LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Infiniti >> 2021 >> QX50 Essential, FWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (DTC/Circuit Diagnosis) (4 Of 5) >> DTC/Circuit Diagnosis >> DTC P2004: Intake Manifold Runner Control Valve >> DTC Description >> DTC Confirmation Procedure
April 5, 2026: LEMON Manuals is launched! Read the announcement.

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:

    • Before performing the following procedure, confirm that battery voltage is more than 11 V at idle.
    • Always perform the test at a temperature above 60 deg.C (140 deg.F)

    GO TO 2.

  2. PERFORM DTC CONFIRMATION PROCEDURE 
    1. Turn ignition switch ON.
    2. Select "DATA MONITOR" mode using CONSULT.
    3. Make sure that "COOLANT TEMP/S" indicates 60 deg.C (140 deg.F) or more. If not, cool engine down or warm engine up until "COOLANT TEMP/S" indicates 60 deg.C (140 deg.F) or more. Then go to the following steps.
    4. Fully release accelerator pedal and wait at least 10 seconds.
    5. Depress accelerator pedal and wait at least 10 seconds.
    6. Check 1st trip DTC.

    Is 1st trip DTC detected?

    YES

    Proceed to Diagnosis Procedure .

    NO

    To check malfunction symptom before repair: Refer to Intermittent Incident .

    NO

    Confirmation after repair: INSPECTION END

scientia non olet · About LEMON Manuals