P0716
DTC P0716: Problem in Input Shaft (Mainshaft) Speed Sensor CircuitNOTE:
^ Record all freeze data and review the 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. Record all freeze data, and clear the DTC with the HDS.
2. Check for proper input shaft (mainshaft) speed sensor installation.
3. Raise the vehicle, make sure it is securely supported, and allow the all four wheels to rotate freely.
4. Start the engine, drive the vehicle in the 0 position, and hold the vehicle at speeds over 30 mph (48 km/h) for more than 10 seconds. Slow down and stop the wheels.
5. Check the OBD status in DTC Monitor Tool from DTCs/Freeze Data in A/T Mode Menu for a pass/fail test of code P0716.
Did the result indicate a fail?
YES-Go to step 6.
NO-Intermittent failure, the system is OK at this time. Check for loose or poor connections at the PCM and input shaft (mainshaft) speed sensor. If the tester indicates NOT COMPLETE, return to step 4 and recheck.
6. Turn the ignition switch OFF.
7. Jump the SCS line with the HDS.
8. Disconnect PCM connectors B (44P), C (44P), and input shaft (mainshaft) speed sensor connector.
9. Check for continuity between PCM connector terminals 81 and body ground, between, B36 and body ground, between B43 and body ground, and between C40 and body ground.
Is there continuity?
YES-Go to step 10.
NO-Repair open in the wires between PCM connector terminals B1, B36, B43, C40, and ground (G101), or repair poor ground (G101), then go to step 31.
10. Connect PCM connectors B (44P) and C (44P).
11. Turn the ignition switch ON (II).
12. Measure the voltage between input shaft, (mainshaft) speed sensor connector terminal No. 1 and body ground.
Is there about 5 V?
YES-Go to step 16.
NO-Go to step 13.
13. Turn the ignition switch OFF.
14. Disconnect PCM connector C (44P).
15. Check for continuity between PCM connector terminal C13 and input shaft (mainshaft) speed sensor connector terminal No. 1.
Is there continuity?
YES-Check for loose or poor connections at PCM connector terminal C13. 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.
NO-Repair open in the wire between PCM connector terminal C13 and the input shaft (mainshaft) speed sensor, then go to step 31.
16. Turn the ignition switch OFF.
17. Disconnect PCM connector B (44P).
18. Check for continuity between input shaft (mainshaft) speed sensor connector terminal No. 2 and body ground.
Is there continuity?
YES-Repair short to ground in the wire between PCM connector terminal B39 and input shaft (mainshaft) speed sensor connector, then go to step 31.
NO-Go to step 19.
19. Disconnect PCM connector C (44P).
20. Check for continuity between PCM connector terminal C14 and input shaft (mainshaft) speed sensor connector terminal No. 3.
Is there continuity?
YES-Go to step 21.
NO-Repair open in the wire. between the input shaft (mainshaft) speed sensor connector and PCM connector terminal C14, then go to step 31.
21. Connect PCM connectors B (44P) and C (44P).
22. Turn the ignition switch ON (II).
23. Measure the voltage between input shaft (mainshaft) speed sensor connector terminals No. 2 and No. 3.
Wire side of female terminals
Is there about 5 V?
YES-Go to step 27.
NO-Go to step 24.
24. Turn the ignition switch OFF.
25. Disconnect PCM connector B (44P).
26. Check for continuity between PCM connector terminal B39 and input shaft (mainshaft) speed sensor connector terminal No. 2.
Wire side of female terminals
Is there continuity?
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.
NO-Repair open in the wire between PCM connector terminal B39 and the input shaft (mainshaft), then go to step 31.
27. Connect the input shaft (mainshaft) speed sensor connector.
28. Clear the DTC with the HDS.
29. 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.
30. Check the OBD status in DTC Monitor Tool from DTCs/Freeze Data in A/T Mode Menu for a pass/fail test of code P0716.
Did the result indicate a fail?
YES-Replace the input shaft (mainshaft) speed sensor, then go to step 31.
NO-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.
31. Clear the DTC with the HDS.
32. Test-drive the vehicle for several minutes under the same conditions as those indicated by the freeze data.
33. Check the OBD status in DTC Monitor Tool from DTCs/Freeze Data in A/T Mode Menu for a pass/fail test of code P0716.
Did the result indicate a pass?
YES-The problem has been corrected.
NO-Return to step 1 and recheck.