The CVT fluid temperature sensor converts the fluid temperature into a resistance value which is detected by the ECM.
The sensor resistance changes with the CVT fluid temperature. As the temperature rises, the sensor resistance decreases. The ECM applies voltage to the temperature sensor through ECM terminal THO1 and calculates the fluid temperature based on the voltage signal.
The CVT fluid temperature is likely to increase under conditions such as towing, climbing hills and in traffic.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | DTC Output from | Priority | Note |
|---|---|---|---|---|---|---|---|
| P071000 | Transmission Fluid Temperature Sensor "A" Circuit Range/Performance | Either of the following conditions is met (2-trip detection logic):
·
The intake air and engine coolant temperatures were more than -10°C (14°F) at engine start, the CVT fluid temperature is less than 20°C (68°F), and the engine coolant temperatures are more than 82°C (180°F) for 3 seconds when the vehicle is driven for over 18 minutes and 7 km (4 miles). ·
When the intake air and engine coolant temperatures were more than -10°C (14°F) at engine start, the CVT fluid temperature is less than 5°C (41°F) for 3 seconds, and the vehicle is driven with the accelerator pedal depressed for over 11 minutes and 7 km (4 miles) with lock-up OFF. ·
The engine coolant temperature was less than 35°C (95°F) at engine start, and the CVT fluid temperature is 100°C (212°F) or more for 10 seconds. |
·
CVT fluid level ·
Transmission wire (CVT fluid temperature sensor) |
Comes on | Engine | B | SAE Code:
P0711 |
The CVT fluid temperature sensor converts the CVT fluid temperature to an electrical resistance value. Based on the resistance, the ECM determines the CVT fluid temperature and detects an open or short circuit in the CVT fluid temperature circuit.
After driving the vehicle for a certain amount of time, the CVT fluid temperature should increase. If the CVT fluid temperature remains below 20°C (68°F), or less than 5°C (41°F) depending on the conditions, the ECM interprets this as a malfunction, stores a DTC and illuminates the MIL.
When the engine coolant temperature reaches 35°C (95°F) after a cold engine start, if the CVT fluid temperature is 100°C (212°F) or more, the ECM interprets this as a malfunction, illuminates the MIL, and stores this DTC.
When performing the confirmation driving pattern, obey all speed limits and traffic laws.
After repairs have been completed, clear the DTCs and then check that the vehicle has returned to normal by performing the following All Readiness check procedure.
When clearing the permanent DTCs, refer to the Clear Permanent DTC procedure.
Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
Turn the ignition switch off and wait for 2 minutes or more.
Start the engine and turn the GTS on.
Enter the following menus: Powertrain / Engine / Data List / A/T Oil Temperature No.1.
Warm up the engine and check that the Data List value (A/T Oil Temperature No.1) is between 20 and 100°C (68 and 212°F). [*1]
[*1]: Normal judgment procedure.
The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.
Enter the following menus: Powertrain / Engine / Utility / All Readiness.
Input the DTC: P071000.
Check the DTC judgment result.
| GTS Display | Description |
|---|---|
| NORMAL | ·
DTC judgment completed ·
System normal |
| ABNORMAL | ·
DTC judgment completed ·
System abnormal |
| INCOMPLETE | ·
DTC judgment not completed ·
Perform driving pattern after confirming DTC enabling conditions |
| N/A | ·
Unable to perform DTC judgment ·
Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit |
If the judgment result shows NORMAL, the system is normal.
If the judgment result shows ABNORMAL, the system has a malfunction.
If the judgment result shows INCOMPLETE or N/A, perform the normal judgment procedure again.
Perform the universal trip to clear permanent DTCs.
Perform registration and/or initialization when parts related to the continuously variable transaxle system are replaced.
Check that no DTCs are stored after performing initialization.
If any DTCs other than P071000 are output, perform troubleshooting for those DTCs first.
Read the DTCs using the GTS.
| Result | Proceed to |
|---|---|
| Only P071000 is output | A |
| P071000 and other DTCs are output | B |
A
B
Check the CVT fluid level.
CVT fluid level is correct.
| Proceed to |
|---|
| OK |
| NG |
OK
NG