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Nissan Sentra B18 (2020-2025) Service Manual: 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

  1. 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.

  2. CHECK DTC DETECTION

    1. Start the engine.

    2. 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

    3. 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

    4. Shift to P position.

    5. 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

  1. 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.

  2. CHECK SELECT SOLENOID VALVE CIRCUIT - 1

    1. Disconnect TCM harness connector.

    2. Disconnect CVT unit harness connector.

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

      TCM

      CVT unit

      Resistance

      Connector

      Terminal

      Connector

      Terminal

      F23

      37

      F46

      4

      1 Ω or less

    Is the inspection result normal?

    YES >>

    GO TO 3.

    NO >>

    Repair harness or connector.

  3. REPLACE CONTROL VALVE

    Replace control valve. Refer to Removal and Installation.

    >>

    GO TO 6.

  4. CHECK SELECT SOLENOID VALVE CIRCUIT - 2

    1. Disconnect TCM harness connector.

    2. Disconnect CVT unit harness connector.

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

      TCM

      CVT unit

      Resistance

      Connector

      Terminal

      Connector

      Terminal

      F23

      37

      F46

      4

      1 Ω or less

    Is the inspection result normal?

    YES >>

    GO TO 5.

    NO >>

    1. Repair harness or connector.

    2. GO TO 5.

  5. REPLACE BELT AND PULLEYS

    Replace belt and pulleys. Refer to Disassembly and Assembly.

    >>

    GO TO 6.

  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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