1. DTC P0720 description
The output speed sensor is installed on the right side of the transmission case. The output speed sensor is a Hall element type sensor that generates signals for AC voltage based on the rotation speed of the parking lock gear installed to the rear planetary gear assembly. The parking lock gear generates 12 pulses by 1 rotation. The TCM detects the vehicle speed using the output speed sensor signal. The TCM sets the DTC if the output speed signal is not input.
2. Condition for setting DTC P0720
Condition for running the DTC
- The ignition switch is ON.
- The ignition voltage is 9.0 to 16.0 V.
Condition for setting the DTC
- The TCM detects an output speed sensor malfunction.
3. Action taken when DTC P0720 sets
- The TCM flashes the check trans warning light. Refer to Action taken when DTC sets - Type A.
Refer to "55.Transmission Control 5A.Troubleshooting(AWR6B45) DTC type definitions".
- The TCM calculates the output speed based on the turbine speed and current gear position.
The following applies only when a speedometer signal malfunction is detected at the same time.
- The TCM inhibits shifting to the reverse gear.
- The TCM inhibits the shift timing control.
- The TCM inhibits the lock-up timing control.
- The TCM inhibits the slip lock-up control.
- The TCM inhibits the garage control.
- The TCM inhibits the self-learning control.
- The TCM inhibits the engine torque control.
- The TCM inhibits the skip gear shift control.
- If the DTC is set in the reverse gear, the current gear position is retained.
- If the DTC is set while running, the current gear position is retained. If a solenoid malfunction is found while running in 6th gear, the gear is shifted to 5th.
- When the vehicle is stopped, the gear is shifted to 3rd.
4. Condition for clearing DTC P0720
- Refer to Condition for clearing the MIL, check trans warning light/DTC - Type A or Type B.
Refer to "55.Transmission Control 5A.Troubleshooting(AWR6B45) DTC type definitions".