DTC P0721:00 [FW6A-EL]


id050225904100

DTC P0721:00

Output shaft speed sensor/sensor output range malfunction

DETECTION CONDITION
•  Under the following condition, the output shaft speed is 13,560 rpm or more in forward or 2,000 rpm or more in reverse for a continuous 1 s:
―  Battery voltage is 8 V or more.
FAIL-SAFE FUNCTION
•  Inhibits learning control.
•  Inhibits manual mode.
•  Inhibits neutral idle control.
•  Inhibits i-stop control.
•  Inhibits AAS.
POSSIBLE CAUSE
•  Output shaft speed sensor malfunction
SYSTEM WIRING DIAGRAM
Not applicable

Diagnostic procedure

STEP

INSPECTION

ACTION

1
VERIFY DSC HU/CM DTC
•  Perform the DSC HU/CM DTC inspection using the M-MDS.
•  Are any DTCs present?
Yes
Go to the applicable DTC inspection.
No
Go to the next step.
2
VERIFY INSTRUMENT CLUSTER REPAIR HISTORY
•  Does the instrument cluster have a record of replacement?
Yes
Perform the instrument cluster configuration, then go to Step 6.
No
Go to the next step.
3
VERIFY AUTOMATIC TRANSMISSION REPAIR HISTORY
•  Does the automatic transmission (with control valve body) have a record of replacement?
Yes
Perform the TCM configuration.
No
Go to the next step.
4
RECORD VEHICLE STATUS WHEN DTC WAS DETECTED TO UTILIZE WITH REPEATABILITY VERIFICATION
Note
•  Recording can be facilitated using the screen capture of the PC function.
•  Record the freeze frame data/snap shot data.
Go to the next step.
5
VERIFY RELATED SERVICE INFORMATION AVAILABILITY
•  Verify related Service Information availability.
•  Is any related Service Information available?
Yes
Perform repair or diagnosis according to the available Service Information.
•  If the vehicle is not repaired, replace the control valve body.
Go to the next step.
No
Replace the control valve body, then go to the next step.
6
VERIFY DTC TROUBLESHOOTING COMPLETED
•  Clear the DTC using the M-MDS.
•  Perform the following procedure to ensure that the DTC has been resolved:
1.  Drive the vehicle for 1 s or more under the following condition:
•  Vehicle speed: 30 km/h {19 mph} or more
•  Perform the DTC inspection using the M-MDS.
•  Are any DTCs present?
Yes
Go to the applicable DTC inspection.
No
DTC troubleshooting completed.