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Home >> Subaru >> 1994 >> Legacy LSi, 4D Sedan >> Repair and Diagnosis >> Engine Performance >> Sensor Range Charts >> Engine Controls - Sensor Operating Range Charts >> Sensor Operating Range Charts >> Mass Airflow Sensor
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Mass Airflow Sensor

MASS AIRFLOW SENSOR RESISTANCE (1)

Terminal Specification
Red Wire & Ground 1 Megohm (Min.)
White Wire & Ground 1 Megohm (Min.)
Black Wire & Ground 1 Megohm (Min.)
Black/Red Wire & Ground Zero Ohms
(1) Measure resistance between specified terminal of airflow sensor connector and ground.
MASS AIRFLOW SENSOR VOLTAGE

Application (1) Volts
ECU Pin No. 8 & Ground (2)
Engine Off 10-13
At Idle 13-14
ECU Pin No. 9 & Ground (2)
Engine Off 0.0-0.3
At Idle 0.8-1.2
ECU Pin No. 10 & Ground (2)
Engine Off Zero
At Idle Zero
(1) Voltage should be greater when blowing air through inlet side of airflow meter.
(2) Connect voltmeter between indicated ECU terminal and a good known ground.