DTC C0200/31 Front Speed Sensor RH Circuit; DTC C0205/32 Front Speed Sensor LH Circuit; DTC C1271/71 Low Output Signal of Front Speed Sensor RH (Test Mode DTC); DTC C1272/72 Low Output Signal of Front Speed Sensor LH (Test Mode DTC): Description
The speed sensor detects wheel speed and sends the appropriate signals to the ECU. These signals are used to control the ABS system. This speed sensor contains a sensor IC, which consists of 2 MREs (Magnetic Resistance Element). The speed sensor rotor, which consists of 48 sets of N and S poles that are arranged in a circle, is integrated with the inner race of the hub bearing.
To detect the rotation direction, the output waves are used to determine the relationship of the pulses that are generated by 2 MREs. Upon receiving this signal, the sensor IC outputs a forward or backward wave to the ECU.
DTCs C1271/71 and C1272/72 can be deleted when the speed sensor sends a vehicle speed signal or the Test Mode ends. DTCs C1271/71 and C1272/72 are output only in the Test Mode.
DTC DETECTION CONDITION AND TROUBLE AREA CHART
| DTC No. | INF Code | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| C0200/31 | 251 | At a vehicle speed of 6 mph (10 km/h) or more, an open or short in the sensor signal circuit of the abnormal wheel continues for 1 second or more. |
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| 252 | More than 1 wheel is abnormal. | ||
| 253 | Speed sensor signal circuit is open for 0.5 seconds or more. | ||
| 254 | Momentary interruption of sensor signal from the abnormal wheel occurs 255 times or more. | ||
| 255 | Frequency of 2.7 kHz or higher is input. |
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| 256 | Rotating direction of each wheel changes 7 times with the engine switch on (IG) while driving at 6 mph (10 km/ h) or more. |
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| 257 | Rotating direction of one of the wheels is not the same as that of the other wheels for 1 second while driving at 18 mph (30 km/h) or more. | ||
| 258 | Rotating direction of one of the wheels is not detected normally, and the rotating direction of each of the other wheels is not the same for 1 second while driving at 18 mph (30 km/h) or more. | ||
| 259 | 3 of the wheel sensors detect normal reversing signals, and the other wheel sensor detects malfunction signals 75 times with the engine switch on (IG) while reversing 1.8 mph (3 km/h). | ||
| 260 | At a vehicle speed of 6 mph (10 km/h) or more, the output from the vehicle speed sensor is halved for 5 seconds or more. | ||
| 261 | Reversing signal is output for 1 second or more while driving at 60 mph (100 km/h) or more. | ||
| 262 | With the voltage of IG1 terminal 9.5 V or more, the sensor power supply voltage decreases for 0.5 seconds or more. |
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| C0205/32 | 264 | At a vehicle speed of 6 mph (10 km/h) or more, an open or short in the sensor signal circuit of the abnormal wheel continues for 1 second or more. |
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| 265 | More than 1 wheel is abnormal. | ||
| 266 | Speed sensor signal circuit is open for 0.5 seconds or more. | ||
| 267 | Momentary interruption of sensor signal from the abnormal wheel occurs 255 times or more. | ||
| 268 | Frequency of 2.7 kHz or higher is input. |
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| 269 | Rotating direction of each wheel changes 7 times with the engine switch on (IG) while driving at 6 mph (10 km/h) or more. |
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| 270 | Rotating direction of one of the wheels is not the same as that of the other wheels for 1 second while driving at 18 mph (30 km/h) or more. | ||
| 271 | Rotating direction of one of the wheels is not detected normally, and the rotating direction of each of the other wheels is not the same for 1 second while driving at 18 mph (30 km/h) or more. | ||
| 272 | 3 of the wheel sensors detect normal reversing signals, and the other wheel sensor detects malfunction signals 75 times with the engine switch on (IG) while reversing 1.8 mph (3 km/h). | ||
| 273 | At a vehicle speed of 6 mph (10 km/h) or more, the output from the vehicle speed sensor is halved for 5 seconds or more. | ||
| 274 | Reversing signal is output for 1 second or more while driving at 60 mph (100 km/h) or more. | ||
| 275 | With the voltage of IG1 terminal 9.5 V or more, the sensor power supply voltage decreases for 0.5 seconds or more. |
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HINT:
- DTC C0200/31 is for the right front speed sensor.
- DTC C0205/32 is for the left front speed sensor.