SEAT Workshop Service and Repair Manuals > Leon Mk2 > Power unit | 4-Cyl. Injection Engine (1.8l Engine) | Exhaust system | Secondary air system

Overview of secondary air system

1 -	Overrun shut-off valve

q	Checking → Chapter

2 -	Brake servo

3 -	Air cleaner with air mass meter -G70-

4 -	Combi-valve

q	Checking → Chapter

5 -	Fuel pressure regulator

6 -	Non-return valve

7 -	Turbocharger divert valve -N249-

8 -	Secondary air inlet valve -N112-

9 -	Secondary air pump motor -V101-

10 -	Intake pipe

11 -	Vacuum reservoir

Secondary air pump relay -J299--arrow- in relay position 7

t	If tools are necessary to pull relays or control units out of the relay plate, first disconnect battery earth strap.

t	Before disconnecting battery earth strap obtain code for radios with anti-theft coding.

SEAT Workshop Service and Repair Manuals