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Home >> Acura >> 2004 >> TSX Standard >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 1 (Automatic Transmission) >> DTC Troubleshooting >> DTC P0716: Problem in Input Shaft (Mainshaft) Speed Sensor Circuit; DTC P0717: Problem in Input Shaft (Mainshaft) Speed Sensor Circuit (No Signal Input)
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DTC P0716: Problem in Input Shaft (Mainshaft) Speed Sensor Circuit; DTC P0717: Problem in Input Shaft (Mainshaft) Speed Sensor Circuit (No Signal Input)

WARNING: This page is about a different variant/trim than selected.
NOTE:
  • Before you troubleshoot, record all freeze data and any on-board snapshot, and review General Troubleshooting Information (see GENERAL TROUBLESHOOTING INFORMATION  ).
  • This code is caused by an electrical circuit problem and cannot be caused by a mechanical problem in the transmission.
  1. Turn the ignition switch to ON (II).
  2. Clear the DTC with the HDS.
  3. Check for proper input shaft (mainshaft) speed sensor installation (see INPUT SHAFT (MAINSHAFT) SPEED SENSOR REPLACEMENT  ).
  4. Raise the front of the vehicle, make sure it is securely supported, and allow the front wheels to rotate freely. Or raise the vehicle on a lift.
  5. Start the engine, disable the VSA by pressing the VSA OFF switch, run the vehicle with the shift lever in D, and hold the vehicle at speeds over 12 mph (20 km/h) for at least 10 seconds. Slow down and stop the wheels.
  6. Monitor the OBD STATUS for P0716 or P0717 in the DTCs MENU with the HDS.

    Does the screen indicate FAILED? 

    YES  - Go to step 7.

    NO  - If the screen indicates PASSED, intermittent failure, the system is OK at this time. Check for poor connections or loose terminals between the input shaft (mainshaft) speed sensor and the PCM. If the screen indicates NOT COMPLETED, go to step  5.

  7. Turn the ignition switch to LOCK (0).
  8. Jump the SCS line with the HDS.
  9. Disconnect PCM connector A (31P) and the input shaft (mainshaft) speed sensor connector.
  10. Check for continuity between PCM connector terminal A8 and body ground, and between PCM connector terminal A9 and body ground.
    Fig 1: Checking Continuity Between PCM Connector Terminal A8 And Body Ground & A9 And Body Ground
    G05491237Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity? 

    YES  - Go to step 11.

    NO  - Repair open in the wires between PCM connector terminals A8, A9, and ground (G101), or repair poor ground (G101), then go to step  31.

  11. Connect PCM connector A (31P).
  12. Turn the ignition switch to ON (II).
  13. Measure the voltage between input shaft (mainshaft) speed sensor connector terminal No. 1 and body ground.
    Fig 2: Measuring Voltage Between Input Shaft Speed Sensor Connector Terminal 1 And Body Ground
    G05491238Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there about 5V? 

    YES  - Go to step 14.

    NO  - Go to step  26.

  14. Turn the ignition switch to LOCK (0).
  15. Disconnect PCM connector C (22P).
  16. Check for continuity between input shaft (mainshaft) speed sensor connector terminal No. 2 and body ground.
    Fig 3: Checking Continuity Between Input Shaft Speed Sensor Connector Terminal 2 And Body Ground
    G05491239Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity? 

    YES  - Repair short to body ground in the wire between PCM connector terminal C19 and the input shaft (mainshaft) speed sensor, then go to step  31.

    NO  -

    • '04-05 models: Go to step 17.
    • '06-08 models: Go to step  18.

  17. Check for continuity between input shaft (mainshaft) speed sensor connector terminal No. 3 and body ground.
    Fig 4: Checking Continuity Between Input Shaft Speed Sensor Connector Terminal 3 And Body Ground
    G05491240Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity? 

    YES  - Connect PCM connector C (22P), and go to step  20.

    NO  - Repair open in the wire between the input shaft (mainshaft) speed sensor and ground (G101), then go to step  31.

  18. Disconnect PCM connector A (31P).
  19. Check for continuity between input shaft (mainshaft) speed sensor connector terminal No. 3 and PCM connector terminal A24.
    Fig 5: Checking Continuity Between Input Shaft Speed Sensor Connector Terminal 3 And PCM Connector Terminal A24
    G05491241Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity? 

    YES  - Connect PCM connectors A (31P) and C (22P), and go to step 20.

    NO  - Repair open in the wire between the input shaft (mainshaft) speed sensor and PCM connector terminal A24, then go to step  31.

  20. Turn the ignition switch to ON (II).
  21. Measure the voltage between input shaft (mainshaft) speed sensor connector terminals No. 2 and No. 3.
    Fig 6: Measuring Voltage Between Input Shaft Speed Sensor Connector Terminals 2 And 3
    G05491242Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there about 5 V? 

