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Home >> Infiniti >> 2024 >> QX80 Luxe, AWD >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System (2 Of 2) >> Component /Circuit Diagnosis >> EVAP Canister Vent Control Valve >> Component Inspection
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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).
    GNSDB145516Courtesy 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 EVAP CANISTER : Exploded View .

  2. CHECK EVAP CANISTER VENT CONTROL VALVE-2 SYMBOL
    1. Turn iginition 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.

    Where is leakage point?

    Port (C)>>

    Replace EVAP canister vent control valve. Refer to EVAP CANISTER : Exploded View .

    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 EVAP CANISTER : Exploded View .

    NO>>

    Replace the EVAP canister or EVAP canister vent control valve if crack, damage, or unusual conditions are found.