audi Workshop Repair Guides

Audi Workshop Service and Repair Manuals

Not Available For Manufacturer's Scan Tool|Page 6449 > < Not Available For Manufacturer's Scan Tool
Page 1
background image

Air Injection Control Valve: Testing and Inspection
With Generic Scan Tool

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

Recommended special tools and equipment

-

VAG1390 Hand Vacuum Pump

Test requirements:

-

No leaks in vacuum lines or hose connections.

-

Vacuum lines not clogged.

Test sequence

-

Remove rear engine cover (arrows).

-

Remove bolts for holding plate for solenoid valves (arrows).

-

Lift up holding plate and disconnect vacuum hose from Y-piece of combination valve to be checked.

-

Connect e.g. V.A.G 1390 hand vacuum pump to vacuum hose of combination valve to be checked.

Not Available For Manufacturer's Scan Tool|Page 6449 > < Not Available For Manufacturer's Scan Tool