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Home › Nissan-Datsun › 2004 › Xterra SE, RWD › Repair and Diagnosis › Engine Performance › System › Engine Control System - VG33E › DTC P0121: TP Sensor › DTC Confirmation Procedure › With Consult-II

With Consult-II

  1. Turn ignition switch ON.
  2. Select "DATA MONITOR" mode with CONSULT-II.
  3. Start engine and let it idle for at least 10 seconds.

    If idle speed is over 1, 00 RPM, maintain the following conditions for at least 10 seconds to keep engine speed below 1, 00 RPM.

    Fig 1: Lever Specification
    G00869377Courtesy of NISSAN MOTOR CO., U.S.A.
    Fig 2: Displaying DATA MONITOR Mode
    G00869378Courtesy of NISSAN MOTOR CO., U.S.A.
  4. If 1st trip DTC is detected, go to Diagnostic Procedure .


  1. Start engine and warm it up to normal operating temperature.
  2. Turn ignition switch OFF and wait at least 5 seconds.
  3. Turn ignition switch ON.
  4. Select "MANU TRIG" in "DATA MONITOR" mode with CONSULT-II.
  5. Select "THRTL POS SEN" and "ABSOL TH.P/S" in "DATA MONITOR" mode with CONSULT-II.
  6. Press RECORD on CONSULT-II screen at the same time accelerator pedal is depressed.
  7. Print out the recorded graph and check the following:
    • The voltage rise is linear in response to accelerator pedal depression.
    • The voltage when accelerator pedal is fully depressed is approximately 4V.

      If NG, go to Diagnostic Procedure .

      If OK, go to following step.

    Fig 1: Displaying DATA MONITOR Mode
    G00869379Courtesy of NISSAN MOTOR CO., U.S.A.
    Fig 2: Throttle Position Sensor Graph
    G00869380Courtesy of NISSAN MOTOR CO., U.S.A.
  8. Select "AUTO TRIG" in "DATA MONITOR" mode with CONSULT-II.
  9. Maintain the following conditions for at least 10 consecutive seconds.
    Fig 3: RPM Specification
    G00869381Courtesy of NISSAN MOTOR CO., U.S.A.
    Fig 4: Displaying DATA MONITOR Mode
    G00869382Courtesy of NISSAN MOTOR CO., U.S.A.
  10. If 1st trip DTC is detected, go to Diagnostic Procedure .
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