A3 Quattro V6-3.2L (BUB) (2008)
Variable Valve Timing Actuator: Testing and Inspection
Camshaft Adjustment Valve 1 and Camshaft Adjustment Valve 1, Exhaust, Checking
Camshaft Adjustment Valve 1 And Camshaft Adjustment Valve 1, Exhaust, Checking
The following procedure is used to diagnose both Camshaft Adjustment Valve 1 N205 and Camshaft Adjustment Valve 1 (exhaust) N318
Special tools, testers and auxiliary items required
-
Multimeter.
-
Wiring diagram.
Test requirements
-
The Camshaft Adjustment Valve 1 N205 fuse OK.
-
Motronic Engine Control Module (ECM) Power Supply Relay J271 OK, checking.
-
Battery voltage at least 12.5 volts.
-
All electrical consumers such as, lights and rear window defroster, switched off.
-
Vehicles with automatic transmission, shift selector lever into position "P" or "N".
-
A/C switched off.
-
Ground (GND) connections between engine/transmission/chassis OK.
-
Ignition switched off.
Test procedure
-
Perform a preliminary check to verify the customers complaint. See: Powertrain Management/Computers and Control Systems/Testing and
Inspection/Initial Inspection and Diagnostic Overview/General Diagnosis
Start diagnosis
-
Remove the engine cover with air filter.
-
Disconnect Camshaft Adjustment Valve 1 N205 electrical harness connector - 1 - or Camshaft Adjustment Valve 1 (exhaust) N318.