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 Cooler [Fw6 A EL, Fw6 Ax EL]
Purpose/Function
The oil cooler constantly maintains maximum ATF performance in the transaxle
by maintaining an optimum ATF temperature which has the effect of achieving
reduced fuel consumption.
Construction/Operation
The oil cooler performs the following operations accord ...
Car Navigation System Does Not Operation [Car Navigation System]
Possible DTC
Even if the map screen is touched, the car-navigation system cannot be
operated
POSSIBLE CAUSE
Audio unit malfunction (bad LCD panel)
Car-navigation unit malfunction
Diagnosti ...
Air Bag System [Two Step Deployment Control System]
Outline
The air bag system is a device that supplements the passenger restraint function
of the seat belts. The air bag system will not have the designed effect if the
seat belts are not worn properly.
The air bag system is composed of the following parts:
...