VACUUM LINE INSPECTION

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Airflow Inspection

Between intake manifold and vacuum pump

1.  Remove the plug hole plate. (See PLUG HOLE PLATE REMOVAL/INSTALLATION [SKYACTIV-G 2.5T].)

2.  Remove the vacuum hose shown in the figure (between intake manifold and vacuum pump). (See VACUUM HOSE REMOVAL/INSTALLATION [L.H.D.].) (See VACUUM HOSE REMOVAL/INSTALLATION [R.H.D.].)

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3.  Blow air into the vacuum hose (between intake manifold and vacuum pump) 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.

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•  If there is any malfunction in the check valve (between intake manifold and vacuum pump), replace it with the vacuum hose (between intake manifold and vacuum pump) as a single unit. (See VACUUM HOSE REMOVAL/INSTALLATION [L.H.D.].) (See VACUUM HOSE REMOVAL/INSTALLATION [R.H.D.].)

Between vacuum pump and power brake unit

1.  Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.)

2.  Remove the following parts:

(1)  Plug hole plate (See PLUG HOLE PLATE REMOVAL/INSTALLATION [SKYACTIV-G 2.5T].)

(2)  Windshield wiper arm and blade (See WINDSHIELD WIPER ARM AND BLADE REMOVAL/INSTALLATION.)

(3)  Cowl grille (See COWL GRILLE REMOVAL/INSTALLATION.)

(4)  Windshield wiper motor and link (See WINDSHIELD WIPER MOTOR AND LINK REMOVAL/INSTALLATION.)

(5)  Keyless beeper (With advanced keyless entry system) (See KEYLESS BEEPER REMOVAL/INSTALLATION.)

(6)  Cowl panel (See COWL PANEL REMOVAL/INSTALLATION.)

(7)  Vacuum hose (between vacuum pump and power brake unit) (See VACUUM HOSE REMOVAL/INSTALLATION [L.H.D.].) (See VACUUM HOSE REMOVAL/INSTALLATION [R.H.D.].)

3.  Blow air into the vacuum hose (between vacuum pump and power brake unit) using your mouth from the power brake unit side and verify that the air flows to the vacuum pump side, then blow air from the vacuum pump side and verify that the air does not flow to the power brake unit side.

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•  If there is any malfunction in the check valve (between vacuum pump and power brake unit), replace it with the vacuum hose (between vacuum pump and power brake unit) as a single unit. (See VACUUM HOSE REMOVAL/INSTALLATION [L.H.D.].) (See VACUUM HOSE REMOVAL/INSTALLATION [R.H.D.].)