Combination valve, checking: Notes

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Recommended special tools and equipment

V.A.G 1390 Hand Vacuum Pump

Test requirements

No leaks in vacuum lines or hose connections.
Vacuum hoses not clogged or kinked
Pressure hose for Secondary Air Injection (AIR) Pump Motor not clogged or kinked
Ignition switched off.

Test sequence:

Vehicles with engine code AFP. Refer to Test sequence (vehicles with engine code AFP) ,
Vehicles with engine codes BDF and BJS. Refer to Test sequence (vehicles with engine codes BDF and BJS) .