Nissan Sentra manuals

Nissan Sentra Service Manual: P0444, P0445 EVAP Canister purge volume control solenoid valve

Nissan Sentra Service Manual / Engine / Engine control system / Dtc/circuit diagnosis / P0444, P0445 EVAP Canister purge volume control solenoid valve

DTC Logic

DTC DETECTION LOGIC

DTC No.

 CONSULT screen terms (Trouble diagnosis content)

 DTC detecting condition

 Possible cause
P0444 PURG VOLUME CONT/V (Evaporative emission system purge control valve circuit open) An excessively low voltage signal is sent to ECM through the EVAP canister purge volume control solenoid valve.
  • Harness or connectors (EVAP canister purge volume control solenoid valve circuit is open or shorted.)
  • EVAP canister purge volume control solenoid valve
P0445 PURG VOLUME CONT/V (Evaporative emission system purge control valve circuit shorted) An excessively high voltage signal is sent to ECM through the valve
  • Harness or connectors (EVAP canister purge volume control solenoid valve circuit is shorted.)
  • EVAP canister purge volume control solenoid valve

DTC CONFIRMATION PROCEDURE

1.CONDITIONING

If DTC Confirmation Procedure has been previously conducted, always perform the following procedure before conducting the next test.

  1. Turn ignition switch OFF and wait at least 10 seconds.
  2. Turn ignition switch ON.
  3. Turn ignition switch OFF and wait at least 10 seconds.

TESTING CONDITION:

Before performing the following procedure, confirm battery voltage is more than 11 V at idle.

>> GO TO 2.

2.PERFORM DTC CONFIRMATION PROCEDURE

  1. Start engine and let it idle for at least 13 seconds.
  2. Check 1st trip DTC.

Is 1st trip DTC detected? YES >> Proceed to EC-298, "Diagnosis Procedure".

NO >> INSPECTION END

Diagnosis Procedure

1.CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE POWER SUPPLY

  1. Turn ignition switch OFF.
  2. Disconnect EVAP canister purge volume control solenoid valve harness connector.
  3. Turn ignition switch ON.
  4. Check the voltage between EVAP canister purge volume control solenoid valve harness connector and ground.

Is the inspection result normal?


Is the inspection result normal? YES >> GO TO 3.

NO >> GO TO 2.

2.CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE POWER SUPPLY CIRCUIT

  1. Turn ignition switch OFF.
  2. Disconnect IPDM E/R harness connector.
  3. Check the continuity between EVAP canister purge volume control solenoid valve harness connector and IPDM E/R harness connector.


  1. Also check harness for short to ground.

Is the inspection result normal? YES-1 ( With CONSULT)>>GO TO 4.


YES-2 (TO 5.  Without CONSULT)>>GO
TO 5.

NO >> Repair or replace error-detected parts.

3.CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE GROUND CIRCUIT

  1. Turn ignition switch OFF.
  2. Disconnect ECM harness connector.
  3. Check the continuity between EVAP canister purge volume control solenoid valve harness connector and ECM harness connector.


  1. Also check harness for short to power.

Is the inspection result normal? YES-1 ( With CONSULT)>>GO TO 4.


YES-2 ( Without CONSULT)>>GO TO 5.


NO >> Repair or replace error-detected parts.

4.CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE OPERATION

With CONSULT


  1. Reconnect all harness connectors disconnected.
  2. Start engine.
  3. Perform “PURG VOL CONT/V” in “ACTIVE TEST” mode of “ENGINE” using CONSULT.
  4. Check that engine speed varies according to the valve opening.

Does engine speed vary according to the valve opening? YES >> Check intermittent incident. Refer to GI-39, "Intermittent Incident".

NO >> GO TO 5.

5.CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

Check the EVAP canister purge volume control solenoid valve. Refer to EC-300, "Component Inspection (EVAP Canister Purge Volume Control Solenoid Valve)".

Is the inspection result normal? YES >> Check intermittent incident. Refer to GI-39, "Intermittent Incident".

NO >> Replace EVAP canister purge volume control solenoid valve. Refer to EM-27, "Exploded View".

Component Inspection (EVAP Canister Purge Volume Control Solenoid Valve)

1.CHECK EVAP CANISTER PURGE VOLUME CONTROL SOLENOID VALVE

With CONSULT


  1. Turn ignition switch OFF.
  2. Reconnect all harness connectors disconnected.
  3. Disconnect EVAP purge hoses connected to EVAP canister purge volume control solenoid valve.
  4. Turn ignition switch ON.
  5. Select “PURG VOL CONT/V” in “ACTIVE TEST” mode of “ENGINE” using CONSULT
  6. Touch “Qd” and “Qu” on CONSULT screen to adjust “PURG VOL C/V” opening and check air passage continuity of EVAP canister purge volume control solenoid valve as per the following conditions.


Without CONSULT


Without CONSULT


  1. Turn ignition switch OFF.
  2. Disconnect EVAP canister purge volume control solenoid valve harness connector.
  3. Disconnect EVAP purge hoses connected to EVAP canister purge volume control solenoid valve.
  4. Check air passage continuity of EVAP canister purge volume control solenoid valve as per the following conditions.

Is the inspection result normal?


Is the inspection result normal? YES >> INSPECTION END

NO >> Replace EVAP canister purge volume control solenoid valve. Refer to EM-27, "Exploded View".

P0443 EVAP Canister purge volume control solenoid valve
DTC No. CONSULT screen terms (Trouble diagnosis content) DTC detecting condition Possible cause P0443 PURG VOLUME CONT/V (Evaporative emission system purge control ...

P0447 EVAP Canister vent control valve
DTC Logic DTC DETECTION LOGIC DTC No. CONSULT screen terms (Trouble diagnosis content) DTC detecting condition Possible cause P0447 VENT CONTROL VALVE (Evaporative ...

Other materials:

Air bags, seat belts and child restraints
Top tether anchor Rear seat belts Roof-mounted curtain side-impact supplemental air bag Head restraints/headrests Front seat belts Supplemental front-impact air bags Front seats Occupant classification sensor Seat belt with pretensioner Front seat-mounted side-impact sup ...

Under cover
Front under cover Front under cover : removal and installation REMOVAL Remove front side of front fender protector (LH/RH). Refer to EXT-28, "FENDER PROTECTOR : Removal and Installation - Front Fender Protector". Remove engine under cover. EXT-31, "ENGINE UNDER COVER : Re ...

Power supply and ground circuit
Combination meter COMBINATION METER : Diagnosis Procedure Regarding Wiring Diagram information, refer to MWI-28, "Wiring Diagram". 1.Check fuses Check that the following fuses are not blown. Is the fuse blown? Yes >> replace the blown fuse after repairing the affected circu ...

© 2014-2023 Copyright www.nisentra.com