Audi AMB Service Manual page 240

ENGINE 1.8 Liter 4-Cyl. 5V Turbo Engine Mechanical, Engine Code(s): AMB
Vehicle Diagnostic, Testing and Information System VAS5051 VAS5051 with VAS5051/1

or
Scan Tool VAG1551 with VAG1551/3A

Requirement
Vehicle Diagnostic, Testing and Information System VAS5051 or Scan Tool VAG1551 must be

connected.
Work sequence
NOTE:
The Wastegate bypass regulator valve N75 and its wiring are monitored by

the engine control module.
Read DTC memory of engine control module.

If display shows a DTC relating to Wastegate bypass regulator valve N75 :
Disconnect hoses from valve; leave connector connected.

Fig. 314: Connecting Test Hose To Valve Connection
Courtesy of VOLKSWAGEN UNITED STATES, INC.
Connect test hose to valve connection marked with - arrow -.

Start Output Diagnostic Test Mode and actuate Wastegate bypass regulator valve N75.

Indicated on display
Output Diagnostic Test Mode -->
Wastegate bypass regulator valve -N75
Valve must click...

2005 Audi A4 Quattro
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