Audi Workshop Service and Repair Manuals

Secondary air system - exploded view   Note t  Fitting location for secondary air pump relay -J299- → Fig. t  Fitting location for secondary air pump fuse → Fig..

Vehicles with engine code letters BDB, BMJ

1 -	Intake manifold

2 -	Vacuum unit for intake manifold change-over

3 -	To intake manifold

4 -	Not fitted

5 -	Combination valve for secondary air system

q	Checking → Chapter

q	Removing and installing → Chapter

6 -

Gasket

q

Renew

7 -	Air channel

q	In cylinder head

8 -

10 Nm

9 -	Connection for combination valve

10 -

5 Nm

11 -	Pressure hose

q	Check for secure connection

12 -

O-ring

q	Renew if damaged

13 -	Connection

14 -

Bracket

q	For secondary air pump motor -V101-

q	With support for sump

15 -

20 Nm

16 -	Electrical connector

17 -	Rubber mounting

18 -	Secondary air pump motor -V101-

q	Removing and installing → Chapter

19 -	Air cleaner

q	Clean if dirty

20 -	Retaining clamp

21 -	Intake hose

q	Check for secure connection

22 -	Non-return valve

q	Installation position (light side/dark side): as shown in illustration; arrow indicates direction of flow

23 -	Electrical connector

24 -	Variable intake manifold change-over valve -N156-

25 -	Secondary air inlet valve -N112-

q	Fitting location → Fig.

26 -	Vacuum reservoir

Vehicles with engine code letters BUB

1 -	Secondary air pump motor -V101-

q	Removing and installing → Chapter

2 -	Rubber mounting

3 -

9 Nm

4 -

Bracket

q	For secondary air pump motor -V101-

5 -

9 Nm

6 -

9 Nm

7 -	Secondary air hose

q	Check for firm attachment

8 -

Gasket

q

Renew

9 -	Connection

q	For coolant and combination valve for secondary air system

10 -

9 Nm

11 -

9 Nm

12 -

Gasket

q

Renew

13 -	Combination valve for secondary air system

q	Checking → Chapter

q	Removing and installing → Chapter

14 -

O-ring

q	Renew if damaged

15 -	Secondary air hose

q	Check for firm attachment

16 -

O-ring

q	Renew if damaged

17 -

O-ring

q	Renew if damaged

18 -	Connecting piece

q	To air cleaner

19 -	Air cleaner

q	Clean if dirty

Vehicles with engine code letters CBRA

1 -	Secondary air pump motor -V101-

q	Removing and installing → Chapter

2 -	Rubber mounting

3 -

9 Nm

4 -

Bracket

q	For secondary air pump motor -V101-

5 -

9 Nm

6 -

9 Nm

7 -

Hose

q	Check for firm attachment

8 -	Vacuum hoses

9 -	Secondary air inlet valve 2 -N320-

q	Fitting location → Fig.

10 -	Vacuum hoses

11 -	Secondary air inlet valve -N112-

q	Fitting location → Fig.

12 -

Gasket

q

Renew

13 -	Connection

q	For coolant and combination valve for secondary air system (left-side)

14 -

9 Nm

15 -

Gasket

q

Renew

16 -	Connection

q	For combination valve for secondary air system (right-side)

17 -

9 Nm

18 -

Hose

q	Check for firm attachment

19 -

9 Nm

20 -	Connection

q	For combination valve for secondary air system (right-side)

21 -

9 Nm

22 -

Gasket

q

Renew

23 -	Combination valve for secondary air (right-side)

q	Checking → Chapter

q	Removing and installing → Chapter

24 -

Gasket

q

Renew

25 -

9 Nm

26 -

Elbow

q	For combination valve for secondary air system (right-side)

27 -

Hose

q	Check for firm attachment

28 -

9 Nm

29 -

Pipe

30 -

Gasket

q

Renew

31 -	Combination valve for secondary air (left-side)

q	Checking → Chapter

q	Removing and installing → Chapter

32 -

Gasket

q

Renew

33 -

9 Nm

34 -

O-ring

q	Renew if damaged

35 -	Sender 1 for secondary air pressure -G609-

q	Removing and installing → Chapter

36 -

3.5 Nm

37 -

O-ring

q

Renew

38 -

Pipe

39 -

9 Nm

40 -

O-ring

q	Renew if damaged

41 -

O-ring

q	Renew if damaged

42 -	Connecting piece

q	To air cleaner

43 -	Air cleaner

q	Clean if dirty

Fitting location of secondary air pump relay -J299- t  In electronics box in engine compartment. 3 -  Secondary air pump relay -J299-

Fitting location of fuse for secondary air pump motor -V101- t  In electronics box in engine compartment. F -  40 A fuse for secondary air pump motor -V101-

Fitting location of secondary air inlet valve(s) t  At vacuum reservoir on front of intake manifold 1 -  Secondary air inlet valve -N112- 2 -  Secondary air inlet valve 2 -N320- - only with engine code CBRA