DTC Description

DTC DETECTION LOGIC

DTC		M.U.T.-III SE screen terms (Trouble diagnosis content)	DTC detection condition
P0740	00	TORQUE CONVERTER (Torque Converter Clutch Circuit/Open)	Diagnosis condition	When all of the following conditions are satisfied: TCM power supply voltage: More than 11 V P0743–00 is not detected
			Signal	—
			Threshold	TCM judges that solenoid valve circuit is open
			Diagnosis delay time	5 seconds

POSSIBLE CAUSE

Harness or connector (Torque converter clutch solenoid valve circuit is open or shorted to power supply)
Torque converter clutch solenoid valve

FAIL-SAFE

DTC CONFIRMATION PROCEDURE

caution

Be careful of the driving speed.

1.PREPARATION BEFORE WORK

If another "DTC CONFIRMATION PROCEDURE" occurs just before, the ignition switch is OFF and wait for at least 10 seconds, then perform the next test.

2.PREPARATION BEFORE OPERATION

With M.U.T.-III SE

Start the engine.
Select “Data List” in “TRANSMISSION”.
Select “FLUID TEMP”.
Confirm that the CVT fluid temperature is in the following range.
FLUID TEMP : 20°C (68°F) or more

With GST

Start the engine.
Set the CVT fluid to 20°C (68°F) or more.
note When the ambient temperature is 20°C (68°F), the CVT fluid usually increases to 50 to 80°C (122 to 176°F) with driving in an urban area for approximately 10 minutes.

Is the CVT fluid 20°C (68°F) or more?

3.CHECK DTC DETECTION

Drive the vehicle.
Maintain the following conditions for 10 seconds or more.
Shift position : “D” position
Vehicle speed : 40 km/h (25 MPH) or more
Stop the vehicle.
Check the first trip DTC.

Is “P0740–00” detected?

Go to Diagnosis ProcedureDTC Diagnosis Procedure

-1To check malfunction symptom before repair: Refer to Intermittent IncidentIntermittent Incident

-2Confirmation after repair: INSPECTION END

Shift position	: “D” position
Vehicle speed	: 40 km/h (25 MPH) or more