Troubleshooting

DTC P0722 Output Speed Sensor Circuit No Signal

CIRCUIT DESCRIPTION

DTC Detection Condition:

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. If the speed sensor SP2 malfunctions, the ECM uses input signals from the speed sensor NT as a back-up signal.

Wiring Diagram:

Step 1 - 2:

INSPECTION PROCEDURE