Mike's Workshop Manuals: Service manuals for every vehicle
Home >> Nissan-Datsun >> 2005 >> Sentra SE-R >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 2 (Engine Control System (QG18DE)) >> DTC P0101: MAF Sensor >> Diagnostic Trouble Codes Confirmation Procedure >> Procedure For Malfunction B

Procedure For Malfunction B

WARNING: This page is about a different variant/trim than selected.
CAUTION: Always driver 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.
    Fig 1: Engine Speed Versus MAF Sensor Linear Voltage Graph
    G02449770Courtesy 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.
    ENGINE SPEED/DRIVING CONDITION SPECIFICATIONS

    ENG SPEED More than 2, 000 rpm
    THRTL SEN 1 More than 3.0V
    THRTL SEN 2 More than 3.0V
    Selector lever Suitable position
    Driving location Driving vehicle uphill (Increased engine load) will help maintain the driving conditions required for this test.
  8. Fig 2: CONSULT-II - DATA MONITOR Mode
    G02449771Courtesy of NISSAN MOTOR CO., U.S.A.
  9. If 1st trip DTC is detected, go to DIAGNOSTIC PROCEDURE .