A/T Controls - MIL ON/DTC's P0717/P0721 and P0722 Set
Group TRANSAXLENumber 10-AT-005
Date: FEBRUARY, 2010
Model 2010-TUCSON, 2010-SANTA FE, 2011- SONATA
Subject
ATA INPUT AND OUTPUT SPEED SENSOR DTC P0717, P0721 & P0722
DESCRIPTION:
Incorrect operation of the input and output speed sensors may result in the following symptoms:
^ Check Engine Light illuminated
^ Transaxle held in 3rd gear Fail-Safe
^ Diagnostic Trouble Codes P0717, P0721 or P0722
NOTE:
Do NOT replace the transaxle for input and output speed sensor codes listed above. Instead, follow the repair procedure shown below.
APPLICABLE VEHICLES
PARTS INFORMATION
REPAIR PROCEDURE:
1. Using a GDS, check for DTC in "Automatic Transaxle" menu. Record the DTC and description.
2. From the GDS, select the following parameters. Drive the vehicle and monitor the sensors.
^ Vehicle and A/T menu
^ "Current Data"
^ Input speed and output speed sensor.
^ If the sensors show:
^ Continuous and changing output with changes in vehicle speed, the wiring currently has no open/short circuits. Go to Step 4.
^ No continuous and changing output, go to Step 3.
3. Check the wiring harness between the PCM and transaxle visually for a damaged wire or a short circuit to ground. Check for a damaged pin or pin not fully inserted in the connector. If so, repair or replace the ECM control harness between the PCM and transmission.
4. Refer to the DTC recorded in Step 1 and follow the repair procedure shown below:
SERVICE PROCEDURE:
5. Remove the battery and the battery tray.
6. Remove the under cover under the transmission.
7. Drain the radiator. Remove the lower radiator hose from the radiator.
8. Drain the ATF.
9. Use a screwdriver to release the tab and remove the solenoid connector on top of the case.
10. Remove the bolt that secures the retainer and push the connector into the transmission.
11. Remove the bolts that secure the valve body cover and remove the cover.
CAUTION:
Use a rubber hammer to tap the valve body cover on a corner until the cover is loose.
12. Use a small screwdriver to pry the connector from the oil temperature sensor.
13. Remove three bolts to the solenoid valve connector.
14. Pull the solenoid connector outward and move the connector out of position.
15. Remove the bolt that secures the detent spring and remove the spring.
16. Remove 8 bolts in the order shown and remove the valve body.
17. Use a screwdriver to depress the locking tab and pull outward on the connector to the input and output speed sensor.
18. Remove two bolts that secure the valve body harness to the case.
19. Pull the connector downward out of the case.
20. Install a new harness and insert the connector into the case.
21. Attach the retainer and bolt that secures the connector in the case. Install the bolts.
Torque: 6-7 lb.ft (0.9-1.0 kgf.m)
22. Remove two bolts that secure the input and output speed sensor assembly and remove the sensors.
23. Install a new input/output speed sensor in the reverse order of assembly and tighten the bolts to specification.
Torque: 6-7 lb.ft (0.9-1.0 kgf.m)
24. Reconnect the input and output speed sensor connector to the harness.
25. Confirm the o-rings are installed correctly in the case.
26. Align the manual shaft to the shift lever and install the valve body.
27. Install the valve body bolts and torque to specification in the order shown.
Torque: 6-7 lb.ft (0.9-1.0 kgf.m)
28. Reconnect the solenoid harness to the solenoids and oil temperature sensor.
29. Install the bolts to the solenoid harness connector and torque to specification.
Torque: 7.2-8.7 lb-ft (1.0-1.2 kgf.m)
30. Apply Permatex Ultra Gray Sealer or Hyundai Ultra Gray Gasket Sealer, P/N 00231-13800, to the valve body cover and reinstall the cover. Tighten the bolts to specification.
Torque: 7.2-8.7 lb-ft (1.0-1.2 kgf.m)
31. Reinstall the lower radiator hose and add ethylene glycol engine coolant to the radiator and check the level according to the appropriate shop manual, "Engine" Section.
32. Add approximately five quarts of Hyundai SPH-IV ATF (P/N 00232-19045) and check the level with the engine idling in Neutral. Recheck the ATF level when the ATF is at normal operating temperature (122-140°F, 50-60°C) according to TSB 10-AT-001-1.
33. Clear the codes and test drive the vehicle for two drive cycles (two key-on to key-off driving cycles, including 1-2-3-4-5-6 upshifts and 6-5-4-3-2-1 downshifts). If the DTC's return, perform the repairs shown above.
WARRANTY INFORMATION