Checking secondary air inlet valve - system with vacuum control — AUDI

🧭 Before you start

Fits: Audi A5 (8T, 2007–2016)

Don't miss

• Risk of violating emission legislation applying to USA models.Do NOT open hose connection (2). — Release hose clip (4) and clamps (arrows) and move air pipe clear to one side (crankcase breather hose (2) remains connected).
• Blow lightly into test hose with your mouth (do not use compressed air).
• Blow more firmly (i.e. with greater pressure) into test hose with your mouth (do not use compressed air).

🔧 Engine codes this applies to

📋 Procedure

1. Remove engine cover panel (arrows).
2. Remove plenum chamber partition panel General body repairs, exterior50Bulkhead; Exploded view - plenum chamber partition panel.
3. Move clear fuel line and line going to activated charcoal filter at air pipe.
4. Unplug electrical connector (1) from air mass meter G70.
5. Disconnect vacuum line (3) from air pipe.

6. Disconnect crankcase breather hose (2) from air pipe by pressing release tabs.
7. Remove air pipe and air mass meter G70. To do so, release hose clip (4) and clamps (arrows).
8. ⚠ Risk of violating emission legislation applying to USA models.Do NOT open hose connection (2). — Release hose clip (4) and clamps (arrows) and move air pipe clear to one side (crankcase breather hose (2) remains connected).
9. Detach vacuum hose (3) from combination valve to be checked.
10. Press release tabs and disconnect secondary air hose (3).
11. Connect hand vacuum pumpVAS 6213 to vacuum connection (1) of combination valve to be checked.
12. Connect test hose (2) to combination valve for secondary air system.
13. Blow lightly into test hose with your mouth (do not use compressed air).
14. Blow more firmly (i.e. with greater pressure) into test hose with your mouth (do not use compressed air).
15. Renew combination valve for secondary air system if valve does not react as described:
16. Install plenum chamber partition panel General body repairs, exterior50Bulkhead; Exploded view - plenum chamber partition panel.

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