DTC P0722: Output Speed Sensor Circuit No Signal [08/2015 - 08/2019]: Description
WARNING: This page is about a different variant/trim than selected.
The speed sensor SP2 detects the rotation speed of the transmission output shaft and sends signals to the ECM. The ECM determines the vehicle speed based on these signals. An AC voltage is generated in the speed sensor SP2 coil as the parking gear mounted on the rear planetary gear assembly rotates, and this voltage is sent to the ECM. The parking gear on the rear planetary gear is used as the timing rotor for this sensor.
The gear shift point and lock-up timing are controlled by the ECM based on the signals from this vehicle speed sensor and the throttle position sensor signal.
| DTC Code | DTC Detection Condition | Trouble Area |
|---|---|---|
| P0722 | All conditions are met 500 times or more continuously (2-trip detection logic): (a) No signal from speed sensor SP2 is input to the ECM while 4 pulses of the No. 1 vehicle speed sensor signal are sent. (b) Vehicle speed is 9 km/h (6 mph) or more for at least 5 sec. (c) Park/neutral position switch is OFF. |
|
Reference: Inspect using an oscilloscope.
Check the waveform of the ECM connector.
Standard
| Terminal No. (Symbol) | Tool Setting | Condition | Specified Condition |
|---|---|---|---|
| B38-9 (SP2+) - B38-10 (SP2-) | 2 V/DIV., 20 msec./DIV. | Vehicle speed 20 km/h (12 mph) | Refer to illustration |