DTC Troubleshooting

DTC Troubleshooting: P0717 (15), P0718 (15)

DTC P0717

Input Shaft (Mainshaft) Speed Sensor Circuit (No Signal Input)

DTC P0718:

Input Shaft (Mainshaft) Speed Sensor (Intermittent Failure)

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

K24Z6 Engine

1. Clear the DTC with the HDS.

2. 4WD: Raise the vehicle on a lift, make sure it is securely supported, and allow all four wheels to rotate freely.
2WD: Raise the front of the vehicle, make sure it is securely supported, and allow the front wheels to rotate freely, or raise the vehicle.

3. Start the engine, disable the VSA by pressing the VSA OFF button, run the vehicle with the shift lever in D, and at speeds over 12 mph (20 km/h). Check the input shaft (mainshaft) speed and the output shaft (countershaft) speed with the HDS in the A/T Data List. Slow down, and stop the wheels.

Are the speeds about the same?

YES -

Intermittent failure, the system is OK at this time.�

NO -

Go to step 4.

4. Turn the ignition switch to LOCK (0).

5. Disconnect the input shaft (mainshaft) speed sensor connector.

6. Turn the ignition switch to ON (II).

7. 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 8.

NO -

Repair open in the wire between PCM connector terminal B19 and the input shaft (mainshaft) speed sensor, then go to step 15.

8. Measure the voltage between input shaft (mainshaft) speed sensor connector terminal No. 2 and body ground.





Is there about 5 V?

YES -

Go to step 9.

NO -

Go to step 11.

9. Turn the ignition switch to LOCK (0).

10. Check for continuity between input shaft (mainshaft) speed sensor connector terminal No. 3 and body ground.





Is there continuity?

YES -

Replace the input shaft (mainshaft) speed sensor Input Shaft (Mainshaft) Speed Sensor Replacement, then go to step 15.

NO -

Repair open in the wire between PCM connector terminal B34 and the input shaft (mainshaft) speed sensor, then go to step 15.

11. Turn the ignition switch to LOCK (0).

12. Jump the SCS line with the HDS.

13. Disconnect PCM connector B (49P).

14. Check for continuity between input shaft (mainshaft) speed sensor connector terminal No. 2 and body ground.





Is there continuity?

YES -

Repair short to body ground in the wire between PCM connector terminal B18 and the input shaft (mainshaft) speed sensor, then go to step 15.

NO -

Repair open in the wire between PCM connector terminal B18 and the input shaft (mainshaft) speed sensor, then go to step 15.

15. Reconnect all connectors.

16. Turn the ignition switch to ON (II).

17. Clear the DTC with the HDS.

18. Start the engine, disable the VSA by pressing the VSA OFF button, run the vehicle with the shift lever in D, and at speeds over 12 mph (20 km/h). Check the input shaft (mainshaft) speed and the output shaft (countershaft) speed with the HDS in the A/T Data List. Slow down, and stop the wheels.

Are the speeds about the same?

YES -

Troubleshooting is complete.�

NO -

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