DTC P0716: Problem in Input Shaft (Mainshaft) Speed Sensor Circuit; DTC P0717: Problem in Input Shaft (Mainshaft) Speed Sensor Circuit (No Signal Input)

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.

Turn the ignition switch to ON (II).
Clear the DTC with the HDS.
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.
Check for proper input shaft (mainshaft) speed sensor installation (see INPUT SHAFT (MAINSHAFT) SPEED SENSOR REPLACEMENT ). If the sensor is installed incorrectly, reinstall the sensor correctly, then go to step 32.
Start the engine, disable the VSA by pressing the VSA OFF switch, run the vehicle in D, and hold the vehicle at speeds over 12 mph (20 km/h) for at least 10 seconds. Slow down and stpp the wheels.
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.
Turn the ignition switch to LOCK (0).
Jump the SCS line with the HDS.
Disconnect PCM connectors A (31P) and B (24P), and the input shaft (mainshaft) speed sensor connector.
Check for continuity between PCM connector terminal A3 and body ground, and between PCM connector terminal B15 and body ground.

Fig 1: Checking Continuity Between PCM Connector Terminal A3 And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES -Go to step 11.

NO -Repair open in the wire between PCM connector terminals A3, B15, and ground (G101), or repair poor ground (G101), then go to step 30.
Connect PCM connectors A (31P) and B (24P).
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
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there about 5 V?

YES -Go to step 14.

NO -Go to step 25.
Turn the ignition switch to LOCK (0).
Disconnect PCM connector D (17P).
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
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES -Repair short to body ground in the wire between PCM connector terminal D8 and the input shaft (mainshaft) speed sensor, then go to step 30.

NO -Go to step 17.
Check for continuity between input shaft (mainshaft) speed sensor connector terminal No. 3 and PCM connector terminal C12.

Fig 4: Checking Continuity Between Input Shaft (Mainshaft) Speed Sensor Connector Terminal No. 3 And PCM Connector Terminal C12
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES -Go to step 18.

NO -Repair open in the wire between the input shaft (mainshaft) speed sensor connector and PCM connector terminal C12, then go to step 30.
Reconnect PCM connector 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
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there about 5 V?

YES -Go to step 21.

NO -Go to step 29.
Connect the input shaft (mainshaft) speed sensor connector.
Measure the voltage between PCM connector terminals D8 and A3.

Fig 6: Measuring Voltage Between PCM Connector Terminals D8 And A3
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is the voltage 0 V or about 5 V?

YES -Go to step 23.

NO -Replace the input shaft (mainshaft) speed sensor (see INPUT SHAFT (MAINSHAFT) SPEED SENSOR REPLACEMENT ), then go to step 30.
Shift to P. Start the engine, and let it idle.
With the engine idling, measure the voltage between PCM connector terminals D8 and A3.

Fig 7: Measuring Voltage Between PCM Connector Terminals D8 And A3
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there 1.5-3.5 V?

YES -Go to step 36.

NO -Replace the input shaft (mainshaft) speed sensor (see INPUT SHAFT (MAINSHAFT) SPEED SENSOR REPLACEMENT ), then go to step 30.
Measure the voltage between PCM connector terminals C14 and A3.

Fig 8: Measuring Voltage Between PCM Connector Terminals C14 And A3
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there about 5 V?

YES -Repair open in the wire between PCM connector terminal C14 and the input shaft (mainshaft) speed sensor, then go to step 30.

NO -Go to step 26.
Turn the ignition switch to LOCK (0).
Disconnect PCM connector C (22P).
Check for continuity between PCM connector terminal C14 and body ground.

Fig 9: Checking Continuity Between PCM Connector Terminal C14 And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES -Repair short to body ground in the wire between PCM connector terminal C14 and the input shaft (mainshaft) speed sensor, then go to step 30.

NO -Go to step 36.
Measure the voltage between PCM connector terminals D8 and A3.

Fig 10: Measuring Voltage Between PCM Connector Terminals D8 And A3
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there about 5 V?

YES -Repair open in the wire between PCM connector terminal D8 and the input shaft (mainshaft) speed sensor, then go to step 30.

NO -Go to step 36.
Reconnect all connectors.
Turn the ignition switch to ON (II).
Clear the DTC with the HDS.
Start the engine, disable the VSA by pressing the VSA OFF switch, run the vehicle 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.
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 35.
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 34, 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 33.
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 ).
Start the engine, disable the VSA by pressing the VSA OFF switch, run the vehicle 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.
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 37. If the PCM was substituted, go to step 1.

NO -Go to step 39.
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 (see ECM/PCM REPLACEMENT ). If any other DTCs were indicated in step 38, 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 37. If the PCM was substituted, go to step 1. If the screen indicates NOT COMPLETED, go to step 37.