Checking secondary air inlet valve: Audi Q7 (CEUC, CEUD, CGWB, CGWD, …)
Step-by-step checking secondary air inlet valve for the Audi Q7: 14 steps. What to remove, in what order, and what to check after.
Workshop procedure for AUDI — the exact step sequence and torque figures, straight from real workshop data.
🧭 Before you start
Fits: Audi Q7 (4M, 2015–)
- Renewed: o-ring
Don't miss
- Disregard (item 5).
- Extend secondary air hose with a test hose and blow lightly into secondary air hose with your mouth (do not use compressed air).
- Renew O-ring after removal.
🔧 Engine codes this applies to
📐 3 workshop diagrams for CEUC
Real factory drawings for this job — timing marks, bolt locations and routing. Locked in the free view.
📋 Procedure
- Remove air cleaner housing .
- Remove throttle valve module J338.
- Press release tabs on both sides and detach vacuum connection (arrow).
- Unplug electrical connectors (1 ... 4) and move electrical wiring clear. [Note: Disregard (item 5).]
- Release fasteners (arrow) and press wiring duct (1) slightly towards rear.
- Detach vacuum hose (1) or (2) from combination valve to be checked.
- Connect hand vacuum pumpVAS 6213 to vacuum hose of combination valve to be checked.
- Press release tabs and detach secondary air hose (arrow) from secondary air pump motor V101.
- Extend secondary air hose with a test hose and blow lightly into secondary air hose with your mouth (do not use compressed air).
- Operate hand vacuum pump.
- Renew combination valve for secondary air system if it does not open . [Note: Renew O-ring after removal.]
- Electrical connections and routing .
- Install throttle valve module J338.
- Install air cleaner housing .
Ask TorqFix about your Audi CEUC — it answers with the exact sequence for that engine and the workshop drawing for each step. First question is free after a 20-second sign-up, no card.
Ask about your Audi CEUC — free → or sign up free to see the drawingsOther AUDI procedures
- Removing high-pressure pipe, cylinder bank 1 (right-side)
- Checking fuel system pressurisation pump G6
- Filling and bleeding fuel system
- Removing and installing engine oil cooler (right-side) – Audi
- Removing and installing auxiliary radiator (right-side), Audi RS 6/RS 7
- Removing and installing toothed belt – Audi · 56 torque figures
- Removing engine – Audi A8 D3 · 41 torque figures
- Removing camshaft timing chain from camshafts – Audi A6/A7 C7 · 38 torque figures
- Installing engine – Audi A8 D4 · 36 torque figures
- Removing and installing camshaft timing chain · 29 torque figures
Who makes these pages, and how
TorqFix was built by a mechanic — after a 2,700 km drive with five roadside repairs that no diagnostic tool could explain.
The figures on this page come from manufacturer workshop documentation and are shown as they are. The page is assembled automatically from that data — it is not written by an AI. The AI works in the chat, where it answers for your specific car. It writes nothing here.
Variants of the same model differ. Cross-check torque against the factory manual for your engine before final tightening.
Seen a figure that does not match your manual? Write to us — we correct it and note when. support@torqfix.com
The story behind TorqFix →Workshop data on this page last updated 20 Sep 2026.