Secondary Air Injection Combination Valve, Checking for Function and Leaks

Secondary Air Injection Combination Valve, Checking for Function and Leaks

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.





• 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 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. Refer to: Left => [ Secondary Air Injection Left Combination Valve ] Secondary Air Injection Left Combination Valve, right => [ Secondary Air Injection Right Combination Valve ] Secondary Air Injection Right Combination Valve.