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Home >> Infiniti >> 2003 >> M45 >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transaxle >> DTC P1705: Throttle Position Sensor >> Diagnostic Procedure

Diagnostic Procedure

  1. CHECK DTC WITH ECM 

    With CONSULT-II 

    1. Turn ignition switch to "ON" position. (Do not start engine.)
    2. Select "SELF-DIAG RESULTS" mode for "ENGINE" with CONSULT-II. Refer to "CONSULT-II FUNCTIONS ".

    OK or NG 

    OK >> GO TO 2.

    NG >> Check the DTC detected item. Go to "CONSULT-II FUNCTIONS ".

    • If CAN communication line is detected, go to "DTC U1000: CAN COMMUNICATION LINE ".
      Fig 1: Checking DTC With ECM (Consult II) Display (1 Of 2)
      G02021394Courtesy of NISSAN MOTOR CO., U.S.A.
  2. CHECK DTC WITH TCM 

    With CONSULT-II 

    1. Turn ignition switch to "ON" position. (Do not start engine.)
    2. Select "ECU INPUT SIGNALS" in "DATA MONITOR" mode for "A/T" with CONSULT-II.
    3. Depress accelerator pedal and read out the value of "ACCLEPOS" and "THROTTLE POSI".

      Check engine speed changes according to throttle position.

    4. Select "SELF-DIAG RESULTS" mode for "A/T" with CONSULT-II. Refer to "CONSULT-II ".

    OK or NG 

    OK >> GO TO 3.

    NG >> Repair or replace damaged parts.

    Fig 2: Checking DTC With ECM (Consult II) Display (2 Of 2)
    G02021395Courtesy of NISSAN MOTOR CO., U.S.A.
  3. CHECK DTC 

    Perform "DTC Confirmation Procedure". Refer to "DTC CONFIRMATION PROCEDURE ".

    OK >> INSPECTION END 

    NG >> GO TO 4.

  4. PERFORM TCM INSPECTION 
    1. Perform TCM input/output signal inspection.
    2. If NG, recheck TCM pin terminals for damage or loose connection with harness connector.

    OK or NG 

    OK >> INSPECTION END 

    NG >> Repair or replace damaged parts.