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:

Basic inspection
Diagnosis and repair work flow Work flow Detailed flow 1.Obtain information about symptom Interview the customer to obtain as much information as possible about the conditions and environment under which the malfunction occurs. >> GO TO 2. 2.Check symptom Check the symptom based ...

ID registration cannot be completed
Diagnosis Procedure NOTE: The Signal Tech II Tool (J-50190) can be used to perform the following functions. Refer to the Signal Tech II User Guide for additional information. Activate and display TPMS transmitter IDs Display tire pressure reported by the TPMS transmitter Read TPMS DTCs ...

Symptom diagnosis
Push-button ignition switch does not operate Description Check that vehicle is under the condition shown in “Conditions of vehicle” before starting diagnosis, and check each symptom. Note: The engine start function, door lock function, power distribution system, and nats-ivis/nvis ...

© 2014-2021 Copyright www.nisentra.com