Engine Position Signal from ECM to VP44
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From: Toronto, Canada
Engine Position Signal from ECM to VP44
This is the signal that is sent from pin 7 of ECM to pin 8 of VP44.
I scoped the signal today and got a 12v square wave. I was expecting a 5v square wave since both crank sensor signal and cam sensor signal are 5v square waves. It appears that the ECM processes the signals and generates a 12v square wave, I assume because that is what the VP44 is designed for.
Can someone confirm that this signal to the VP is indeed supposed to be 12v and not 5v?
I scoped the signal today and got a 12v square wave. I was expecting a 5v square wave since both crank sensor signal and cam sensor signal are 5v square waves. It appears that the ECM processes the signals and generates a 12v square wave, I assume because that is what the VP44 is designed for.
Can someone confirm that this signal to the VP is indeed supposed to be 12v and not 5v?
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Joined: Nov 2002
Posts: 4,053
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From: lyman, utah
This is the signal that is sent from pin 7 of ECM to pin 8 of VP44.
I scoped the signal today and got a 12v square wave. I was expecting a 5v square wave since both crank sensor signal and cam sensor signal are 5v square waves. It appears that the ECM processes the signals and generates a 12v square wave, I assume because that is what the VP44 is designed for.
Can someone confirm that this signal to the VP is indeed supposed to be 12v and not 5v?
I scoped the signal today and got a 12v square wave. I was expecting a 5v square wave since both crank sensor signal and cam sensor signal are 5v square waves. It appears that the ECM processes the signals and generates a 12v square wave, I assume because that is what the VP44 is designed for.
Can someone confirm that this signal to the VP is indeed supposed to be 12v and not 5v?
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