DTC Troubleshooting

DTC Troubleshooting: P0721 (35)

DTC P0721:

Range/Performance Problem in CVT Output Shaft (Driven Pulley) Speed Sensor Circuit

NOTE:

- Before you troubleshoot, record all freeze data and any on-board snapshot with the HDS, and review the General Troubleshooting Information How To Troubleshoot The CVT System.
- This code is sometimes caused by an electrical circuit problem and sometimes caused by a broken steel belt in the transmission.

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

2. Clear the DTC with the HDS.

3. Raise the vehicle on a lift, or apply the parking brake, block the rear wheels, and raise the front of the vehicle. Make sure it is securely supported, and allow the front wheels to rotate freely.

4. Start the engine, disable the VSA by pressing the VSA OFF button, run the vehicle with the shift lever in D, and the engine speed at 3,500 rpm or higher, for at least 30 seconds. Slow down and stop the wheels.

5. Check for Pending or Confirmed DTCs with the HDS.

Is DTC P0722 indicated?

YES -

Go to the DTC P0722 troubleshooting DTC Troubleshooting.

NO -

Go to step 6.

6. Check for Pending or Confirmed DTCs with the HDS.

Is DTC P0721 indicated?

YES -

Go to step 7.

NO -

Intermittent failure, the system is OK at this time.

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

8. Check the CVT output shaft (driven pulley) speed sensor for poor connection and proper installation.

Is the connection and installation OK?

YES -

Replace the CVT output shaft (driven pulley) speed sensor CVT Output Shaft (Driven Pulley) Speed Sensor Replacement, then go to step 9.

NO -

Reconnect the CVT output shaft (driven pulley) speed sensor 3P connector and reinstall the CVT output shaft (driven pulley) speed sensor, then go to step 9.

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

10. Clear the DTC with the HDS.

11. Start the engine, disable the VSA by pressing the VSA OFF button, run the vehicle with the shift lever in D, and the engine speed at 3,500 rpm or higher, for at least 30 seconds. Slow down and stop the wheels.

12. Check for Pending or Confirmed DTCs with the HDS.

Is DTC P0721 indicated?

YES -

Check for poor connections or loose terminals between the CVT output shaft (driven pulley) speed sensor and the PCM, then go to step 1.

NO -

Go to step 13.

13. Monitor the OBD STATUS for P0721 in the DTCs MENU with the HDS.

Does the HDS indicate PASSED?

YES -

Troubleshooting is complete. If any other Pending or Confirmed DTCs were indicated in step 12, go to the indicated DTC's troubleshooting.

NO -

If the HDS indicates FAILED, check for poor connections or loose terminals between the CVT output shaft (driven pulley) speed sensor and the PCM, then go to step 1. If the HDS indicates NOT COMPLETED, go to step 11.