CHECK FRONT OXYGEN (A/F) SENSOR DATA.

1) Start the engine.

2) While observing the Subaru Select Monitor or general scan tool screen, warm-up the engine until engine coolant temperature is above 75°C (167°F). When the engine is already warmed-up, keep the engine idling for more one minute.

3) Read the data of front oxygen (A/F) sensor signal using Subaru Select Monitor or general scan tool.

NOTE:

• Subaru Select Monitor

For detailed operation procedures, 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 voltage 0.85 — 1.15 V?

Yes No