Touareg V8-4.2L (BAR) (2007)
/Page-1080001.png)
Variable Valve Timing Actuator: Testing and Inspection
Camshaft Adjustment Valve 1, Checking
Camshaft Adjustment Valve 1, 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. Refer to --> [ Preliminary Check ] See: Powertrain Management/Computers and
Control Systems/Testing and Inspection/Scan Tool Testing and Procedures/Preliminary Check.
Start diagnosis
Procedure
-
Remove the engine cover with air filter.
-
Disconnect Camshaft Adjustment Valve 1 (N205) electrical harness connector - 1 - or Camshaft Adjustment Valve 1 (exhaust) (N318).
