Audi AMB Service Manual page 298

ENGINE 1.8 Liter 4-Cyl. 5V Turbo Engine Mechanical, Engine Code(s): AMB
Requirement
Vehicle Diagnostic, Testing and Information System VAS5051 or Scan Tool VAG1551 must be

connected.
Work sequence
NOTE:
The Secondary Air Injection (AIR) solenoid valve N112 and its wiring are

monitored by the engine control module.
Read DTC memory of engine control module.

If display shows a DTC relating to secondary Air Injection (AIR) solenoid valve N112 :
Fig. 388: Identifying Secondary Air Injection (AIR) Solenoid Valve -N112-
Courtesy of VOLKSWAGEN UNITED STATES, INC.
Disconnect hoses from secondary Air Injection (AIR) solenoid valve N112 - 2 - , but leave electrical

connector connected.
Installation location: under intake manifold

NOTE:
Illustration shows removed intake manifold viewed from below.

2005 Audi A4 Quattro
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