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Home >> Nissan-Datsun >> 2004 >> Sentra SE-R >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - Qr25DE >> DTC P0101: MAF Sensor >> Diagnostic Trouble Code (DTC) Confirmation Procedure >> Procedure For Malfunction B >> With CONSULT-II
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With CONSULT-II

  1. Turn ignition switch ON.
  2. Start engine and warm it up to normal operating temperature.

    If engine cannot be started,  go to "DIAGNOSTIC PROCEDURE ".

  3. Select "DATA MONITOR" mode with CONSULT-II.
  4. Check the voltage of "MAS A/F SE-B1" with "DATA MONITOR".
  5. Increases engine speed to about 4, 000 RPM.
  6. Monitor the linear voltage rise in response to engine speed increases.
    Fig 1: Checking Voltage Of MAS A/F SE-B1
    G00776919Courtesy of NISSAN MOTOR CO., U.S.A.

    If NG, go to "DIAGNOSTIC PROCEDURE ".

    If OK, go to following step.

  7. Maintain the following conditions for at least 10 consecutive seconds.
    Fig 2: View Of Data Monitor Mode & Conditions
    G00776921Courtesy of NISSAN MOTOR CO., U.S.A.
    Fig 3: Engine Speed, Throttle Sensor, Selector Lever & Driving Location Specifications
    G00776920Courtesy of NISSAN MOTOR CO., U.S.A.
  8. If DTC is detected, go to "DIAGNOSTIC PROCEDURE ".