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 InspectionSupplemental Restraint System Components
1 Driver/Front passenger inflators and air bags
2 Roll-over sensorí, crash sensors, and diagnostic module (SAS unit)
3 Front seat belt pretensioners
4 Front air bag sensors
5 Side crash sensors
6 Air bag/front seat belt pretensioner system warning light
7 Side and curtain inflators ...
Camshaft Position (CMP) Sensor Inspection
Intake CMP Sensor
Visual inspection
CAUTION:
When replacing the CMP sensor, make sure there is no foreign material on
it such as metal shavings. If it is installed with foreign material, the sensor
output signal will malfunction resulting from fluctuation in magnetic flux and
caus ...
Liftgate
WARNING
Never allow a person to ride in the luggage compartment:
Allowing a person to ride in the luggage compartment is dangerous.
The person in the luggage compartment could be seriously injured or killed during
sudden braking or a collision.
Do not drive with the liftgate open:
Exhaust gas ...