Volkswagen Workshop Service and Repair Manuals > Touareg V6-3.2L (BMX) (2005) > Engine, Cooling and Exhaust | Engine | Timing Components | Variable Valve Timing | Variable Valve Timing Actuator | Component Information | Diagrams

Diagram Information and Instructions|Page 4423 > < Diagram Information and Instructions|Page 4421

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Variable Valve Timing Actuator: Testing and Inspection

Diagnostic Procedures

Camshaft Adjusting Valves, Checking

Function

The camshaft adjustment is load- and RPM dependant. The electrical valves for camshaft adjustment switch oil pressure onto camshaft adjusters
(mechanical adjustment mechanisms), which then adjust the camshafts.

Special tools, testers and auxiliary items required

‹› Multimeter (VAG1526) or Multimeter (VAG1715)

‹› Connector test kit (VAG1594)

‹› Wiring diagram

Test requirements

‹› Respective fuses of camshaft adjustment valves in E-box (in plenum chamber, left side) must be OK:

‹› Motronic Engine Control Module (ECM) Power Supply Relay (J271) must be OK, check:

‹› Ignition switched off.

Test sequence

Disconnect 2-pin harness connector to the respective valve for camshaft adjustment:

Engine, Cooling and Exhaust
Engine
Timing Components
Variable Valve Timing / Variable Valve Timing Actuator / Diagrams
Page 4422

Diagram Information and Instructions|Page 4423 > < Diagram Information and Instructions|Page 4421

Volkswagen Workshop Service and Repair Manuals

Touareg V6-3.2L (BMX) (2005)

Engine, Cooling and Exhaust Engine Timing Components Variable Valve Timing / Variable Valve Timing Actuator / Diagrams Page 4422

Engine, Cooling and Exhaust Engine Timing Components Variable Valve Timing / Variable Valve Timing Actuator / Diagrams Page 4422

Engine, Cooling and Exhaust
Engine
Timing Components
Variable Valve Timing / Variable Valve Timing Actuator / Diagrams
Page 4422

Engine, Cooling and Exhaust
Engine
Timing Components
Variable Valve Timing / Variable Valve Timing Actuator / Diagrams
Page 4422