Combi-Valve, Checking

Combi-Valve, Checking

Special tools, testers and auxiliary items required







- Hand vacuum pump V.A.G 1390

Test conditions
- Vacuum lines and hose connections free of leaks
- Vacuum lines not blocked or kinked

Test sequence







- Pull vacuum hose from Secondary Air Injection (AIR) solenoid valve N112 off combination valve - arrow - .

NOTE: Do not use compressed air during following check.







- Connect hand vacuum pump V.A.G 1390 to vacuum hose from combi-valve - arrow - .







- Pull off pressure hose to combination valve at coupling - arrow -, push auxiliary hose onto end of pipe and pressurize slightly by blowing into hose. Combi-valve must be closed.
- Operate hand vacuum pump. Combi-valve must open.

If combi-valve does not open:
Replace combi-valve.