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Home >> Nissan-Datsun >> 2004 >> Frontier Desert Runner SE >> Repair and Diagnosis >> Engine Performance >> Engine Control System - VG33E >> DTC P0121: TP Sensor >> DTC Confirmation Procedure >> Procedure For Malfunction B
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Procedure For Malfunction B

CAUTION: Always drive vehicle at a safe speed.

With CONSULT-II 

  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.
    1. If NG, go to "DIAGNOSTIC PROCEDURE ".
    2. If OK, go to following step.
      Fig 1: Reading "THRTL POS SEN" And "ABSOL TH.P/S" In "DATA MONITOR" Mode
      G00742727Courtesy of NISSAN MOTOR CO., U.S.A.
      Fig 2: "THRTL POS SEN" And "ABSOL TH.P/S" Graph
      G00742728Courtesy 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: Conditions Chart
    G00742730Courtesy of NISSAN MOTOR CO., U.S.A.
    Fig 4: Reading "Data Monitor"
    G00742729Courtesy of NISSAN MOTOR CO., U.S.A.
  10. If 1st trip DTC is detected, go to "DIAGNOSTIC PROCEDURE ".

With GST 

Follow the procedure "With CONSULT-II".