1997 Mazda 626

1997 MAZDA 626
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UGARACECHICK
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1997 Mazda 626 4 cyl Manual

My Mazda 626 4 cylinder is running rough. I suspect the Mass Air Flow Sensor as the culprit. I need to know how to test a MAF sensor to see if it is working properly. Please help.
Jul 19, 2010 at 6:52 PM
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DAVE H
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MASS AIRFLOW (MAF) SENSOR
M/T (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 - 2.0L article. Repair as necessary. If wiring harness and connector are okay, replace MAF sensor.

MASS AIRFLOW (MAF) SENSOR VOLTAGE
Condition......Volts
2.0L M/T
Ignition On....1-1.5
Idle..............1.5-5
Jul 20, 2010 at 3:44 AM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.