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Let me know if you need the wire diagrams for this circuit. A no communication concern indicates the module is bad, or has wiring issues on the power or ground or communication wires. Have you tested those with a volt ohm meter?
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The CKP is used for the ignition spark. The CMP is used for injector pulse. The CMP does not effect the fuel pump relay, the PCM and VLCM does that. Can you verify the PCM is grounding the VLCM with the key on. Below is a diagram if needed.
That I did, that was for the previous customer I was helping and for some reason it sent it to both of you.
Lets not chase wiring all over the vehicle. Slide a paper clip in beside the power and ground pins at the PAM so you can connect your tool there and see if you get battery voltage and no resistance to ground. Then we can follow the wiring if either of these fail. Can you do that?
I am talking about power and ground at the connector on the PAM. The paper clip is straight slide in beside the power pin for the first test then beside the ground pin for the next test.
Pin 1 LB/BK is supposed to be battery voltage
Pin 3 BK is supposed to have no resistance to another ground pint.
The first wire coming out of the harness at the PAM, when following it from the PAM connector, is going to be the ground for the PAM.
Pin 3 was the only one out of specs form your readings.
Remove that ground connection, and sand it and retest. It needs to have 0.0 ohms of resistance on this ground wire to another ground location.
You unbolt it from the body where the ground for the PAM comes from.
The first wire coming out of the harness at the PAM, when following it from the PAM connector, is going to be the ground for the PAM. Below is an image.
I posted an image pointing to where the ground wire is bolted to the body.
Circuit 140 BK/PK goes to the TR sensor and its the power that tells the PAM when your in reverse.
I am just not seeing any progression occurring between you and I and this vehicle. We are pretty much stuck without a scan tool. I think its best I opt out and let someone else give this a shot. Best of luck and Thanks for letting me try.