How is the camshaft actuator controlled?
A) Vacuum controlled valve
B) On only when conditions are right
C) Pulse width modulated (PWM) signal
D) Spring loaded to the correct position based on engine speed

Question

Quizplus · Accepted Answer

The camshaft actuator is usually controlled by a pulse width modulated (PWM) signal from the engine control module (ECM). The frequency and duty cycle of the signal determine the position of the actuator, which in turn controls the position of the camshaft.

How Is the Camshaft Actuator Controlled