A friend of mine has a 2000 GTP with about 175,000 miles on it. They have had it for over a year and it has beed trouble free. The other morning when they went to leave work it would not start. I went and checked it and it would crank but it would not start. I checked the fuel pump fuse and it was good. I swapped the #14 and #15 relays with no change. We towed the car to her dad's place and did some more checking. We found no pressue in the fuel rail. Her dad put in a new fuel pump and it still did not start. He tested it and found that there was no power to the fuel pump. He traced that to the #14 relay not energizing. We were working with a general Haynes manual and it appears that there should be power to the #86 leg of the #14 relay from the PCM and there is not. The guy at the parts house suggested we replace the fuel pressure sender as he said that could shut down PCM. We did that with no change. So then we jumped the pos battery leg directly to the pump connection and the pump would now run and the fuel rail pressured up. We left the jumper in place an tried to start the car and it would just crank. We put a sparkplug in one plug wire and cranked it and had fire. I undid the connector at the PCM and found the wire that runs from PCM to the leg of the relay that should be energised and it had .1 ohm resistance. I can see no damage on the harness. The security light on the dash does not flash when car is off. It will come on a little while when key it turned to run position but then goes out. I am unable to take readings with my scan tool. I tried about 10 times and it always says can not make a connection.
I am at a bit of a loss here. Has the PCM failed, is something in the BCM causing an issue? Any help would be appreciated.
