fuel supply...electronic

[clesko]

new member posting 1st message

facts:
911 carrera
3.2 factory everything
1986

problem:
over the course of 3 months the car went from starting
flawlessly to intermittently starting to not starting at all.
once started the car idles and runs without a hitch.

what i know so far:
i got out my volt meter and started probing...1st there was
no electricity at the fuel pump fuse in the boot (i jumpered
12 volts from another fuse and the car started...once again
the car ran fine). next on the list was the relay under the
seat...i took it out and tested it using a battery charger and
both contacts closed nicely. in the process i dropped the
relay, like a bozo, and i currently have another relay on
order. but i checked for the proper electricity coming out
of the DME to the relay and found that there was no juice.
therefore i'm not positive the problem is the relay, which
will be replaced anyway.

question:
does the DME go through a diagnostic check of other
components prior to sending the fuel pump relay
electricity? i.e. the oxygen or altitude sensor.

my speculation:
if its not the fuel pump relay then i lean heavily on the DME
as the faulty component.

any help will be appreciated...danke