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Home >> Nissan-Datsun >> 2003 >> Sentra Limited >> Repair and Diagnosis >> External Pages >> Different car >> Section 112 (Engine Controls Self-Diagnostics - Pathfinder) >> Diagnostic Tests >> DTC P0101: Mass Airflow Sensor - Range/Performance Problem >> DTC Confirmation Test Malfunction "B" (Using CONSULT-II)

DTC Confirmation Test Malfunction "B" (Using CONSULT-II)

WARNING: This page is about a different car, the 2003 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.
  1. Turn ignition on. Start engine and warm to normal operating temperature. If engine will not start, go to DIAGNOSTIC PROCEDURE . If engine starts, go to next step.
  2. On CONSULT-II, select DATA MONITOR mode. Observe MAS A/F SE B1 voltage while increasing engine speed to 4000 RPM. There should be a linear voltage increase in response to engine speed increase. If voltage is as specified, go to next step. If voltage is not as specified, go to DIAGNOSTIC PROCEDURE .
  3. Maintain the following conditions for at least 10 consecutive seconds:
    • Engine speed at 2000 RPM or more.
    • Throttle position angle of 3 volts or more (as observed on CONSULT-II).
    • Driving the vehicle uphill will help maintain engine load for the specified time period.
  4. If 1st trip DTC is detected, go to DIAGNOSTIC PROCEDURE . If 1st trip DTC is not detected, system is okay at this time.
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