Air Flow Meter/Sensor: Testing and Inspection
COMPONENT INSPECTIONMass Air Flow Sensor
1. Turn ignition switch "ON".
2. Start engine and warm it up to normal operating temperature.
3. Check voltage between ECM terminals (47) and around.
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 wire for damage or dust.