Function
- In the cold start phase, the ECM - 3 - activates the Secondary Air Injection (AIR) pump - 1 - via the Secondary Air Injection (AIR) pump relay - 2 -. Air reaches the combination valves for Secondary Air Injection (AIR) - 4 - and - 8 -.
- The Secondary Air Injection (AIR) valve - 5 - is activated in parallel, which allows the vacuum to reach the combination valves for Secondary Air Injection (AIR) - 4 - and - 8 -. The appropriate combination valve for Secondary Air Injection (AIR) thereby opens the path for secondary air to the exhaust channels of the cylinder head.
Scheme 863
1 - Secondary Air Injection (AIR) Pump Motor V101
- Component location --> «Installation position of Secondary Air Injection (AIR) Pump Motor V101»(/audi/a8/d3-2005-2007/remont/cooling-fan/#42l-v8-5v-generic-scan-tool-engine-codes-bfm)
- Removing and installing --> «Secondary Air Injection Pump Motor, Removing and Installing»(/audi/a8/d3-2005-2007/remont/cooling-fan/#42l-v8-5v-generic-scan-tool-engine-codes-bfm__secondary-air-injection-pump-motor-removing)
2 - Secondary Air Injection (AIR) Pump Relay J299
- Component location --> «Installation position of Secondary Air Injection (AIR) Pump Relay J299»(/audi/a8/d3-2005-2007/remont/cooling-fan/#42l-v8-5v-generic-scan-tool-engine-codes-bfm)
- Checking --> «Secondary Air Injection Pump Relay, Checking»(/audi/a8/d3-2005-2007/remont/cooling-fan/#42l-v8-5v-generic-scan-tool-engine-codes-bfm__secondary-air-injection-pump-relay-checking)
3 - Engine Control Module (ECM) J623
4 - Combination valve for secondary air injection (right)
- Component location --> «Combination valve for secondary air injection (AIR)»(/audi/a8/d3-2005-2007/remont/cooling-fan/#42l-v8-5v-generic-scan-tool-engine-codes-bfm)
- Checking --> «Secondary Air Injection Combination Valve, Checking»(/audi/a8/d3-2005-2007/remont/cooling-fan/#42l-v8-5v-generic-scan-tool-engine-codes-bfm__secondary-air-injection-combination-valve-checking)
- Removing and installing --> «Right Combination Valve, Removing and Installing»(/audi/a8/d3-2005-2007/remont/cooling-fan/#42l-v8-5v-generic-scan-tool-engine-codes-bfm__right-combination-valve-removing-and-installing)
5 - Secondary Air Injection (AIR) Solenoid Valve N112
- Component location --> «Installation position of Secondary Air Injection (AIR) Solenoid Valve N112»(/audi/a8/d3-2005-2007/remont/cooling-fan/#42l-v8-5v-generic-scan-tool-engine-codes-bfm)
- Checking --> «Secondary Air Injection Solenoid Valve, Checking»(/audi/a8/d3-2005-2007/remont/cooling-fan/#42l-v8-5v-generic-scan-tool-engine-codes-bfm)
6 - Check-valve
- Installation position: - Arrow - points in direction of flow (Scheme 863)
7 - To intake manifold
8 - Combination valve for secondary air injection (left)
- Component location --> «Combination valve for secondary air injection (AIR)»(/audi/a8/d3-2005-2007/remont/cooling-fan/#42l-v8-5v-generic-scan-tool-engine-codes-bfm)
- Checking --> «Secondary Air Injection Combination Valve, Checking»(/audi/a8/d3-2005-2007/remont/cooling-fan/#42l-v8-5v-generic-scan-tool-engine-codes-bfm__secondary-air-injection-combination-valve-checking)
- Removing and installing --> «Left Combination Valve, Removing and Installing»(/audi/a8/d3-2005-2007/remont/cooling-fan/#42l-v8-5v-generic-scan-tool-engine-codes-bfm__left-combination-valve-removing-and-installing)
9 - Vacuum reservoir
- Component location: Under wheel housing liner in front left wheel housing
Scheme 864
- Front, right, on intake manifold (- arrow -).
Scheme 865
- At front right in engine compartment below the longmember
Scheme 866
- At position 1 in E-box, plenum chamber
- Fuse for Secondary Air Injection (AIR) pump - B
Scheme 867
- At rear of cylinder heads
Note. Left valve is displayed in illustration.