Nissan Sentra B18 (2020-2025) Service Manual: P0747-00 Pressure Control Solenoid a

Nissan Sentra B18 (2020-2025) Service Manual / Transmission & Driveline / Transaxle & Transmission :: Cvt: Re0f15a / Dtc/circuit Diagnosis / P0747-00 Pressure Control Solenoid a

Dtc Description

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms (Trouble diagnosis content)	DTC detection condition
P0747	00	PRESSURE CONTROL SOLENOID A (Pressure Control Solenoid "A" Stuck On)	Diagnosis condition	Diagnosis is permitted when all of the following conditions are satisfied: a) Ignition voltage ≥ 9.01 V b) Battery voltage ≥ 9.01 V c) CVT fluid temperature ≥ -20 °C (-4 °F) d) Lock-up pattern: Lock-up ON or Lock-up OFF
			Signal	—
			Threshold	When the following condition "a" is satisfied for the specified period [5sec] continuously. Keep the same conditions for specified period again after interval. a) Line pressure sensor pressure > Line instruction pressure + Variation [Interval] Movement of target pressure ⇒ Target pressure under satisfied oil pressure difference judgement - Current target pressure ≥ 1 MPa Stop valid judgement ⇒ Nissan Sentra Vehicle speed ≤ 3 km/h (2 MPH)
			Diagnosis delay time	5 seconds × 2 count

POSSIBLE CAUSE

Harness or connector
Line pressure solenoid valve
Control valve
TCM

FAIL-SAFE

Lock-up is not performed
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 20 seconds or more.

Shift position	: "D" position
CVT fluid temperature	: 25 °C (77 °F) - 120 °C (248 °F)
Nissan Sentra Vehicle speed	: 40 km/h (25 MPH) or more

CAUTION:

Be careful of the driving speed.

Stop the Nissan Sentra vehicle.
Repeat step 2 to 3.
Check the DTC.

Is "P0747-00" detected?

YES >>

Proceed to Diagnosis Procedure.

NO-1>>

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

NO-2>>

Confirmation after repair: INSPECTION END

Diagnosis Procedure

Diagnosis Procedure

CHECK LINE PRESSURE SOLENOID CIRCUIT

Ignition switch OFF.
Disconnect TCM harness connector.
Disconnect CVT unit harness connector.

Check resistance between TCM harness connector terminal and CVT unit harness connector terminal.

TCM		CVT unit		Resistance
Connector	Terminal	Connector	Terminal
F23	30	F46	1	1 Ω or less

Is the inspection result normal?

YES >>

GO TO 2.

NO >>

Repair harness or connector.

REPLACE CONTROL VALVE

Replace control valve. Refer to Removal and Installation.

>>
WORK END

P0746-00 Pressure Control Solenoid a

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