If abnormal putput Speed Sensor signal is detected, TCM sets DTC P0721.
Item | Detecting Condition | Possible Cause |
DTC Strategy |
•
Voltage Monitoring | 1. Poor Connector Connection 2. Defected output Speed Sensor Circuit 3. Defected output Speed Sensor |
Enable Conditions |
•
Normal Battery Voltage
•
Engine Speed higher than 400 RPM
•
Vehicle Speed higher than 50 km/h(Approx. 31 mph)
•
Lever Position in "D" or "Sports" (Forward Gear) | |
Threshold value |
•
Vehicle speed equivalent to output speed is less then vehicle speed * 0.3 or higher than vehicle speed * 1.7 (ex. Less than 15 km/h(Approx. 9 mph) or higher than 85 km/h(Approx. 53 mph) when vehicle speed is 50 km/h(Approx. 31mph | |
Detecting Time |
•
Limp home mode (4th gear hold, manual shift from 2nd to 4th gear is allowed) | |
Fail safe |
•
4 Sec. | |
MIL ON Condition |
•
2nd Driving Cycle |
