Secondary Air Injection (AIR), component overview: Notes

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2009 Audi S4, 2008 Audi S4, 2007 Audi S4, 2006 Audi S4, and 2005 Audi S4. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Secondary Air Injection (Air), Component Overview

Courtesy of VOLKSWAGEN UNITED STATES, INC.

1 - Secondary Air Injection (AIR) Pump Motor V101

Component location Component location of under Component location of Secondary Air Injection (AIR) Pump Motor V101
Removing and installing → Secondary Air Injection (AIR) pump, removing and installing

2 - Secondary Air Injection (AIR) Pump Relay J299

Component location → Component location for Secondary Air Injection (AIR) Pump Relay J299

3 - Motronic engine control module J220

4 - Right combination valve for Secondary Air Injection (AIR)

Component location Secondary Air Injection (AIR) combi-valve
Checking → Combination valve for Secondary Air Injection (AIR), checking function and for proper seal
Removing and installing → Right combination valve for Secondary Air Injection, removing and installing

5 - Secondary air injection (AIR) solenoid valve N112

Component location → Installation location of Secondary Air Injection (AIR) Solenoid Valve N112

6 - Non-return valve

Installed location: - Arrow - points in direction of flow, as shown in Fig 1.

7 - To Intake manifold

8 - Left combination valve for Secondary Air Injection (AIR)

Component location Secondary Air Injection (AIR) combi-valve
Checking → Combination valve for Secondary Air Injection (AIR), checking function and for proper seal
Removing and installing → Left combination valve for Secondary Air Injection, removing and installing

9 - Vacuum reservoir

Component location: In left front wheel housing behind wheel housing liner