LEMON Manuals: Even more car manuals for everyone
Home >> Nissan-Datsun >> 2004 >> Altima SE, Standard >> Repair and Diagnosis >> Engine Performance >> Engine Control System - 3.5L >> DTC P0127: IAT Sensor >> Diagnostic Procedure

Diagnostic Procedure

  1. CHECK GROUND CONNECTIONS 
    1. Turn ignition switch OFF.
    2. Loosen and retighten two engine ground screws. Refer to "GROUND INSPECTION ".

    OK or NG

    1. OK : GO TO 2.
    2. NG : Repair or replace ground connections.
      Fig 1: Retightening Two Engine Ground Screws
      G02885339Courtesy of NISSAN MOTOR CO., U.S.A.
  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 ".

    1. : INSPECTION END