P0722
DTC P0722 OUTPUT SPEED SENSOR CIRCUIT - NO SIGNALCOMPONENT LOCATION:
GENERAL DESCRIPTION
The Output Speed Sensor outputs pulse-signals according to the revolutions of the output shaft of the transmission. The Output Speed Sensor is installed inside transmission. This value, together with the throttle position data, is mainly used to decide the optimum gear position.
DTC DESCRIPTION
The TCM sets this code if the calculated value of the pulse-signal is noticeably different from the value calculated, using the Vehicle Speed Sensor output. The TCM will initiate the fail safe function if this code is detected.
DTC DETECTING CONDITION:
SCHEMATIC DIAGRAM:
MONITOR SCANTOOL DATA
1. Connect scan tool to data link connector (DLC).
2. Engine "ON".
3. Monitor the "OUTPUT SPEED SENSOR" parameter on the Scantool.
4. Driving at speed of over 19 Mile/h (30 Km/h).
Specification: Increasing Gradually
5. Does "output speed sensor" follow the reference data?
YES
- Fault is intermittent caused by poor contact in the sensor's and/or TCM (PCM)'s connector or was repaired and TCM (PCM) memory was not cleared. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration or damage. Repair or replace as necessary and go to "Verification of Vehicle Repair" procedure.
NO
- Go to "Terminal and connector inspection" procedure.
TERMINAL AND CONNECTOR INSPECTION
1. Many malfunctions in the electrical system may be caused from poor harness and terminal condition. These faults can be caused by interference from other electrical systems and mechanical or chemical damage.
2. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage.
3. Has a problem been found?
YES
- Repair as necessary and go to "Verification of vehicle repair" procedure.
NO
- Go to "Signal circuit inspection" procedure.
SIGNAL CIRCUIT INSPECTION
1. Engine "OFF" IG KEY "OFF".
2. Remove the TCU.
3. Perform the continuity test between "OUTPUT SPEED SENSOR" sensor terminal and-chassis ground.
Specification: Not continuity
4. Is resistance within specifications?
YES
- Substitute with a known-good PCM/TCM and check for proper operation. If the problem is corrected, replace PCM/TCM as necessary and then go to "Verification of Vehicle Repair" procedure.
NO
- Replace "TRANSAXLE FLUID TEMPERATURE SENSOR" as necessary and Go to "Verification of Vehicle Repair" procedure.
NOTE: When replacing the TCU, must perform the N position learning and the Initial learning.
VERIFICATION OF VEHICLE REPAIR
After a repair, it is essential to verify that the fault has been corrected.
1. Connect scan tool and select "Diagnostic Trouble Codes (DTCs)" mode.
2. Using a scan tool, Clear DTC.
3. Operate the vehicle within DTC Enable conditions in General information.
4. Is resistance within specification?
YES
- Go to the applicable troubleshooting procedure.
NO
- System performing to specification at this time.