Nissan Sentra B18 (2020-2025) Service Manual / Transmission & Driveline / Transaxle & Transmission :: Cvt: Re0f15a / Dtc/circuit Diagnosis / P0742-00 Torque Converter

Nissan Sentra B18 (2020-2025) Service Manual: P0742-00 Torque Converter

Dtc Description

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms (Trouble diagnosis content)	DTC detection condition
P0742	00	TORQUE CONVERTER CLUTCH (Torque Converter Clutch Circuit Stuck On)	Diagnosis condition	Diagnosis is permitted when all of the following conditions are satisfied: a) Shift position: D position (not manual mode) b) Acceleration pedal opening angle ≥ 10 deg c) 0 rpm < secondary pulley speed < 2000 rpm d) Engine speed ≥ 450 rpm e) Period satisfying the following e-1) is no longer than 0.02 sec. e-1) Speed difference caused by clutch (Input speed - Primary pulley speed ≥ 50 rpm f) The following "f-1" is satisfied for 5 sec or more. f-1) Lock-up instruction pressure ≤ -0.1 MPa g) Power supply voltage ≥ 10 V h) Engine torque ≧ Approximately 30 Nm
			Signal	—
			Threshold	Absolute value of speed difference caused by T/C ≤ 40 rpm
			Diagnosis delay time	5 seconds

POSSIBLE CAUSE

Harness or connector
Torque converter clutch solenoid
Control valve
Torque converter
TCM

FAIL-SAFE

Start is slow
Acceleration is slow
Engine stops when shift to “D” position during stopping the Nissan Sentra vehicle.
Stop/start system prohibited

DTC CONFIRMATION PROCEDURE

PREPARATION BEFORE WORK

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

TESTING CONDITION:

Before performing the following procedure, confirm that battery voltage is more than 10 V.

>>
GO TO 2.

CHECK DTC DETECTION

Start the engine.

Drive the Nissan Sentra vehicle and maintain the following conditions for 10 seconds or more.

Shift position	: "D" position
Accelerator pedal opening	: 10 deg or more
Nissan Sentra Vehicle speed	: 1 - 15 km/h (0.6 - 9 MPH)
Brake pedal	: Depress*

*: Keep depressing the brake pedal moderately not to accelrate the Nissan Sentra vehicle.

CAUTION:

Be careful of the driving speed.

Stop the Nissan Sentra vehicle.
Check the DTC.

Is "P0742-00" detected?

YES >>

Proceed to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

Dtc Diagnosis Procedure

DTC Diagnosis Procedure

REPLACE TRANSAXLE ASSEMBLY

Replace transaxle assembly. Refer to Removal and Installation.

>>
WORK END

 P0741-00 Torque Converter

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 P0746-00 Pressure Control Solenoid a

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