Touareg V6-3.2L (BMX) (2005)
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
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Disconnect 2-pin harness connector to the respective valve for camshaft adjustment: