Engine Controls - Mass Air Flow (MAF) Sensor Inspection
Bulletin No: 01-009/12Last Issued: 03/12/2012
Subject:
MASS AIR FLOW (MAF) SENSOR INSPECTION PROCEDURE
BULLETIN NOTE
APPLICABLE MODEL(S)/VINS
2011-2013 Mazda22009-2013 Mazda6
2012-2013 Mazda32007-2012 Mazda CX-7
2012-2013 Mazda52006-2013 Mazda MX-5
DESCRIPTION
A recent Parts investigation has revealed that some non-defective mass air flow (MAF) sensors have been replaced as a result of improper inspection. In order to prevent this, the following inspection procedure has
been developed.
INSPECTION PROCEDURE
1. Connect the M-MDS, then turn the ignition ON.
2. Wait 30 seconds, then check PID "MAF" voltage and compare it with the maximum static voltage shown in the chart.
^ If MAF is equal to or more than the voltage shown in the chart, replace the MAF sensor.
^ If MAF is less than the voltage in the chart, go to the next step.
3. Remove the MAF sensor and visually check the MAF sensor wires for foreign material.
^ If any foreign material is found, replace the MAF sensor.
^ If no trouble is found, the MAF sensor is good and there is no need to replace. Refer to MASS AIR FLOW (MAF) INSPECTION PROCEDURE on MS3 or Workshop Manual section 01-40 for further inspection information.
Examples of foreign material: