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Home >> Infiniti >> 2004 >> Q45 >> Repair and Diagnosis >> Engine Performance >> Engine Control System >> DTC P0101: MAF 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. 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.

    If NG, go to DIAGNOSTIC PROCEDURE  .

    If OK, go to following step.

    Fig 1: Procedure For Malfunction B With CONSULT-II
    G00760399Courtesy of NISSAN MOTOR CO., U.S.A.
  7. Maintain the following conditions for at least 10 consecutive seconds.
    Fig 2: Maintaining Conditions
    G00760400Courtesy of NISSAN MOTOR CO., U.S.A.
  8. If DTC is detected, go to DIAGNOSTIC PROCEDURE  .