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Home >> Infiniti >> 2024 >> QX60 Autograph, AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (DTC/Circuit Diagnosis) (4 Of 6) >> DTC/Circuit Diagnosis >> DTC P0450: EVAP Control System Pressure Sensor >> Component Inspection

Component Inspection

  1. CHECK EVAP CANISTER VENT CONTROL VALVE-1 
    1. Disconnect hose from (A), (B), and (C) with remaining harness connector connected.
    2. Block port (B).
    3. Blow air into port (A) and check that it flows freely out of port (C).
    GNSDB140237Courtesy of NISSAN NORTH AMERICA, INC.

    Is sufficient air flowed from port (C)?

    YES>>

    GO TO 2.

    NO>>

    Replace EVAP canister vent control valve. Refer to Removal and Installation .

  2. CHECK EVAP CANISTER VENT CONTROL VALVE-2 

    SYMBOL With CONSULT

    1. Turn ignition switch ON.
    2. Perform "VENT CONTROL/V" in "ACTIVE TEST" mode of "ENGINE" using CONSULT and select "ON" to close EVAP canister vent control valve.
    3. Block port (B).
    4. Blow air into port (A) and check that where is leakage point of air.
    GNSDB140237Courtesy of NISSAN NORTH AMERICA, INC.

    Where is leakage point?

    Port (C)>>

    Replace EVAP canister vent control valve. Refer to Removal and Installation .

    Between EVAP canister vent control valve and EVAP canister>>

    GO TO 3.

    No air leakage>>

    INSPECTION END

  3. CHECK EVAP CANISTER VENT CONTROL VALVE-3 

    Visually check connection portion between EVAP canister vent control valve and EVAP canister for cracks and damage.

    Is the inspection result normal?

    YES>>

    Replace EVAP canister and EVAP canister vent control valve. Refer to Removal and Installation .

    NO>>

    Replace EVAP canister. Refer to Removal and Installation .