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Home >> Mazda >> 1997 >> MX-5 Miata Base, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System/Component Tests >> Engine Sensors & Switches >> Mass Airflow (MAF) Sensor >> Using Engine Signal Monitor

Using Engine Signal Monitor

Visually check MAF sensor for cracks or damage. Connect Engine Signal Monitor (49 9200 162A) to ECM/PCM, using proper overlay and adapter cables. Measure voltage at ECM/PCM terminal 3B. See the MASS AIRFLOW (MAF) SENSOR VOLTAGE  table. If voltage is not as specified, check wiring harness and connector between ECM/PCM and MAF sensor. See appropriate wiring diagram in WIRING DIAGRAMS article. Repair as necessary. If wiring harness and connector are okay, replace MAF sensor.

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