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Nissan Sentra B18 (2020-2025) Service Manual: P2809-00 Pressure Control Solenoid G

Dtc Description

DTC Description

DTC DETECTION LOGIC

DTC

CONSULT screen terms

(Trouble diagnosis content)

DTC detection condition

P2809

00

'PRESSURE CONTROL SOLENOID G

(Pressure Control Solenoid "G" Stuck On)

Diagnosis condition

Diagnosis is permitted when all of the following conditions are satisfied:

a) Throttle valve opening angle < 6.27 deg

b) Nissan Sentra Vehicle speed < 3 km/h (2 MPH)

c) 20 °C (68 °F) < CVT fluid temperature < 100 °C (212 °F)

d) Input speed before select N→D or N(P)→R > 500 rpm

e) Shift position: D, L or R position

f) Stay time in the P/N position for 3 sec or more just before shifting to the other positions.

Signal

—

Threshold

When all the following conditions are established three times in 1DC:

  • Input speed: 200 rpm or less.

  • Detection time after select position

    – N → D

    : Less than 0.4 seconds

    – N → R

    : Less than 0.3 seconds

    – P → R

    : Less than 0.3 seconds

Diagnosis delay time

—
Note:

DC stands for “DRIVING CYCLE” and indicates a series of driving cycle of “Ignition switch OFF → ON → driving → OFF”.

POSSIBLE CAUSE

  • Harness or connector

  • Select soenoid valve

  • Control valve

  • TCM

  • Clutch-pack

FAIL-SAFE

  • Selector shock is large

  • 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. Continue to maintain the following conditions during this procedure.

      Accelerator pedal

      : Released

      Nissan Sentra Vehicle speed

      : 0 km/h (0 MPH)

      CVT fluid temperature

      : 20 °C (68 °F) - 100 °C (212 °F)

    3. Depress the brake pedal.

    4. Shift the selector lever from "P" position to "R" position and wait for 5 seconds.

    5. Shift the selector lever to "N" position.

    6. Shift the selector lever to "D" posiiton and wait for 5 seconds.

    7. Sihft the selector lever to "N" position.

    8. Shift the selector lever to "R" position and wait for 5 seconds.

    9. Shift the selector lever to "P" position.

    10. Repeat step 3 to 8 two times.

    11. Check the DTC.

    Is "P2809-00" 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 "P2809-00" detected again?

    YES >>

    Replace TCM. Refer to Removal and Installation.

    NO >>

    INSPECTION END

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