A3 L4-2.0L Turbo (CBFA) (2008)
Variable Valve Timing Actuator: Testing and Inspection
Camshaft Adjustment Valve, Checking
Observe all safety precautions.
View clean working conditions.
Use only gold-plated terminals when servicing any component with gold-plated electrical harness connector terminals.
For wiring diagrams, component locations, and connector views, Refer to the applicable wiring diagram.
Special tools, testers and auxiliary items required
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Multimeter
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Wiring diagram
Test requirements
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The Camshaft Adjustment Valve 1 N205 fuse OK.
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Motronic Engine Control Module (ECM) Power Supply Relay J271 OK.
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Battery voltage at least 12.5 volts.
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All electrical consumers such as, lights and rear window defroster, switched off.
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Vehicles with automatic transmission, shift selector lever into position "P" or "N".
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A/C switched off.
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Ground (GND) connections between engine/transmission/chassis OK.
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Ignition switched off.
Test procedure
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Perform a preliminary check to verify the customers complaint. See: Powertrain Management/Computers and Control Systems/Testing and
Inspection/Scan Tool Testing and Procedures/Preliminary Check
Start diagnosis
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Remove the engine cover with air filter.
