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 [08/2014 - ]: Description
Each speed sensor detects the wheel speed and sends the appropriate signals to the skid control ECU (brake booster with master cylinder assembly). These signals are used for ABS control.
DTCs C1271/71 and C1272/72 are 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 No. | INF Code | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| 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 VM1 voltage is 8.6 V or more, sensor supply 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 VM1 voltage is 8.6 V or more, sensor supply voltage drops for 60 seconds or more. |
|
| C1271/71 C1272/72 |
- | Detected only during Test Mode. |
|
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.