Airflow Meter: Subaru
Remove rubber cover from electrical connector on airflow meter. Leave connector connected. Connect volt/ohmmeter between terminals and record readings. See SUBARU AIRFLOW METER RESISTANCE table. If readings are not to specifications, check electrical wiring. If wiring is okay, replace airflow sensor.
NOTE:
Do not start engine during this test. Place the ignition switch in the "OFF" or "ON" position as indicated.
SUBARU AIRFLOW METER RESISTANCE
| Ign. Sw. | Wire Colors | Readings | |
|---|---|---|---|
| SPFI | |||
| Off | Black-Ground | 0-10 Ohms | |
| On | Red-Ground | 10 Volts Min. | |
| On | White-Black | .1-.5 Volts | |
| MPFI | |||
| Off | Black-Ground | 0-10 Ohms | |
| Off | Brown-Ground | 0-10 | |
| On | Red-Ground | 10 Volts Min. | |
| On | White-Brown | 1-2 Volts | |