P0722

DTC P0722: Output Speed Sensor Circuit No Signal





Wiring Diagram

DTC Detecting Condition and Trouble Area

DTC DETECTING CONDITION
With "4WD LOW" switch OFF, no output speed sensor signal is inputted while engine running at higher than specified engine speed with "D" range. (1 driving cycle detection logic)

TROUBLE AREA
^ A/T output speed sensor or its circuit
^ PCM

DTC Confirmation Procedure

WARNING:
^ When performing a road test, select a place where there is no traffic or possibility of a traffic accident and be very careful during testing to avoid occurrence of an accident.
^ Road test should be carried out with 2 persons, a driver and a tester, on a level road.

1) Connect scan tool to DLC with ignition switch OFF.
2) Clear DTC, pending DTC and freeze frame data in PCM memory by using scan tool.
3) Start engine and shift transfer lever to "2H" or "4H" range.
4) Drive vehicle at, 40 km/h (25 mph) or more for longer than 10 seconds (or higher than 3500 rpm engine speed with "D" range for longer than 10 seconds)
5) Stop vehicle and check pending DTC and DTC by using scan tool.





DTC Troubleshooting

Reference
Connect oscilloscope between "C51-1-23" (+) and "C51-1-22" (-) of PCM connector connected to PCM and check output speed sensor signal.





Oscilloscope waveforms at about 40 km/h (25 mph)