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); DTC C1464/31: Front Speed Sensor RH Circuit; DTC C1465/32: Front Speed Sensor LH Circuit: Description
The speed sensor detects wheel speed and sends the appropriate signals to the skid control ECU. These signals are used for ABS control.
DTCs C1271/71 and C1272/72 can be cleared when the speed sensor sends a wheel speed signal or when Test Mode ends. DTCs C1271/71 and C1272/72 are output only in Test Mode.
| DTC Code | INF Code | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| C1271/71 C1272/72 |
- | Detected only during Test Mode. |
|
| C1464/31 | 501 | While driving at 10 km/h (6 mph) or more, speed sensor output from one or two wheels is lower than that from other wheels for 15 seconds or more. |
|
| ↑ | 502 | A malfunction occurs in 2 or more wheels. | ↑ |
| ↑ | 503 | An open is detected in the speed sensor signal circuit for 0.05 seconds or more. |
|
| ↑ | 504 | Instantaneous interruption of sensor signal from the malfunctioning wheel occurs 255 times or more. |
|
| ↑ | 506 | When VM1 voltage is 8.6 V or more, sensor supply voltage drops for 0.5 seconds or more. |
|
| ↑ | 507 | While driving at 10 km/h (6 mph) or more, speed sensor output from one wheel is 0 km/h (0 mph) for 1 second or more. |
|
| ↑ | 508 | When BI or BS terminal voltage is 8.6 V or more, sensor voltage drops for 60 seconds or more. |
|
| C1465/32 | 511 | While driving at 10 km/h (6 mph) or more, speed sensor output from one or two wheels is lower than that from other wheels for 15 seconds or more. |
|
| ↑ | 512 | A malfunction occurs in 2 or more wheels. | ↑ |
| ↑ | 513 | An open is detected in the speed sensor signal circuit for 0.05 seconds or more. |
|
| ↑ | 514 | Instantaneous interruption of sensor signal from the malfunctioning wheel occurs 255 times or more. |
|
| ↑ | 516 | When VM1 voltage is 8.6 V or more, sensor supply voltage drops for 0.5 seconds or more. |
|
| ↑ | 517 | While driving at 10 km/h (6 mph) or more, speed sensor output from one wheel is 0 km/h (0 mph) for 1 second or more. |
|
| ↑ | 518 | When BI or BS terminal voltage is 8.6 V or more, sensor voltage drops for 60 seconds or more. |
|
HINT:
- DTCs C1464/31 and C1271/71 are for the front speed sensor RH.
- DTCs C1465/32 and C1272/72 are for the front speed sensor LH.