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 control system. The front rotors have 48 serrations, respectively.
When the rotors rotate, the magnetic field emitted by the permanent magnet in the speed sensor generates an AC voltage.
Since the frequency of this AC voltage changes in direct proportion to the speed of the rotor, the frequency is used by the ECU to detect the speed of each wheel.
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.
DIAGNOSTIC TROUBLE CODE 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. |
|
| ↑ | 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. |
|
| ↑ | 256 | Rotating direction of each wheel changes 7 times with the ignition switch on while driving at 6 mph (10 km/h) or more. |
|
| ↑ | 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 ignition switch on while reversing at 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. |
|
| 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. |
|
| ↑ | 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. |
|
| ↑ | 269 | Rotating direction of each wheel changes 7 times with the ignition switch on while driving at 6 mph (10 km/h) or more. |
|
| ↑ | 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 ignition switch on while reversing at 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. |
|
HINT:
- DTC C0200/31 is for the right front speed sensor.
- DTC C0205/32 is for the left front speed sensor.
- The BRAKE warning light comes on when speed sensor malfunctions are detected in two or more wheels.