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Home >> Infiniti >> 2005 >> G35 x >> Repair and Diagnosis (Single Page) >> Engine Performance >> Engine Control System - Sedan >> DTC P0127: IAT Sensor >> Diagnostic Procedure

Diagnostic Procedure

  1. CHECK GROUND CONNECTIONS 
    1. Turn ignition switch OFF.
    2. Loosen and retighten two ground screws on the body. Refer to "Ground Inspection ".
      Fig 1: Checking Ground Connections
      G02348411Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    1. OK: GO TO 2.
    2. NG: Repair or replace ground connections.
  2. CHECK INTAKE AIR TEMPERATURE SENSOR 

    Refer to "Component Inspection ".

    OK or NG 

    1. OK: GO TO 3.
    2. 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 ".

    1. : INSPECTION END