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Home >> Infiniti >> 2004 >> Q45 >> Repair and Diagnosis >> Engine Performance >> Engine Control System >> DTC P1448: EVAP Canister Vent Control Valve >> Component Inspection >> EVAP Canister Vent Control Valve

EVAP Canister Vent Control Valve

With CONSULT-II 

  1. Remove EVAP canister vent control valve from EVAP canister.
  2. Check portion B of EVAP canister vent control valve for being rusted.
  3. Reconnect harness connectors disconnected.
  4. Turn ignition switch ON.
  5. Perform "VENT CONTROL/V" in "ACTIVE TEST" mode.
  6. Check air passage continuity and operation delay time.
  7. Clean the air passage (Portion A  to B  ) of EVAP canister vent control valve using an air blower.
  8. Perform Test No. 9. CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR  again.
    Fig 1: Checking Air Passage
    G00761169Courtesy of NISSAN MOTOR CO., U.S.A.

With GST 

  1. Remove EVAP canister vent control valve from EVAP canister.
  2. Check portion B  of EVAP canister vent control valve for being rusted.
  3. Check air passage continuity and operation delay time under the following conditions.

    Make sure new O-ring is installed properly. 

  4. Clean the air passage (Portion A  to B  ) of EVAP canister vent control valve using an air blower.
  5. Perform Test No. 9. CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR  again.
    Fig 2: Checking EVAP canister vent control valve Without CONSULT-II
    G00761171Courtesy of NISSAN MOTOR CO., U.S.A.