CHECK CURRENT DATA.

1) Start the engine.

2) Read the data of 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 temperature less than −36°C (−33°F)?

Yes No

Repair the poor contact.

NOTE:

In this case, repair the following item:

• Poor contact in mass air flow and intake air temperature sensor

• Poor contact in ECM

• Poor contact of joint connector