audi Workshop Repair Guides

Audi Workshop Service and Repair Manuals

Camshaft Adjustment Valve 1 and Camshaft Adjustment Valve 1 (Exhaust), Checking|Page 2101 > < Camshaft Adjustment Valve 1 and Camshaft Adjustment Valve 1 (Exhaust), Checking|Page 2099
Page 1
background image

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) (N208)

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.

Procedure

-

Remove the engine cover with air filter Refer to Fuel Injection and Ignition Repair Information.

-

Disconnect Camshaft Adjustment Valve 1 (N205) electrical harness connector - 1 - or Camshaft Adjustment Valve 1 (exhaust) (N208).

Camshaft Adjustment Valve 1 and Camshaft Adjustment Valve 1 (Exhaust), Checking|Page 2101 > < Camshaft Adjustment Valve 1 and Camshaft Adjustment Valve 1 (Exhaust), Checking|Page 2099