CHECK VALVE OPERATION CHECK


1.
caution The check valve should not be removed from the vacuum hose.
Remove the vacuum hose (Refer to <LHD>, <RHD>).

2.
caution If the check valve is defective, replace it as an assembly unit together with the vacuum hose.
Check the operation of the check valve by using a vacuum pump.
Vacuum pump connection
Accept/reject criteria
Connection at the brake booster side (A)
A negative pressure (vacuum) is created and held.
Connection at the intake manifold side (B)
A negative pressure (vacuum) is not created.