Variable valve timing system (Opel Astra J)

Scheme 9. Variable valve timing system: 1 - Engine control unit; 2 - intake camshaft position sensor; 3 - exhaust camshaft position sensor; 4 - crankshaft position sensor; 5 - electromagnetic valve of the intake camshaft; 6 - electromagnetic valve of the exhaust camshaft; 7 - knock sensor