Electrical test of solenoid valve for camshaft adjustment

WARNING: This page is about a different car, the 2006 Audi A4, 2005 Audi A4, 2004 Audi A4, 2003 Audi A4, and 2002 Audi A4. However, it is still accessible from the selected car via links, so may be relevant.

Cylinder bank 2 (left):

Fig 1: Removing Cover In Engine Compartment (Left Side)

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Courtesy of VOLKSWAGEN UNITED STATES, INC.

Remove cover -1- in engine compartment (left side).

Fig 2: Removing Coolant Hoses

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Courtesy of VOLKSWAGEN UNITED STATES, INC.

Remove coolant reservoir (arrow)
Remove line from Engine Coolant Level (ECL) warning switch -F66- and lay coolant reservoir to side.

NOTE: Coolant hoses 1 to 3 remain connected.

Cylinder bank 1 (right)

Fig 3: Removing Cover In Engine Compartment (Right Side)

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Courtesy of VOLKSWAGEN UNITED STATES, INC.

Remove cover -1- in engine compartment (right side).

Fig 4: Evaporative Emission Canister Purge Regulator Valve N80 And Air Duct

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Courtesy of VOLKSWAGEN UNITED STATES, INC.

Remove bolts (arrows).
Detach Evaporative Emission (EVAP) canister purge regulator valve -N80- -1- at air guide.
Remove air guide -2-.

Fig 5: Removing Air Filter Housing

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Courtesy of VOLKSWAGEN UNITED STATES, INC.

Remove air filter housing (arrows).

Continuation for both cylinder banks

Fig 6: Disconnecting Harness Connector From Connector Adapter

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Courtesy of VOLKSWAGEN UNITED STATES, INC.

Disconnect harness connector (arrow) from connector adapter.

NOTE: Illustration depicts cylinder bank 2 (left).