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Home >> Subaru >> 1992 >> Justy Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System/Component Tests >> Engine Sensors & Switches >> Airflow Sensor
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Airflow Sensor

Remove rubber cover from electrical connector on airflow sensor. Leave connector connected. Connect DVOM between terminals and record readings. See AIRFLOW SENSOR SPECIFICATIONS  table. If readings are not as specified, check electrical wiring. If wiring is okay, replace airflow sensor.

NOTE: DO NOT  start engine unless specified. Place ignition switch in OFF or ON position as indicated.
NOTE: Airflow sensor test specifications for Justy are not available from manufacturer.
AIRFLOW SENSOR SPECIFICATIONS

Ign. Switch Wire Colors Readings
Legacy
Key On Red & Black/Red 10-13 Volts
Engine On Red & Black/Red 13-14 Volts
Key On Black & Black/Red 0-0.3 Volt
Engine On Black & Black/Red 0.8-1.2 Volts
Key On White & Black/Red Zero Volts
Engine On White & Black/Red Zero Volts
Loyale
Key Off Black & Ground 0-10 Ohms
Key On Red & Ground 10 Volts Min.
Key On White & Black (1) .1-.5 Volt
SVX
Key On Black/Red 10-13 Volts
Key On White 0-0.3 Volts
Key On Black Zero Volts
Engine On Black/Red 13-14 Volts
Engine On White 0.8-1.2 Volts
Engine On Black Zero Volts
(1) Voltage should be higher when blowing air from air cleaner side.