DTC Troubleshooting

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

NOTE:
- Before you troubleshoot, record all freeze data and any on-board snapshot, and review General Troubleshooting Information.
- 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 vehicle, make sure it is securely supported, and allow all four wheels to rotate freely.
3. Start the engine, disable the VSA by pressing the VSA OFF button, run the vehicle in the D position, and hold the vehicle at speeds over 2,000 rpm for more than 10 seconds. Slow down and stop the wheels.
4. Monitor the OBD STATUS for P0722 in the DTCs MENU with the HDS.

Does the screen indicate FAILED?

YES - Go to step 5.

NO - If the screen indicates PASSED, intermittent failure, the system is OK at this time. Check for loose or poor connections at the PCM and the output shaft (countershaft) speed sensor connectors. If the screen 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 the 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 an open in the wires between PCM connector terminals A3, B15, and ground (G101, G102), or repair a poor ground (G101, G102), then go to step 31.

9. Connect PCM connectors A (31P) and B (24P).
10. Turn the ignition switch ON (II).
11. Measure voltage between output shaft (countershaft) speed sensor connector terminal No. 1 and body ground.





Is there about 5 V?

YES - Go to step 12.

NO - Go to step 25.

12. Turn the ignition switch OFF.
13. Jump the SCS line with the HDS.
14. Disconnect PCM connector B (24P).
15. Check for continuity between output shaft (countershaft) speed sensor connector terminal No. 2 and body ground.





Is there continuity?

YES - Repair a short to ground in the wire between PCM connector terminal B19 and the output shaft (countershaft) speed sensor connector, then go to step 31.

NO - Go to step 16.

16. Disconnect PCM connector C (22P).
17. Check for continuity between PCM connector terminal C4 and output shaft (countershaft) speed sensor connector terminal No. 3.





Is there continuity?

YES - Go to step 18.

NO - Repair an open in the wire between the output shaft (countershaft) speed sensor connector and PCM connector terminal C4, then go to step 31.

18. Connect PCM connectors B (24P) and C (22P).
19. Turn the ignition switch ON (II).
20. Measure voltage between output shaft (countershaft) speed sensor connector terminals No. 2 and No. 3.





Is there about 5 V?

YES - Go to step 21.

NO - Go to step 30.

21. Connect the output shaft (countershaft) speed sensor connector.
22. Measure voltage between PCM connector terminals B19 and A3 or B15.





Is the voltage 0 V or about 5 V?

YES - Go to step 23.

NO - Replace the output shaft (countershaft) speed sensor, then go to step 31.

23. Start the engine, run the vehicle in the D position, and hold the vehicle at engine speeds 2,000 rpm.
24. Measure voltage between PCM connector terminals B19 and A3 or B15.





Is there 1.5 - 3.5 V?

YES - Go to step 37.

NO - Replace the output shaft (countershaft) speed sensor, then go to step 31.

25. Measure voltage between PCM connector terminals C6 and A3 or B15.





Is there about 5 V?

YES - Repair an open in the wire between PCM connector terminal C6 and the output shaft (countershaft) speed sensor, then go to step 31.

NO - Go to step 26.

26. Turn the ignition switch OFF.
27. Jump the SCS line with the HDS.
28. Disconnect PCM connector C (22P).
29. Check for continuity between PCM connector terminal C6 and body ground.





Is there continuity?

YES - Repair a short to body ground in the wire between PCM connector terminal C6 and the output shaft (countershaft) speed sensor, then go to step 31.

NO - Go to step 37.

30. Measure voltage between PCM connector terminals B19 and A3 or B15.





Is there about 5 V?

YES - Repair an open in the wire between PCM connector terminal B19 and the output shaft (countershaft) speed sensor, then go to step 31.

NO - Go to step 37.

31. Reconnect all connectors.
32. Turn the ignition switch ON (II).
33. Clear the DTC with the HDS.
34. Start the engine, disable the VSA by pressing the VSA OFF button, run the vehicle in the D position with the engine speed 2,000 rpm or higher for more than 10 seconds, then slow down and stop the wheels.
35. Check for Temporary DTCs or DTCs with the HDS.

Is DTC P0722 indicated?

YES - Check for poor connections or loose terminals at the output shaft (countershaft) speed sensor and the PCM, then go to step 1.

NO - Go to step 36.

36. Monitor the OBD STATUS for P0722 in the DTCs MENU with the HDS.

Does the screen indicate PASSED?

YES - Troubleshooting is complete.

NO - Return to step 1 and recheck.

37. Update the PCM if it does not have the latest software, or substitute a known-good PCM.
38. Start the engine, disable the VSA by pressing the VSA OFF button, run the vehicle in the D position with the engine speed 2,000 rpm or higher for more than 10 seconds, then slow down and stop the wheels.
39. Check for Temporary DTCs or DTCs with the HDS.

Is DTC P0722 indicated?

YES - Check for poor connections or loose terminals at the output shaft (countershaft) speed sensor and the PCM. If the PCM was updated, substitute a known-good PCM, then go to step 38. If the PCM was substituted, go to step 1.

NO - Go to step 40.

40. Monitor the OBD STATUS for P0722 in the DTCs MENU with the HDS.

Does the screen indicate PASSED?

YES - Troubleshooting is complete.

NO - Return to step 1 and recheck.