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Home >> Volkswagen >> 2012 >> Passat TDI SE, Standard Trans >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 28 (3.6L - Ignition System - Engine Code: CDVB) >> 28 Ignition/Glow Plug System >> Description And Operation >> Camshaft Adjustment Valves
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Camshaft Adjustment Valves

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Electric solenoid valves are used on each adjustable camshaft to control the flow of engine oil to the adjuster, and are operated by a Pulse Width Modulated (PWM) signal from the Engine Control Module (ECM). Each camshaft also has its own camshaft position sensor to verify camshaft position.