Air Flow Meter/Sensor: Testing and Inspection

Component Inspection

MASS AIR FLOW SENSOR
1. Turn ignition switch ON.
2. Start engine and warm it up to normal operating temperature.







3. Check voltage between ECM terminal 54 (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 wire for damage or dust.

Component Inspection

MASS AIR FLOW SENSOR

WITH CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Check "MASS AIR FLOW" in "DATA MONITOR" mode with CONSULT-II.
at idling: 0.9 - 5.8 g.m/sec
at 2,500 rpm : 7.5 - 13.2 g.m/sec

WITH GST
1. Start engine and warm it up to normal operating temperature.
2. Check mass air flow sensor signal in MODE 1 with GST.
at idling : 0.9 - 5.8 g.m/sec
at 2,500 rpm : 7.5 - 13.2 g.m/sec