateral-G, and the steering angle.
- C0051:67
- The DSC HU/CM detects that the steering angle neutral position cannot be estimated for the specified time.
NOTE:
- Each time the ignition is switched ON, the DSC HU/CM calculates the steering angle neutral position based on the signals from each sensor and each module.
- If the vehicle is driven as follows just after the engine is started, DTC C0051:67 may be output.
- Vehicle is accelerated rapidly while being steered right or left
- Vehicle is driven on abnormal road surface such as banked road
- Vehicle is driven on continuously curved road such as mountain road
- If the DTC is a past malfunction during DTC inspection, it does not indicate a vehicle malfunction.
- C0051:84
- The DSC HU/CM detects that the steering angle signal received from the Electric Power Steering (EPS) control module decreases below the lower limit of the specification.
- C0051:85
- The DSC HU/CM detects that the steering angle signal received from the Electric Power Steering (EPS) control module increases above the upper limit of the specification.
- C0051:86
- While driving in DSC OFF mode, the DSC HU/CM detects that the difference between the steering angle calculated from yaw rate, lateral-G, and the wheel speed and the steering angle signal is the specification or more.
|
| Fail-safe |
Refer to "DTC Table" and "Fail-safe Function Malfunction Contents Table". (See DTC TABLE [DSC HU/CM (US)] .) |
| Possible cause |
- Vehicle is accelerated rapidly while being steered right or left
- Vehicle is driven on abnormal road surface such as banked road
- Vehicle is driven on continuously curved road such as mountain road
- Improper installation or positioning of the Electric Power Steering (EPS) control module
- Electric Power Steering (EPS) control module malfunction
- Connector or terminal malfunction
- DSC HU/CM malfunction
|
| System wiring diagram |
Not applicable |
| Connector diagram |
Not applicable |