Secondary Air Injection Combination Valves With Vacuum Control, Checking For Function and Leaks

Secondary Air Injection Combination Valves with Vacuum Control, Checking for Function and Leaks

Special tools, testers and auxiliary items required

• Hand Vacuum Pump (VAS 6213)

Procedure






• Vacuum lines and hose connections free of leaks.

• Vacuum lines not plugged.

- Remove the engine cover - arrows -.

Left Secondary Air Injection (AIR) Combi-Valve:

- Remove the plenum chamber bulkhead.

Right Secondary Air Injection (AIR) Combi-Valve:






- Free up the fuel line and the line to the EVAP canister on the air guide pipe.

- Disconnect the connector - 1 - from the Mass Airflow (MAF) sensor (G70).

- Disconnect the vacuum line - 3 - from the air guide pipe.


Risk of violating emissions legislation.

• Do not open hose connection - 2 -!

- Lay aside air guide pipe with connected crankcase ventilation hose - 2 - by loosening hose clamp - 4 - and opening clips - arrows -.

Continued for Both Sides:






- Remove the vacuum hose - 3 - on the combination valve to be checked.

- Disconnect the secondary air hose - 3 - by pressing the release buttons.

- Connect the (VAS 6213) to the vacuum connection - 1 - for the combination valve to be checked.






- Connect the hose - 2 - to the secondary air injection combination valve.

- Blow lightly into the assisting hose by mouth, do not use compressed air.

• Secondary Air Injection (AIR) combination valve must be closed, it must not be possible to flush.

- Blow forcefully into the assisting hose by mouth, do not use compressed air.

• The AIR combination valve must open, it must be possible to flush.

- If the right AIR combination valve does not react as described, replace it.

- Refer to => [ Left Secondary Air Injection (AIR) Combination Valve ] Left Secondary Air Injection (AIR) Combination Valve or => [ Right Secondary Air Injection (AIR) Combination Valve ] Right Secondary Air Injection (AIR) Combination Valve.

Assembling

Assemble in reverse order of disassembling. Note the following:

- Install the plenum chamber bulkhead.