A8 Quattro Sedan V8-4.2L (BGK) (2006)
Variable Valve Timing Actuator: Testing and Inspection
Camshaft Adjustment Valves, Checking
Solenoid Valve for Camshaft Adjustment, Electrical Testing
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Disconnect connector at respective solenoid valve for camshaft adjustment.
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Perform a resistance measurement between terminals on solenoid valve using portable multimeter (VAG1526).
Specified value: 10 to 18 ohms.
If specified value is not obtained.
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Replace respective Camshaft Adjustment Valve 1 (N205) / Camshaft Adjustment Valve 2 (N208).
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Read readiness code => [ Readiness Code, Reading ] See: Powertrain Management/Computers and Control Systems/Testing and
Inspection/Monitors, Trips, Drive Cycles and Readiness Codes. If DTC memory was erased, readiness code must be generated again => [
Readiness Code, Generating ] See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Monitors, Trips, Drive
Cycles and Readiness Codes.
If specified value is obtained, check voltage supply.
Voltage Supply of Solenoid Valves for Camshaft Adjustment, Checking
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Disconnect connector at respective solenoid valve.
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Connect voltage test lamp (VAG1527) to terminal 1 (B+) of connector and to engine Ground (GND) using cables from connector test kit
(VAG1594).