Variable Camshaft (VANOS): Notes
WARNING: This page does not describe the selected car, but rather 10 other vehicles, including the 2010 BMW M6, 2010 BMW M5, 2009 BMW M6, 2009 BMW M5, and 2008 BMW M6. However, it is still accessible from the selected car via links, so may be relevant.
The variable camshaft controls the position of the camshaft in relation to crankshaft. The actuator used for to vary its position is a high-pressure hydraulic motor controlled by one 3/2-way-hydraulic valve.
The testing of the Variable Camshaft consists of:
- An electrical diagnostic of the control valve driver circuit
- A high-pressure test
- A rationality check between target and measured position
- A rationality check of the max. reachable position.