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Home >> Infiniti >> 2008 >> QX56 AWD >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System - DTCS P1148 To P2A03 >> DTC P1226: TP Sensor >> Diagnosis Procedure
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Diagnosis Procedure

  1. CHECK ELECTRIC THROTTLE CONTROL ACTUATOR VISUALLY
    1. Turn ignition switch OFF.
    2. Remove the intake air duct.
    3. Check if foreign matter is caught between the throttle valve and the housing.

    OK or NG 

    OK: GO TO 2.

    NG: Remove the foreign matter and clean the electric throttle control actuator inside.

    Fig 1: Identifying Electric Throttle Control Actuator And Throttle Valve
    G05739604Courtesy of NISSAN MOTOR CO., U.S.A.
  2. REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR
    1. Replace the electric throttle control actuator.
    2. Perform "THROTTLE VALVE CLOSED POSITION LEARNING ".
    3. Perform "IDLE AIR VOLUME LEARNING ".

      INSPECTION END