what tells the pcm that it is okey to send the signal to the injectors?

2003 CHEVROLET CAMARO
999,999 MILES
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NEMIR89
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the pcm controls the injectors by which signal recived at the pcm? is it the pip signal?
Oct 13, 2012 at 4:00 PM
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ASEMASTER6371
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crank sensor is the primary sensor.

Roy
Oct 13, 2012 at 4:05 PM
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WRENCHTECH
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Passlock security system also.
Oct 13, 2012 at 4:25 PM
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