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Home >> Infiniti >> 2012 >> FX35 AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 211 (Engine Control System (VQ35HR) - FX35 - DTC U0101, U0164, U1001, & P0011 Through P0133 / P0153) >> DTC P0037, P0038, P0057, P0058: Ho2S2 Heater >> DTC Logic >> DTC Confirmation Procedure

DTC Confirmation Procedure

WARNING: This page is about a different car, the 2011 Infiniti FX35. However, it is still accessible from the selected car via links, so may be relevant.
  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: 

    Before performing the following procedure, confirm that battery voltage is between 11 V and 16 V at idle. 

    GO TO 2.

  2. PERFORM DTC CONFIRMATION PROCEDURE
    1. Start engine and warm it up to the 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. Start engine and keep the engine speed between 3,500 and 4,000 RPM for at least 1 minute under no load.
    6. Let engine idle for 1 minute.
    7. Check 1st trip DTC.

    Is 1st trip DTC detected? 

    YES: Go to "DIAGNOSIS PROCEDURE ".

    NO: INSPECTION END

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