DTC Troubleshooting: P0722 (9-3) (A/T)
DTC Troubleshooting: P0722 (9-3)
| DTC P0722: | Problem in Countershaft Speed Sensor Circuit (No Signal Input) |
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 in CLEAR MENU with the Honda PGM Tester or 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, drive the vehicle in the [D] position, and hold the vehicle at speeds over 30 mph (48 km/h) for more than 10 seconds. |
| 4. | Check the OBD STATUS in DTCs MENU for a pass/fail test of code P0722. Did the result fail? YES - Go to 5. NO - Intermittent failure, the system is OK at this time. If the tester indicates NOT COMPLETE, return to step 3 and recheck.n |
| 5. | Turn the ignition switch OFF. |
| 6. | Jump the SCS line with the Honda PGM Tester or HDS. |
| 7. | Disconnect PCM connector A (31P) and countershaft speed sensor connector. |
| 8. | Check for continuity between PCM connector terminals A8 and body ground, and between A9 and body ground. PCM CONNECTOR A (31P)LG2 (BRN/YEL)LG1(BRN/YEL)Wire side of female terminals Is there continuity? YES - Go to 9. NO - Repair open in the wires between PCM connector terminals A8 and ground (G101), between A9 and ground (G101), and repair poor ground (G101).n |
| 9. | Connect PCM connector A (31P). |
| 10. | Turn the ignition switch ON (II). |
| 11. | Measure the voltage between No. 1 terminal of the countershaft speed sensor connector and body ground. COUNTERSHAFT SPEED SENSOR CONNECTORWire side of female terminalsVCC2 (YEL/BLU) Is there about 5 V? YES - Go to 12. NO - Go to 27. |
| 12. | Turn the ignition switch OFF. |
| 13. | Jump the SCS line with the Honda PGM Tester or HDS. |
| 14. | Disconnect PCM connector A (31P). |
| 15. | Check for continuity between the No. 2 terminal of the countershaft speed sensor connector and body ground. COUNTERSHAFT SPEED SENSOR CONNECTORWire side of female terminalsNC (BLK/BLU) Is there continuity? YES - Repair short to ground in the wire between PCM connector terminal A18 and countershaft speed sensor connector.n NO - Go to 16. |
| 16. | Check for continuity between the No. 3 terminal of the countershaft speed sensor connector and body ground. Wire side of female terminals(BRN/YEL)COUNTERSHAFT SPEED SENSOR CONNECTOR Is there continuity? YES - Go to 17. NO - Repair open in the wire between the countershaft speed sensor connector and ground (G101).n |
| 17. | Reconnect PCM connector A (31P). |
| 18. | Turn the ignition switch ON (II). |
| 19. | Measure the voltage between the No. 2 and No. 3 terminals of the countershaft speed sensor connector. COUNTERSHAFT SPEED SENSOR CONNECTORWire side of female terminalsNC (BLK/BLU)(BRN/YEL) Is there about 5 V? YES - Go to 20. NO - Go to 32. |
| 20. | Connect the countershaft speed sensor connector. |
| 21. | Measure the voltage between PCM connector terminals A18 and A8 or A9. PCM CONNECTOR A (31P)LG2 (BRN/YEL)LG1(BRN/YEL)Wire side of female terminalsNC (BLK/BLU) Is the voltage 0 V or about 5 V? YES - Go to 22. NO - Replace the countershaft speed sensor. After replacing the sensor, go to 24, and check that the repair has been completed. |
| 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 A18 and A8 or A9. PCM CONNECTOR A (31P)LG2 (BRN/YEL)LG1(BRN/YEL)Wire side of female terminalsNC (BLK/BLU) Is there 1.5 V-3.5 V? YES - 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.n NO - Replace the countershaft speed sensor. After replacing the sensor, go to 24, and check that the repair has been completed. |
| 24. | Clear the DTC in CLEAR MENU with the Honda PGM Tester or HDS. |
| 25. | Test-drive the vehicle for several minutes under the same conditions as those indicated by the freeze data. |
| 26. | Check the OBD STATUS in DTCs MENU for a pass/fail test of code P0722. Did the result pass? YES - The problem has been corrected.n NO - Return to step 1 and recheck.n |
| 27. | Measure the voltage between PCM connector terminals A20 and A8 or A9. PCM CONNECTOR A (31P)LG2 (BRN/YEL)LG1(BRN/YEL)Wire side of female terminalsVCC2 (YEL/BLU) Is there 4.75 V-5.25 V? YES - Repair open in the wire between PCM connector terminal A20 and the countershaft speed sensor connector.n NO - Go to 28. |
| 28. | Turn the ignition switch OFF. |
| 29. | Jump the SCS line with the Honda PGM Tester or HDS. |
| 30. | Disconnect PCM connector A (31P). |
| 31. | Check for continuity between PCM connector terminal A20 and body ground. PCM CONNECTOR A (31P)VCC2 (YEL/BLU)Wire side of female terminalsIs there continuity? YES - Repair short to ground in the wire between PCM connector terminal A20 and the countershaft speed sensor connector.n NO - Check for loose or poor connections at PCM connector terminal A20. If the connections are 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.n |
| 32. | Measure the voltage between PCM connector terminals A18 and A8 or A9. PCM CONNECTOR A (31P)LG2 (BRN/YEL)LG1(BRN/YEL)Wire side of female terminalsNC (BLK/BLU) Is there about 5 V? YES - Repair open in the wire between PCM connector terminal A18 and the countershaft speed sensor connector.n NO - Check for loose or poor connections at PCM connector terminal A18. If the connections are 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.n |