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Home › Infiniti › 2003 › I35 › Repair and Diagnosis › Engine Performance › System › Engine Controls - Self-Diagnostics › Diagnostic Tests › DTC P0101: Mass Airflow Sensor Circuit Range/Performance Problem › DTC Confirmation Test "B" (Using CONSULT-II)

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

  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. Select DATA MONITOR mode with CONSULT-II. 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:
    • ENG SPEED: more than 2000 RPM.
    • THRTL SEN 1: more than 3 volts.
    • THRTL SEN 2: more than 3 volts.
    • Driving location: drive vehicle uphill to increase engine load.
  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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