Air Flow Meter/Sensor: Testing and Inspection
MASS AIR FLOW SENSOR1. Turn ignition switch "ON".
2. Start engine and warm it up to normal operating temperature.
3. Check voltage between PCM terminal 61 (Mass air flow sensor signal) and ground.
4. If the voltage is out of specification, disconnect mass air flow sensor harness connector and connect it again. Repeat above check.
5. If NG, remove mass air flow sensor from air duct. Check hot film for damage or dust.