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Home >> Infiniti >> 2008 >> FX35 AWD >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System - DTCS U1000 Through P0153 (VQ35DE) >> DTC P0127 IAT Sensor >> Diagnostic Procedure
July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Diagnostic Procedure

  1. CHECK GROUND CONNECTIONS 
    1. Turn ignition switch OFF.
    2. Loosen and retighten ground screw on the body. Refer to "GROUND INSPECTION ".
    Fig 1: Identifying Body Ground, Steering Column And Blower Motor
    G05216304Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    OK: GO TO  2.

    NG: Repair or replace ground connections.

  2. CHECK INTAKE AIR TEMPERATURE SENSOR 

    Refer to "COMPONENT INSPECTION ".

    OK or NG 

    OK: GO TO  3.

    NG: Replace mass air flow sensor (with intake air temperature sensor).

  3. CHECK INTERMITTENT INCIDENT 

    Refer to "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT ".

    Refer to "WIRING DIAGRAM ".

    >> INSPECTION END