Audi AMB Service Manual page 166

ENGINE 1.8 Liter 4-Cyl. 5V Turbo Engine Mechanical, Engine Code(s): AMB
Fig. 227: Identifying Special Tools - Camshaft Adjustment Valve, Checking
Courtesy of VOLKSWAGEN UNITED STATES, INC.
Special tools, testers and auxiliary items required
Multimeter VAG1526A

Voltage tester VAG1527B

Connector test kit VAG1594A

Adapter VAG1598/31

Requirement
Vehicle diagnostic, testing and information system VAS5051 or scan tool VAG1551 must be connected.

Work sequence
Start output Diagnostic Test Mode and activate camshaft adjustment valve.

Indicated on display
Output Diagnostic Test Mode -->
Camshaft timing control
This valve is actuated (clicks) for approx. 1 minute if --> key is not pressed beforehand to select next

control element.
If valve is not actuated (does not click):
Check internal resistance of valve.

Checking internal resistance
Switch off ignition.

Fig. 228: Disconnecting Connector At Camshaft Adjuster
2005 Audi A4 Quattro
1:01:07 AM Page 154