Manuals through 2025 now available!
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LEMON is the spiritual successor to CHARM, I recommend you try it!
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Variable Valve Timing Actuator: Description and Operation
Camshaft Adjustment Valves 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.