P0721

DTC P0721

DTC Detecting Condition and Trouble Area






Wiring Diagram

Refer to P0716 DTC P0716.

DTC Confirmation Procedure

WARNING:

If you do not select a suitable route and take proper precautions when performing a road test, an accident can occur.

- Select a level road with no traffic to minimize the risk of accident.
- Perform the test extremely carefully.
- Perform the road test using 2 persons, a driver and an assistant.

NOTE:

- If DTC other than aimed DTC are previously detected in DTC confirmation procedure, be sure to troubleshoot DTC previously detected.
- Check that the following conditions are satisfied when using this procedure.

- Battery voltage > 10.5 V
- CVT fluid temperature at engine start ≥ 10 °C (50 °F)

1) Drive vehicle more than 40 km/h (25 mile/h) for 10 sec.
2) Stop vehicle and turn ignition switch to OFF position.
3) Repeat Step 1) through 2) twice.
4) Turn ignition switch to ON position.

DTC Troubleshooting



1.
Was "CVT System Check" performed?
YES
Go to Step 2.
NO
Go to CVT System Check.

2. Secondary pulley speed sensor and its circuit check

Check secondary pulley speed sensor and its circuit according to Step 3 through 4 of P0722 DTC P0722.

Are they in good condition?
YES
Go to Step 3.
NO
Repair or replace defective wire harness.

3. Primary pulley speed sensor and its circuit check

Check primary pulley speed sensor and its circuit according to Step 3 through 4 of P0717 DTC P0717.

Are they in good condition?
YES
Go to Step 4.
NO
Repair or replace defective wire harness.

4. DTC check of ECM

Check DTC of ECM. DTC Check

Is there any DTC(s)?
YES
Go to troubleshooting for applicable DTC.
NO
Substitute a known-good TCM and recheck.