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 .
This code is caused by an electrical circuit problem and cannot be caused by a mechanical problem in the transmission.

Clear the DTC with the HDS.
Check for proper input shaft {mainshaft) speed sensor installation (see INPUT SHAFT (MAINSHAFT) SPEED SENSOR REPLACEMENT ). If the sensor is installed improperly, correct the problem, then go to step 36.
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.
Start the engine, and run the vehicle in D at speeds over 12 mph (20 km/h) with the engine speed at 500 rpm or higher, for at least 10 seconds. Slow down, and stop the wheels.
Monitor the OBD status for P0716 or P0717 in the DTCs/Freeze Data in A/T Mode Menu for a pass/fail.
Does the HDS indicate FAILED?

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 the input shaft (mainshaft) speed sensor connectors. If the HDS indicates NOT COMPLETED, return to step 4 and recheck.
Turn the ignition switch to LOCK (0).
Jump the SCS line with the HDS.
Disconnect PCM connector A (31P).
Check for continuity between PCM connector terminals A8 and body ground, and between A9 and body ground.

Fig 1: Checking Continuity Between PCM Connector Terminals A8 And Between A9 And Body Ground

Is there continuity?

YES - Go to step 10.

NO - Repair open in the wires between PCM connector terminals A8, A9 and ground (G101), or repair poor ground (G101), then go to step 36.
Connect PCM connector A (31P).
Disconnect the input shaft (mainshaft) speed sensor connector.
Turn the ignition switch to ON (II).
Measure the voltage between input shaft (mainshaft) speed sensor connector terminal No. 1 and body ground.

Fig 2: Measuring Voltage Between Input Shaft (Mainshaft) Speed Sensor Connector Terminal No. 1 And Body Ground

Is there about 5 V?

YES - Go to step 14.

NO - Go to step 27.
Turn the ignition switch to LOCK (0).
Disconnect PCM connector C (22P).
Check for continuity between input shaft (mainshaft) speed sensor connector terminal No. 2 and body ground.

Fig 3: Checking Continuity Between Input Shaft (Mainshaft) Speed Sensor Connector Terminal No. 2 And Body Ground

Is there continuity?

YES - Repair short in the wire between PCM connector terminal C19 and the input shaft (mainshaft) speed sensor connector, then go to step 36.

NO - Go to step 17.
Disconnect PCM connector A (31P).
Check for continuity between PCM connector terminal A23 and input shaft (mainshaft) speed sensor connector terminal No. 3.

Fig 4: Checking Continuity Between PCM A23 And Input Shaft (Mainshaft) Speed Sensor Connector Terminal No. 3

Is there continuity?

YES - Go to step 19.

NO - Repair open in the wire between the input shaft (mainshaft) speed sensor connector and PCM connector terminal A23, then go to step 36.
Connect PCM connectors A (31P) and C (22P).
Turn the ignition switch to ON (II).
Measure the voltage between input shaft (mainshaft) speed sensor connector terminals No. 2 and No. 3.

Fig 5: Measuring Voltage Between Input Shaft (Mainshaft) Speed Sensor Connector Terminals No. 2 And No. 3

Is there about 5 V?

YES - Go to step 22.

NO - Go to step 26.
Connect the input shaft (mainshaft) speed sensor connector.
Measure the voltage between PCM connector terminals C19 and A8 or A9.

Fig 6: Measuring Voltage Between PCM Connector Terminals C19 And A8 Or A9

Is there 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 37.
Shift to P. Start the engine, and let it idle.
With the engine idling, measure the voltage between PCM connector terminals C19 and A8 or A9.

Fig 7: Measuring Voltage Between PCM Connector Terminals C19 And A8 Or A9

Is there 1.5-3.5 V?

YES - Go to step 32.

NO - Replace the input shaft (mainshaft) speed sensor (see INPUT SHAFT (MAINSHAFT) SPEED SENSOR REPLACEMENT ), then go to step 37.
Measure the voltage between PCM connector terminals C19 and A8 or A9.

Fig 8: Measuring 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, then go to step 36.

NO - Go to step 31.
Measure the voltage between PCM connector terminals A20 and A8 or A9.

Fig 9: Measuring 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, then go to step 36.

NO - Go to step 28.
Turn the ignition switch to LOCK (0).
Disconnect PCM connector A (31P).
Check for continuity between PCM connector terminal A20 and body ground.

Fig 10: Checking Continuity Between PCM Connector Terminal A20 And Body Ground

Is there continuity?

YES - Repair short in the wire between PCM connector terminal A20 and the input shaft (mainshaft) speed sensor, then go to step 36.

NO - Go to step 31.
Reconnect all connectors.
Update the A/T software in the PCM if it does not have the latest software (see UPDATING THE PCM ), or substitute a known-good PCM (see SUBSTITUTING THE PCM ).
Start the engine, and run the vehicle in D at speeds over 12 mph (20 km/h) with the engine speed at 500 rpm or higher, for at least 10 seconds. Slow down, and stop the wheels.
Check for DTC(s) in the DTCs/Freeze Data in A/T Mode Menu with the HDS.
Is DTC P0716 or P0717 indicated?

YES - If the PCM was updated, substitute a known-good PCM (see SUBSTITUTING THE PCM ), then recheck. If the PCM was substituted, go to step 1.

NO - Go to step 35.
Monitor the OBD status for P0716 or P0717 in the DTCs/Freeze Data in A/T Mode Menu for a pass/fail.
Does the HDS indicate PASSED?

YES - If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM (see ECM/PCM REPLACEMENT ). If any other DTCs were indicated on step 34, go to the indicated DTC's troubleshooting.

NO - Check for poor connections and loose terminals at the input shaft (mainshaft) speed sensor and the PCM. If the PCM was updated, substitute a known-good PCM (see SUBSTITUTING THE PCM ), then recheck. If the PCM was substituted, go to step 1. If the HDS indicates NOT COMPLETED, return to step 33 and recheck.
Reconnect all connectors.
Clear the DTC with the HDS.
Start the engine, and run the vehicle in D at speeds over 12 mph (20 km/h) with the engine speed at 500 rpm or higher, for at least 10 seconds. Slow down, and stop the wheels.
Check for DTC(s) in the DTCs/Freeze Data in A/T Mode Menu with the HDS.
Is DTC P0716 or P0717 indicated?

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

NO - Go to step 40.
Monitor the OBD status for P0716 or P0717 in the DTCs/Freeze Data in A/T Mode Menu for a pass/fail.
Does the HDS indicate PASSED?

YES - Troubleshooting is complete. If any other DTCs were indicated on step 39, go to the indicated DTC's troubleshooting.

NO - Check for poor connections and loose terminals at the input shaft (mainshaft) speed sensor and the PCM, then go to step 1. If the HDS indicates NOT COMPLETED, return to step 38 and recheck.