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Home >> Infiniti >> 2024 >> QX80 Premium Select, AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (DTCS) (3 Of 4) >> Engine (ECM) >> DTC P0452: EVAP Control System Pressure Sensor >> Confirmation Procedure
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Confirmation Procedure

  1. PRECONDITIONING 
    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:

    Always perform test at a temperature of 5°C (41°F) or more.

    >>

    GO TO 2.

  2. PERFORM DTC CONFIRMATION PROCEDURE SYMBOL
    1. Start engine and warm it up to normal operating temperature.
    2. Turn ignition switch OFF and wait at least 10 seconds.
    3. Turn ignition switch ON.
    4. Turn ignition switch OFF and wait at least 10 seconds.
    5. Turn ignition switch ON.
    6. Select "DATA MONITOR" mode With CONSULT:
    7. Check that "FUEL T/TMP SE" is more than 0°C (32°F).
    8. Start engine and wait at least 20 seconds.
    9. Check 1st trip DTC.

    SYMBOL With GST:

    1. Start engine and warm it up to normal operating temperature.
    2. Set voltmeter probes to ECM harness connector terminals under the following conditions.
      ECM
      Connector + -
      Terminal Terminal
      E20 128
      (Fuel tank temperature sensor signal)
      152
    3. Check that the voltage is less than 4.2 V.
    4. Turn ignition switch OFF and wait at least 10 seconds.
    5. Turn ignition switch ON.
    6. Turn ignition switch OFF and wait at least 10 seconds.
    7. Start engine and wait at least 20 seconds.
    8. Check 1st trip DTC.

    Is 1st trip DTC detected?

    YES>>

    Refer to DTC Diagnosis Procedure .

    NO>>

    INSPECTION END