Nissan Sentra B18 (2020-2025) Service Manual: P2808-00 Pressure Control Solenoid G

Nissan Sentra B18 (2020-2025) Service Manual / Transmission & Driveline / Transaxle & Transmission :: Cvt: Re0f15a / Dtc/circuit Diagnosis / P2808-00 Pressure Control Solenoid G

Dtc Description

DTC Description

DTC DETECTION LOGIC

DTC		CONSULT screen terms (Trouble diagnosis content)	DTC detection condition
P2808	00	PRESSURE CONTROL SOLENOID G (Pressure Control Solenoid "G" Performance/Stuck Off)	Diagnosis condition	Diagnosis is permitted when all of the following conditions are satisfied: a) Shift position: Other than N and P position b) Nissan Sentra Vehicle speed < 3 km/h (2 MPH) c) Primary pulley speed - Secondary pulley speed < 129 rpm d) Clutch instruction pressure ≥ 0.95 MPa e) Input speed - Engine speed < 200 rpm f) Reverse inhibiter is not activate. [Shift to R position at Nissan Sentra vehicle speed more than 8 km/h (5 MPH) roughly]
			Signal	—
			Threshold	The counting of time continues while the following condition "a" is satisfied and stops when the conditions become unsatisfied (the count is maintained). When accumulated time reaches 30 seconds, DTC is detected. (The count is reset when the clutch is engaged.) a) Input speed - Primary pulley speed > 450 rpm
			Diagnosis delay time	30 seconds (total)

POSSIBLE CAUSE

Harness or connector
Select soenoid valve
TCM
Clutch-pack
Ring seal missing
Control valve

FAIL-SAFE

Selector shock is large
Start is slow
Acceleration is slow
Nissan Sentra Vehicle speed is not increased
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.

Maintain the following conditions for 40 seconds or more.

Accelerator pedal	: Released
Brake pedal	: Depressed
Nissan Sentra Vehicle speed	: 0 km/h (0 MPH) or more
Shift position	: "D" position

Maintain the following conditions for 40 seconds or more.

Accelerator pedal	: Released
Brake pedal	: Depressed
Nissan Sentra Vehicle speed	: 0 km/h (0 MPH) or more
Shift position	: "R" position

Shift to P position.
Check the DTC.

Is "P2808-00" 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

INSPECT CVT STEEL BELT

IInspect the CVT steel belt. Refer to Component Inspection.

Is CVT steel belt OK?
YES >>
GO TO 2.
NO >>
GO TO 4.

CHECK SELECT SOLENOID VALVE CIRCUIT - 1

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	Resistance
F23	37	F46	4	1 Ω or less

Is the inspection result normal?

YES >>

GO TO 3.

NO >>

Repair harness or connector.

REPLACE CONTROL VALVE

Replace control valve. Refer to Removal and Installation.

>>
GO TO 6.

CHECK SELECT SOLENOID VALVE CIRCUIT - 2

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	Resistance
F23	37	F46	4	1 Ω or less

Is the inspection result normal?

YES >>

GO TO 5.

NO >>

Repair harness or connector.
GO TO 5.

REPLACE BELT AND PULLEYS

Replace belt and pulleys. Refer to Disassembly and Assembly.

>>
GO TO 6.
CHECK DTC DETECTION

Perform DTC confirmation procedure. Refer to DTC Description.

Is "P2808-00" detected again?
YES >>
Replace TCM. Refer to Removal and Installation.
NO >>
INSPECTION END

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P2809-00 Pressure Control Solenoid G

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