DTC Troubleshooting: P0716 (15-5)

DTC P0716:  Problem in Input Shaft (Mainshaft) Speed Sensor Circuit

NOTE:

1.Record all freeze data, then clear the DTC with the HDS.

2.Check for proper input shaft (mainshaft) speed sensor installation.

3.4WD model: Raise the vehicle, make sure it is securely supported, and allow all four wheels to rotate freely.
2WD model: Raise the front of the vehicle, make sure it is securely supported, and allow the front wheels to rotate freely. Or raise the vehicle.

4.Start the engine, drive the vehicle in the D position, and hold the vehicle at speeds over 48 km/h (30 mph) for more than 10 seconds, then 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 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 connectors. If the tester indicates NOT COMPLETE, return to 4 and recheck.n


6.Turn the ignition switch OFF.

7.Jump the SCS line with the HDS.

8.Disconnect PCM connector A (31P) and input shaft (mainshaft) speed sensor connector.

9.Check for continuity between PCM connector terminals A8 and body ground, and between A9 and body ground.

 

Is there continuity?


YES - Go to 10.


NO - Repair open in the wires between PCM connector terminals A8, A9, and ground (G101), or repair poor ground (G101), then go to 30.


10.Connect PCM connector A (31P).

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 13.


NO - Go to 24.

13.Turn the ignition switch OFF.

14.Disconnect PCM connector C (22P).

15.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 C19 and input shaft (mainshaft) speed sensor, then go to 30.


NO - Go to 16.


16.Disconnect PCM connector A (31P).

17.Check for continuity between input shaft (mainshaft) speed sensor connector terminal No. 3 and PCM connector terminal A23.

 

Is there continuity?


YES - Connect PCM connectors A (31P) and C (22P), and go to 18.


NO - Repair open in the wire between input shaft (mainshaft) speed sensor and PCM connector terminal A23, then go to 30.


18.Turn the ignition switch ON (II).

19.Measure the voltage between input shaft (mainshaft) speed sensor connector terminals No. 2 and No. 3.

 

Is there about 5 V?


YES - Go to 20.


NO - Go to 29.

20.Connect the input shaft (mainshaft) speed sensor connector.

21.Measure the voltage between PCM connector terminals C19 and A8 or A9.

 

Is the voltage 0 V or about 5 V?


YES - Go to 22.


NO - Replace the input shaft (mainshaft) speed sensor, then go to 30.

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

23.With the engine idling, measure the voltage between PCM connector terminals C19 and A8 or A9.

 

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, then recheck. If the symptom/indication goes away with a known-good PCM, replace the original  PCM.n


NO - Replace the input shaft (mainshaft) speed sensor, then go to 30.


24.Measure the voltage between PCM connector terminals A20 and A8 or A9.

 

Is there about 5 V?


YES - Repair open in the wire between PCM connector terminal A20 and the input shaft (mainshaft) speed sensor connector, then go to 30.


NO - Go to 25.

25.Turn the ignition switch OFF.

26.Jump the SCS line with the HDS.

27.Disconnect PCM connector A (31P).

28.Check for continuity between PCM connector terminal A20 and body ground.

 

Is there continuity?


YES - Repair short to ground in the wire between PCM connector terminal A20 and the input shaft (mainshaft) speed sensor connector, then go to 30.


NO - Check for loose or poor connections at PCM connector terminal A20. 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.n

29.Measure the voltage between PCM connector terminals C19 and A8 or A9.

 

Is there about 5 V?


YES - Repair open in the wire between PCM connector terminal C19 and the input shaft (mainshaft) speed sensor connector, then go to 30.


NO - Check for loose or poor connections at PCM connector terminal C19. 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.n

30.Clear the DTC with the HDS.

31.Test-drive the vehicle for several minutes under the same conditions as those indicated by the freeze data.

32.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.n


NO - Return to 1 and recheck.n