    YES  - Go to step 22.

    NO  - Go to step  30.

  22. Connect the input shaft (mainshaft) speed sensor connector.
  23. Measure the voltage between PCM connector terminals C19 and A9.
    Fig 7: Measuring Voltage Between PCM Connector Terminals C19 And A9
    G05491243Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is the voltage 0 V or about 5 V? 

    YES  - Go to step 24.

    NO  - Replace the input shaft (mainshaft) speed sensor (see INPUT SHAFT (MAINSHAFT) SPEED SENSOR REPLACEMENT  ), then go to step  31.

  24. Shift the shift lever to P. Start the engine, and let it idle.
  25. With the engine idling, measure the voltage between PCM connector terminals C19 and A9.
    Fig 8: Measuring Voltage Between PCM Connector Terminals C19 And A9
    G05491244Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there 1.5-3.5 V? 

    YES  - Go to step  37.

    NO  - Replace the input shaft (mainshaft) speed sensor (see INPUT SHAFT (MAINSHAFT) SPEED SENSOR REPLACEMENT  ), then go to step  31.

  26. Measure the voltage between PCM connector terminals A21 and A9.
    Fig 9: Measuring Voltage Between PCM Connector Terminals A21 And A9
    G05491245Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there about 5 V? 

    YES  - Repair open in the wire between PCM connector terminal A21 and the input shaft (mainshaft) speed sensor, then go to step  31.

    NO  - Go to step 27.

  27. Turn the ignition switch to LOCK (0).
  28. Disconnect PCM connector A (31P).
  29. Check for continuity between PCM connector terminal A21 and body ground.
    Fig 10: Checking Continuity Between PCM Connector Terminal A21 And Body Ground
    G05491246Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity? 

    YES  - Repair short to body ground in the wire between PCM connector terminal A21 and the input shaft (mainshaft) speed sensor, then go to step  31.

    NO  - Go to step  37.

  30. Measure the voltage between PCM connector terminals C19 and A9.
    Fig 11: Measuring Voltage Between PCM Connector Terminals C19 And A9
    G05491247Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there about 5 V? 

    YES  - Repair open in the wire between PCM connector terminal C19 and the input shaft (mainshaft) speed sensor, then go to step 31.

    NO  - Go to step  37.

  31. Reconnect all connectors.
  32. Turn the ignition switch to ON (II).
  33. Clear the DTC with the HDS.
  34. Start the engine, disable the VSA by pressing the VSA OFF switch, run the vehicle with the shift lever in D and hold the vehicle at speeds over 12 mph (20 km/h) for at least 10 seconds. Slow down and stop the wheels.
  35. Check for DTCs with the HDS.

    Is DTC P0716 or P0717 indicated? 

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

    NO  - Go to step 36.

  36. Monitor the OBD STATUS for P0716 or P0717 in the DTCs MENU with the HDS.

    Does the screen indicate PASSED? 

    YES  - Troubleshooting is complete. If any other DTCs were indicated in step  35, go to the INDICATED DTCS TROUBLESHOOTING .

    NO  - If the screen indicates FAILED, check for poor connections or loose terminals between the input shaft (mainshaft) speed sensor and the PCM, then go to step  1. If the screen indicates NOT COMPLETED, go to step  34.

  37. Update the PCM if it does not have the latest software (see UPDATING THE PCM  ), or substitute a known-good PCM (see SUBSTITUTING THE PCM  ).
  38. Start the engine, disable the VSA by pressing the VSA OFF switch, run the vehicle with the shift lever in D and hold the vehicle at speeds over 12 mph (20 km/h) for at least 10 seconds. Slow down and stop the wheels.
  39. Check for DTCs with the HDS.

    Is DTC P0716 or P0717 indicated? 

    YES  - Check for poor connections or loose terminals between the input shaft (mainshaft) speed sensor and the PCM. If the PCM was updated, substitute a known-good PCM (see SUBSTITUTING THE 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 P0716 or P0717 in the DTCs MENU with the HDS.

    Does the screen indicate PASSED? 

    YES  - If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM; '04-05 models (see '04-05 MODELS ), '06-08 models (see '06-08 MODELS ). If any other DTCs were indicated in step  39, go to the INDICATED DTCS TROUBLESHOOTING .

    NO  - If the screen indicates FAILED, check for poor connections or loose terminals between the input shaft (mainshaft) speed sensor and the PCM. If the PCM was updated, substitute a known-good PCM (see SUBSTITUTING THE PCM  ), then go to step  38. If the PCM was substituted, go to step  1. If the screen indicates NOT COMPLETED, go to step  38.

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