Nissan Rogue Service Manual: P0744 torque converter

Nissan Rogue Service Manual / Transmission & driveline / Transaxle & Transmission / Dtc/circuit diagnosis / P0744 torque converter

DTC Description

DTC DETECTION LOGIC

DTC	CONSULT screen terms (Trouble diagnosis content)	DTC detection condition
P0744	TORQUE CONVERTER (Torque converter clutch circuit intermittent)	When all of the following conditions are satisfied and this state is maintained for 30 seconds: TCM power supply voltage: More than 11 V P0717 is not detected. CAN communication is normal Torque converter slip speed: (40+vihicle speed/2) rpm LU pressure: More than 0.2 MPa

POSSIBLE CAUSE

Torque converter clutch solenoid valve
Control valve assembly
Torque converter

FAIL-SAFE

Start is slow
Acceleration is slow
Lock-up is not performed

DTC CONFIRMATION PROCEDURE

CAUTION: Be careful of the driving speed.

1.PREPARATION BEFORE WORK

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

>> GO TO 2.

2.PREPARATION BEFORE OPERATION

With CONSULT

Start the engine.
Select “Data Monitor” 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? YES >> GO TO 3.

NO >> 1. Warm the transaxle.

2. GO TO 3.

3.CHECK DTC DETECTION

Drive the vehicle.
Maintain the following conditions for 30 seconds or more.

Selector lever : “D” position
Accelerator pedal position : 0.5/8 or more
Vehicle speed : 40 km/h (25 MPH) or more

Stop the vehicle.
Check the first trip DTC.

Is “P0744” detected? YES >> Go to TM-136, "Diagnosis Procedure".

NO-1 >> To check malfunction symptom before repair: Refer to GI-41, "Intermittent Incident".

NO-2 >> Confirmation after repair: INSPECTION END

Diagnosis Procedure

1.REPLACE TRANSAXLE ASSEMBLY

Replace transaxle assembly. Refer to TM-220, "Removal and Installation".

>> WORK END

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