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Old 05-28-2018, 08:47 PM   #1
Redvue55
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Default Crankshaft position sensor wire diagram

I have a 2003 Vue 3.0 Awd that i am looking for a pinout of the pcm connectors or a schematic for the crankshaft position sensor, i would like to run new wires to the sensor without disecting the wiring harnesses...
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Old 05-29-2018, 02:13 AM   #2
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Default Re: Crankshaft position sensor wire diagram

What makes you think new wiring between the crank sensor and ecm is needed? One simple question - did you lose both spark and injector operation? The crank sensor provides precise timing signals to allow the ecm to operate the EFI system. No crank sensor signals to the ecm = no fuel pump operation during starting/running, no spark and no injector operation. Verifying zero fuel requires removing plugs to examine them for fuel (injector and fuel pump operation). Verifying lack of spark would be spraying starting fluid into throttle while starting - zero spark while spraying starting fluid would mean the engine won't fire up.

The crank sensor doesn't need power. It generates signals from a Hall effect sensor; a built in magnet and field is altered by machined teeth on the crankshaft, generating pulses for each tooth and gap with a space to determine cylinder #1. The ecm uses these timing signals to operate the EFI system.

If you have fuel going into cylinders, the injectors are operating - this isn't a faulty crank sensor or wiring. If spark is seen, this isn't a faulty crank sensor or wiring.
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Old 05-29-2018, 01:45 PM   #3
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Default Re: Crankshaft position sensor wire diagram

If ecm is not getting the signal, and the crank sensor is confirmed by diagnostics to be working as it's designed intent, there's obviously a disruption somewhere.
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Old 05-30-2018, 12:28 AM   #4
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Default Re: Crankshaft position sensor wire diagram

To check pinouts on the ecm, you'll have to remove the battery, underhood fuse box, and battery box to access the ecm. There are two multiple pin connectors to the ecm.
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