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International Automotive Technicians Network
Re: ECM
Posted to Technical Discussion Forum on 10/9/2024

The throttle blade, with no activation will, open to about a 1500 rpm idle speed. The ECM closes the throttle to set normal idle. So, if idle is normal, the ECM is in control. The voltage is PWM so the duty cycle will below. A meter might not see it. The volta... Login to read more.