DTC C1237: Speed Sensor Rotor Faulty [06/2017 - 10/2020]: Description
The skid control ECU (brake actuator assembly) measures the speed of each wheel by receiving signals from each speed sensor.
These signals are used for recognizing that all four wheels are operating properly.
Therefore, signals from all wheels must be equal.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| C1237 | Speed Sensor Rotor Faulty | Any of the following is detected:
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DTC DETECTION CONDITIONS: C1237
| Vehicle Condition | |||||
|---|---|---|---|---|---|
| Pattern 1 | Pattern 2 | Pattern 3 | Pattern 4 | ||
| Diagnosis Condition | - | - | - | - | - |
| Malfunction Status | Discrepancy among four wheel speed sensor output. | ◦ | - | - | - |
| Abnormal pulse signals from 3 or more sensors. | - | ◦ | - | - | |
| Continuous ABS control is performed. | - | - | ◦ | - | |
| VSC control is performed. | - | - | - | ◦ | |
| Detection Time | - | - | 60 seconds or more | 5 seconds or more | |
| Number of Trips | 1 trip | 1 trip | 1 trip | 1 trip | |
HINT:
DTC will be output when conditions for either of the patterns in the table above are met.