Code No. P0710: Malfunction of CVT Fluid Temperature Sensor

DIAGNOSTIC FUNCTION

CVT-ECU conducts fault detection by monitoring the terminal voltage of the CVT fluid temperature sensor.

JUDGMENT CRITERIA

CVT-ECU detects the fluid temperature -40°C or less for five seconds.
CVT-ECU detects the fluid temperature 180°C or more for five seconds.

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 the following connector:

B-118 CVT assembly connector
C-33 CVT-ECU connector
A-10 Intermediate connector

Check the terminals for a contact status problem and internal short circuit.

Q. Is the check result normal?

	Go to Step 3.

	Repair the defective connector.

STEP 3. Check for open circuit and short to earth in the wiring harness between the CVT assembly connector and the CVT-ECU connector

Between B-118 CVT assembly connector (terminal No. 17) and C-33 CVT-ECU connector (terminal No. 50)

Q. Is the check result normal?

	Go to Step 4.

	Repair the wiring harness.

STEP 4. Check for open circuit in the wiring harness between the CVT assembly connector and the CVT-ECU connector

Between B-118 CVT assembly connector (terminal No. 17) and C-33 CVT-ECU connector (terminal No. 50)

Q. Is the check result normal?

	Go to Step 5.

	Repair the wiring harness.

STEP 5. CVT fluid temperature sensor check

Refer to

.

Q. Is the check result normal?

	Go to Step 6.

	Replace the valve body assembly.

STEP 6. Symptom recheck after erasing diagnosis code

Q. Is the check result normal?

	Intermittent malfunction

	Replace CVT-ECU.