CHECK MASS AIR FLOW AND INTAKE AIR TEMPERATURE SENSOR.

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

2) Place the shift lever in neutral 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:

• Subaru Select Monitor

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

• General scan tool

For detailed operation procedure, refer to the general scan tool operation manual.

QUESTION
Is the measured value 2.7 — 4.7 g/s (0.36 — 0.62 lb/m)?
Yes	No
	Replace the mass air flow and intake air temperature sensor.