Combination Valve For Secondary Air Injection (AIR), Checking Function and For Proper Seal

Combination Valve For Secondary Air Injection (AIR), Checking Function And For Proper Seal

Special tools, testers and auxiliary items required







- Hand vacuum pump VAS 6213

Test conditions
- Vacuum lines and hose connections free of leaks.
- Vacuum lines not plugged.

Test sequence







- Remove rear engine cover - arrows - .







- Remove cover - 1 - in engine compartment (right side).







- Disengage Evaporative Emission (EVAP) Canister Purge Regulator Valve N80 - 1 - from air guide.
- Remove bolts - arrows - .
- Remove air duct - 2 - .







- Remove air guide hose - arrows - .







- Disconnect vacuum hose - arrow - at combination valve to be tested.

NOTE: Left combination valve is shown in illustration.

- Connect hand vacuum pump VAS 6213 to vacuum hose of combination valve to be checked.







- Disconnect hose - arrow - for Secondary Air Injection (AIR) pump at air filter housing, press release buttons to do so.
- Blow with light pressure into pipe (do not use pressurized air).
- Both combination valves must be closed, it must not be possible to blow through hose.
- Operate hand vacuum pump.
- The relevant combination valve must open, it must not be possible to blow through

If relevant combination valve does not open:
- Replace combination valve: Left, right.