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 InspectionRear Drive Shaft
Purpose, Function
Engine noise and vibration have been reduced due to adoption of a bell joint
on the wheel side of the constant velocity joint.
A low noise and vibration double offset joint with low slide resistance has
been adopted for the differential side of the constant vel ...
Keyless Antenna [Keyless Entry System]
Purpose
Outputs a request signal and specifies the remote transmitter location.
Function
The keyless antennas output request signals based on the signals from the
start stop unit.
Construction, Operation
Request signals are output by the keyless antenna installed ...
Turn and Lane-Change Signals
NOTE
• If an indicator light stays on without
flashing or if it flashes abnormally, one of the turn signal bulbs may be burned
out.
• A personalized function is available to change
the turn indicator sound volume.
Refer to Personalization Features on .
Turn Signals
Move the signal lev ...