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Home >> Nissan-Datsun >> 2005 >> Altima SE-R, Standard >> Repair and Diagnosis >> Engine Performance >> Engine Control System - VQ35DE >> DTC P0101: MAF Sensor >> DIAGNOSTIC TROUBLE CODES 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 warm it up to normal operating temperature.
  4. Run engine for at least 10 seconds at idle speed.
  5. If 1st trip DTC is detected, go to "DIAGNOSTIC PROCEDURE "
    Fig 1: Identifying Consult-II Data Monitor
    G02525619Courtesy of NISSAN MOTOR CO., U.S.A.


  1. Turn ignition switch ON.
  2. Start engine and warm it up to normal operating temperature.
  3. If engine cannot be started, go to  "DIAGNOSTIC PROCEDURE ".
  4. Select "DATA MONITOR" mode with CONSULT-II.
  5. Check the voltage of "MAS A/F SE-B1" with "DATA MONITOR".
  6. Increases engine speed to about 4, 000 RPM.
  7. Monitor the linear voltage rise in response to engine speed increases.

    If NG, go to "DIAGNOSTIC PROCEDURE ".

    If OK, go to following step.

    Fig 1: Voltage Reference Graph
    G02525620Courtesy of NISSAN MOTOR CO., U.S.A.
  8. Maintain the following conditions for at least 10 consecutive seconds.
    ENGINE SPEED REFERENCE

    ENG SPEED More than 2000 rpm
    THRTL SEN 1 More than 3V
    THRTL SEN 2 More than 3V
    Shift lever Suitable position
    Driving location Driving vechicle uphill (increased engine load)will help maintain the driving conditoin required for this test.
    Fig 2: Identifying Consult-II Data Monitor
    G02525621Courtesy of NISSAN MOTOR CO., U.S.A.
  9. If 1st trip DTC is detected, go to "DIAGNOSTIC PROCEDURE "
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