50 amp fuse keeps blowing on injector driver module. Does anyone know what circuit it is? Wiring appears good, can it be in either computer? Have tried everything we can think of.....which computer is attached to this circuit? Code reader will not function when plugged in. Help....pleaseeeeeee!!!!

 

Welcome to the site..

The 50amp fuse is power distribution/circuit protection for the FICM only, although there is a spliced secondary power distribution off of the closed FICM power relay for the module. It does network with the PCM but sounds like the FICM is shorted. Given the FICM failures, the converter board fail rate is high, the processor board side is a much smaller number. How was it running (more so cold) prior to the fuse popping?