Combi-Valve and Check Valve, Checking

COMBI-VALVE AND CHECK VALVE, CHECKING

Special tools, testers and auxiliary items
- VAG 1390 hand vacuum pump

Test sequence





- Disconnect vacuum hose -1- from secondary air injection solenoid valve -2-.
- Connect VAG 1390 hand vacuum pump to vacuum hose -1-.





- Disconnect pressure hose (arrow) from check valve.

WARNING! Do not use compressed air during the following check!

- Connect auxiliary hose to check valve and blow into it.

- Valve must be closed.

- Operate hand vacuum pump.

- Combi-valve must open.