Code No. P0712:
Malfunction of CVT Fluid Temperature Sensor (Short)
Code No. P0713: Malfunction of
CVT Fluid Temperature Sensor (Open)
DIAGNOSTIC FUNCTION
JUDGEMENT CRITERIA
- CVT-ECU detects the fluid temperature -40°C or less for
5 seconds <P0713>.
- CVT-ECU detects the fluid temperature 180°C or more for 5 seconds <P0712>.
PROBABLE CAUSES
- Malfunction of the valve body assembly (Faulty CVT fluid temperature sensor)
- Damaged wiring harness and connectors
- Malfunction of CVT-ECU
DIAGNOSTIC PROCEDURE |
STEP 1. M.U.T.-III data list |
Item 05: CVT fluid temperature sensor signal (Refer to Service Data Reference Table  ). |
Q.
Is the check result normal?
|
 Intermittent malfunction |
|
 Go to Step 2. |
|
STEP 2. Check for open circuit and short to earth in SPWR line between the CVT assembly connector and the CVT-ECU connector |
Q.
Is the check result normal?
|
| Go to Step 3. |
|
| Repair the connector(s) or wiring harness. |
|
STEP 3. Check for open circuit in SGND line between the CVT assembly connector and the CVT-ECU connector |
Q.
Is the check result normal?
|
| Go to Step 4. |
|
| Repair the connector(s) or wiring harness. |
|
STEP 4. CVT fluid temperature sensor check |
| Refer to . |
Q.
Is the check result normal?
|
| Go to Step 5. |
|
| Replace the valve body assembly. |
|
STEP 5. Symptom recheck after erasing diagnosis code |
Q.
Is the check result normal?
|
| Intermittent malfunction |
|
| Replace CVT-ECU. |
|