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 CHART
| DTC Code | Information Code | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| C0200/31 | 251 | At a vehicle speed of 10 km/h (6 mph) or more, an open or short in the sensor signal circuit of the abnormal wheel continues for 1 second or more. |
|
| ↑ | 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 2.5 kHz or higher is input. |
|
| ↑ | 256 | With the engine switch on (IG) and the vehicle speed at 10 km/h (6 mph) or more, the condition that the rotating direction of each wheel changes within 6 milliseconds occurs 7 times. |
|
| ↑ | 257 | Rotating direction of one of the wheels is not the same as that of the other wheels for 1 second while driving at 30 km/h (18 mph) 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 30 km/h (18 mph) 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 at 3 km/h (1.8 mph). | ↑ |
| ↑ | 260 | At a vehicle speed of 10 km/h (6 mph) 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 100 km/h (60 mph) 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. |
|
| C0205/32 | 264 | At a vehicle speed of 10 km/h (6 mph) or more, an open or short in the sensor signal circuit of the abnormal wheel continues for 1 second or more. |
|
| ↑ | 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 2.5 kHz or higher is input. |
|
| ↑ | 269 | With the engine switch on (IG) and the vehicle speed at 10 km/h (6 mph) or more, the condition that the rotating direction of each wheel changes within 6 milliseconds occurs 7 times. |
|
| ↑ | 270 | Rotating direction of one of the wheels is not the same as that of the other wheels for 1 second while driving at 30 km/h (18 mph) 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 30 km/h (18 mph) 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 at 3 km/h (1.8 mph). | ↑ |
| ↑ | 273 | At a vehicle speed of 10 km/h (6 mph) 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 100 km/h (60 mph) 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. |
|
| C1271/71 C1272/72 |
- | Detected only during test mode. |
|
HINT:
- DTC C0200/31 is for the front speed sensor RH.
- DTC C0205/32 is for the front speed sensor LH.