Check Valve Operation Check
WARNING: This page is about a different variant/trim than selected.
CAUTION:
The check valve should not be removed from the vacuum hose.
- Remove the vacuum hose. (Refer to MASTER CYLINDER ASSEMBLY AND BRAKE BOOSTER
.)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 AND CRITERIA REFERENCE
| VACUUM PUMP CONNECTION | 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. |