no ground to injector

[01mustgt]

i have a friend who owns a 2004 mustang gt and he cant get a ground to the injector. when he does his multimeter tests, it shows he has power constantly but has no ground. i let him read some of the replys to my old threads but still cant find anything to work. please help cuz i really wanna see how much faster my mustang is compared to his stock gt.
thanx dane.

 

[trinity_gt]

Ground is provided by the PCM by switching a semiconductor (solid state) switch. Bottom line: A simple ohmmeter test will not suffice here.

 

[wmburns]

Buy or rent yourself a set of "noid" style test lights. This will help confirm if the injectors are actually being "pulsed".

As said before, the injectors and COPS are ground start devices. Which means they have power "at all times". The devices are fired by the PCM completing the "path to ground".