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HOMESERVICE MANUALSINFINITI2008EX35 BASE, AWDREPAIR AND DIAGNOSISENGINE PERFORMANCEENGINE CONTROL SYSTEMSENGINE CONTROL SYSTEM - DTCS P0451 TO P1212P0452 EVAP CONTROL SYSTEM PRESSURE SENSORDTC LOGICDTC CONFIRMATION PROCEDURE
2008 Infiniti EX35 Base, AWD

DTC Confirmation Procedure

2008 Infiniti EX35 Base, AWDSECTION DTC Confirmation Procedure
  1. PRECONDITIONING

    If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test.

    TESTING CONDITION: 

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

    GO TO 2.

  2. PERFORM DTC CONFIRMATION PROCEDURE

    With CONSULT-III 

    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. Select "DATA MONITOR" mode with CONSULT-III.
    5. Check that "FUEL T/TMP SE" is more than 0°C (32°F).
    6. Start engine and wait at least 20 seconds.
    7. Check 1st trip DTC.

    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.
      VOLTMETER DESCRIPTION

      ECM
      Connector + -
      Terminal Terminal
      M107 106 (Fuel tank temperature sensor signal) 128
    3. Check that the voltage is less than 4.2 V.
    4. Turn ignition switch OFF and wait at least 10 seconds.
    5. Start engine and wait at least 20 seconds.
    6. Check 1st trip DTC.

    Is 1st trip DTC detected? 

    YES: Go 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.