P0722

DTC P0722: Problem in Output Shaft (Countershaft) Speed Sensor Circuit (No Signal input)

2006 Model

NOTE:
^ Record all freeze data and review General Troubleshooting Information before you troubleshoot.
^ This code is caused by an electrical circuit problem and cannot be caused by a mechanical problem in the transmission.

1. Clear the DTC with the HDS.
2. Raise the front of the vehicle, make sure it is securely supported, and allow the front wheels to rotate freely.
3. Start the engine, disable the VSA by pressing the VSA OFF switch, run the vehicle in the D position with engine speed 2,000 rpm or higher for more than 10 seconds, then slow down and stop the wheels.
4. Monitor the OBD status for P0722 with the DTC Monitor Tool in DTCs/Freeze Data in A/T Mode Menu for a pass/fail.
Does the result indicate FAILED?
YES - Go to step 5.
NO - If the tester indicates PASSED, intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the output shaft (countershaft) speed sensor and PCM. If the tester indicates NOT COMPLETED, return to step 3 and recheck.

5. Turn the ignition switch OFF.
6. Jump the SCS line with the HDS.
7. Disconnect PCM connectors A (31P) and B (24P), and output shaft (countershaft) speed sensor connector.





8. Check for continuity between PCM connector terminals A3 and body ground, and between B15 and body ground.
Is there continuity?
YES - Go to Step 9.
NO - Repair open in the wires between PCM connector terminals A3, B15, and ground (G101, G102), or repair poor ground (G101, G102), then go to step 29.

9. Connect PCM connectors A (31P) and B (24P).
10. Turn the ignition switch ON (II).





11. Measure the voltage between output shaft (countershaft) speed sensor connector terminal No. 1 and body ground.
Is thereabout 5 V?
YES - Go to Step 12.
NO - Go to step 24.

12. Turn the ignition switch OFF.
13. Disconnect PCM connector B (24P).





14. Check for continuity between output shaft (countershaft) speed sensor connector terminal No. 2 and body ground.
Is there continuity?
YES - Repair short to ground in the wire between PCM connector terminal B19 and output shaft (countershaft) speed sensor, then go to step 29.
NO - Go to step 15.

15. Disconnect PCM connector C (22P).





16. Check for continuity between output shaft (countershaft) speed sensor connector terminal No. 3 and PCM connector terminal C4.
Is there continuity?
YES - Go to step 17.
NO - Repair open in the wire between the output shaft (countershaft) speed sensor connector and PCM connector terminal C4, then go to step 29.

17. Connect PCM connector B (24P) and C (22P).
18. Turn the ignition switch ON (II).





19. Measure the voltage between output shaft (countershaft) speed sensor connector terminals No. 2 and No. 3.
Is thereabout 5 V/E0m?
YES - Go to step 20.
NO - Go to step 28.

20. Connect the output shaft (countershaft) speed sensor connector.





21. Measure the voltage between PCM connector terminals B19 and A3.
Is the voltage 0 V or about 5 V?
YES - Go to step 22.
NO - Replace the output shaft (countershaft) speed sensor, then go to step 29.

22. Shift to the P position. Start the engine, and let it idle.





23. Shift to the D position, and measure the voltage between PCM connector terminals B19 and A3.
Is there 1.5 - 3.5 V?
YES - Update the PCM if it does not have the latest software, or substitute a known-good PCM, than recheck. If the symptom/indication goes away with a known-good PCM, replace the original PCM.
NO - Replace the output shaft (countershaft) speed sensor, then go to step 29.





24. Measure the voltage between PCM connector terminals C6 and A3.
Is there about 5 V?
YES - Repair open in the wire between PCM connector terminal C6 and the output shaft (countershaft) speed sensor, then go to step 29.
NO - Go to step 25.

25. Turn the ignition switch OFF.
26. Disconnect PCM connector C (22P).





27. Check for continuity between PCM connector terminal C6 and body ground.
Is there continuity?
YES - Repair short to ground in the wire between PCM connector terminal C6 and the output shaft (countershaft) speed sensor, then go to step 29.
NO - Check for loose or poor connections at PCM connector terminal C6. If the connection is OK, update the PCM if it does not have the latest software, or substitute a known-good PCM, then recheck. If the symptom/indication goes away with a known-good PCM, replace the original PCM.





28. Measure the voltage between PCM connector terminals B19 and A3.
Is thereabout 5 V?
YES - Repair open in the wire between PCM connector terminal B19 and the output shaft (countershaft) speed sensor, then go to step 29.
NO - Check for loose or poor connections at PCM connector terminal B19. If the connection is OK, update the PCM if it does not have the latest software, or substitute a known-good PCM, then recheck. If the symptom/indication goes away with a known-good PCM, replace the original PCM.

29. Clear the DTC with the HDS.
30. Test-drive the vehicle for several minutes in the D position through all five gears.
31. Monitor the OBD status for P0722 with the DTC Monitor Tool in DTCs/Freeze Data in A/T Mode Menu for a pass/fail.
Does the result indicate PASSED?
YES - Troubleshooting is complete.
NO - Return to step 1 and recheck.