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HOMESERVICE MANUALSINFINITI2019Q70 3.7 LUXE, AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT VARIANT/TRIMSECTION 11 (ENGINE CONTROL SYSTEM (5.6L) (DTC/CIRCUIT DIAGNOSIS) (5 OF 9))DTC/CIRCUIT DIAGNOSISDTC P0453: EVAP CONTROL SYSTEM PRESSURE SENSORDTC LOGICDTC CONFIRMATION PROCEDURE
2019 Infiniti Q70 3.7 Luxe, AWD

DTC Confirmation Procedure

2019 Infiniti Q70 3.7 Luxe, AWDSECTION DTC Confirmation Procedure
WARNING: This page is about a different variant/trim than selected.
  1. PRECONDITIONING 

    If DTC Confirmation Procedure has been previously conducted, always perform the following procedure before conducting the next test.

    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 deg.C (41 deg.F) or more.

    GO TO 2 .

  2. PERFORM DTC CONFIRMATION PROCEDURE 

    SYMBOL WITH CONSULT

    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 deg.C (32 deg.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

      Ground

      Connector

      +

      Connector

      -

      Terminal

      Terminal

      M56

      128

      (Fuel tank temperature sensor signal)

      F116

      10
    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

    Proceed to Diagnosis Procedure .

    NO

    INSPECTION END

RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.