CHECK MASS AIR FLOW AND INTAKE AIR TEMPERATURE SENSOR SIGNAL.

1) Start the engine and warm-up engine until coolant temperature is higher than 60°C (140°F).

2) Place the select lever in “N” or “P” position.

3) Turn the A/C switch to OFF.

4) Turn all the accessory switches to OFF.

5) Read the data of mass air flow and intake air temperature sensor signal using Subaru Select Monitor or general scan tool.

NOTE:

For detailed operation procedure, refer to “READ CURRENT DATA FOR ENGINE”.

QUESTION

Is the measured value 2.1 — 3.4 g/s (0.28 — 0.45 lb/m)?

Yes No

Replace the mass air flow and intake air temperature sensor.