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Home >> Nissan-Datsun >> 2008 >> Quest SL >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System - DTCS U1000 Through P0153 >> DTC P0101 MAF Sensor >> DTC Confirmation Procedure >> Procedure For Malfunction B >> With CONSULT-III
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With CONSULT-III

  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-III.
  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: MAS A/F SE-B1 Voltage Graph
    G04900186Courtesy of NISSAN MOTOR CO., U.S.A.
  7. Maintain the following conditions for at least 10 consecutive seconds.
    ENGINE SPEED REFERENCE

    ENG SPEED More than 2, 000 rpm
    THRTL SEN 1 More than 3V
    THRTL SEN 2 More than 3V
    Shift lever Suitable position
    Driving location Driving vehicle uphill (Increased engine load) will help maintain the driving conditions required for this test.
  8. Check 1st trip DTC.
  9. If 1st trip DTC is detected, go to "DIAGNOSTIC PROCEDURE ".
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