FixVault
Home › Nissan-Datsun › 2004 › Sentra Base, Automatic › Repair and Diagnosis › Engine Performance › System › Engine Control System - QG18DE › DTC P1446: EVAP Canister Vent Control Valve › DTC Confirmation Procedure

DTC Confirmation Procedure

CAUTION: Always drive vehicle at a safe speed.
NOTE: If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test.

WITH CONSULT-II 

  1. Turn ignition switch ON and wait at least 5 seconds.
  2. Turn ignition switch OFF and wait at least 10 seconds.
  3. Turn ignition switch ON and select "DATA MONITOR" mode with CONSULT-II.
    Fig 1: Displaying DATA MONITOR Mode
    G00773251Courtesy of NISSAN MOTOR CO., U.S.A.
  4. Start engine and let it idle for at least 1 minute.
  5. Repeat next procedure 3 times.
    1. Increase the engine speed up to 3, 000 to 3, 500 RPM and keep it for 2 minutes and 50 seconds to 3 minutes.

      Never exceed 3 minutes. 

    2. Fully released accelerator pedal and keep engine idle for about 5 seconds.
  6. If 1st trip DTC is detected, go to DIAGNOSTIC PROCEDURE .
  7. If 1st trip DTC is not detected, go to the next step.
  8. Repeat next procedure 20 times.
    1. Quickly increase the engine speed up to 4, 000 to 4, 500 RPM or more and keep it for 25 to 30 seconds.
    2. Fully released accelerator pedal and keep engine idle for at least 35 seconds.
    Fig 2: Engine Idle Graph
    G00773252Courtesy of NISSAN MOTOR CO., U.S.A.
  9. If 1st trip DTC is detected, go to DIAGNOSTIC PROCEDURE .

WITH GST 

Follow the procedure "WITH CONSULT-II" above.

About FixVault