1998 Mazda 626 LX Air Flow Meter/ Sensor Using the NGS Tester

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Filed Under (Mazda) by admin on 19-11-2010

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1. Check the mass air flow sensor for damage and cracks. 2. Connect the New Generation Star tester to the data link connector. 3. Turn the ignition switch to ON. 4. Select the “PID/DATA MONITOR AND RECORD” function on the NGS tester display and press TRIGGER. 5. Select “MAF V” on the NGS tester display and press START. The NGS tester measures and show the voltage. 6. If not as specified, inspect the following. (1) Harness continuity Between PCM terminal 88 and mass air flow sensor terminal E Between PCM terminal 36 and mass air flow sensor terminal D Between PCM terminal 103 and mass air flow sensor terminal C Between main relay terminal E and mass air flow sensor terminal B (2) Terminal voltage Mass air flow sensor terminal B voltage: Battery positive voltage Mass air flow sensor terminal C voltage: Below 1.0 V 7. If the terminal voltage is correct and there is harness continuity, replace the mass air flow sensor.

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