Mike's Workshop Manuals: Service manuals for every vehicle
Home >> Nissan-Datsun >> 2006 >> Altima SE-R, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - DTCS U1000 To P0153 (VQ35DE) >> DTC P0127 IAT Sensor >> Diagnostic Procedure

Diagnostic Procedure

  1. CHECK GROUND CONNECTIONS 
    1. Turn ignition switch OFF.
    2. Loosen and retighten three ground screws on the body.

      Refer to , "GROUND INSPECTION ".

      Fig 1: Locating M57, M61 & F14 Body Ground Screws
      G04166115Courtesy 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