Airflow Inspection
1. Remove the vacuum hose..
2. Blow air into the vacuum hose using your mouth from the vacuum pump side and verify that the air flows to the intake manifold side, then blow air from the intake manifold side and verify that the air does not flow to the vacuum pump side.

If there is any malfunction in the check valve, replace it with the vacuum hose as a single unit..
Air Bypass Valve Inspection [Mzr 2.3 Disi Turbo]
Compression Inspection [Mzr 2.0, Mzr 2.5]When charging cannot be carried out
If charging of the Subaru Solterra does not begin even after correctly
following the standard procedure, carefully review each of the following checks.
If any notification appears on the multi-information display, it should be used
as the primary reference for identifying the issue.
When char ...
Foot Brake
This vehicle has power-assisted brakes
that adjust automatically through normal
use.
Should power-assist fail, you can stop by
applying greater force than normal to the
brake pedal. But the distance required to
stop will be greater than usual.
WARNING
Do not coast with the engine ...
Positive Crankcase Ventilation (PCV) Valve Removal/Installation [Mzr 2.0, Mzr
2.5]
1. Remove the battery cover..
2. Disconnect the negative battery cable..
3. Remove the intake manifold and the fuel distributor component as a single
unit..
4. Remove in the order indicated in the table.
1
Oil separator
2
Retainer
...