1. Remove the vacuum hose..
2. Verify that air can be blown from the power brake unit side of the vacuum hose towards the vacuum pump side, and that air cannot be blown in the opposite direction.

If there is any malfunction of the inner check valve, replace it together with the vacuum hose as a single unit.
Vacuum Hose Removal/Installation
Vacuum Pump InspectionOil Control Valve (OCV) Removal/Installation [Skyactiv G 2.0]
WARNING:
A hot engine can cause severe burns. Turn off the engine and wait until it
is cool before servicing.
1. Disconnect the negative battery cable..
2. Remove the plug hole plate..
3. Remove the ignition coil/ion sensors..
4. Remove the cylinder head cover..
5. Remove in ...
Speaker Grille Removal/Installation
Center Speaker Grille
1. Insert a tape-wrapped flathead screwdriver into shown in the figure and remove
hooks A in the direction of arrow (1).
2. Take the shaded area shown in the figure, and remove the center speaker grille
in the direction of arrow (2) while detaching hooks B.
3. ...
Rear Body Control Module (Rbcm) Inspection
1. Disconnect the negative battery cable..
2. Remove the following parts:
a. Trunk board.
b. Trunk end trim.
c. Rear scuff plate (LH).
d. Trunk side trim (LH).
3. Remove the rear body control module (RBCM) from the body with the connector
connected..
4. Connect the negative battery c ...