Jdpate2000

When I’m trying to say is when I turn the key on injector one and injector five start pulsing{being energized by the ECM} if I spin the engine over, trying to start the engine and let the key go and it’s still in the ignition on position injector two and six are now pulsing and not injector one and five once I cycled the key, the ECM is pulsing injector, one and five again I can unplug the three plugs, going to the fuel injectors at the valve cover, and I still have 4 codes ,,,,I think I should be having six Codes instead of four with the key on I have 3.5 V coming to injector one and 2.9 V going to injectors number five. and no voltages going injector 2,3,4 or 6 until I spin the engine over then my voltage is go to injector number two and injector number six earlier today I use the test light and went across each injector and each injector is lighting up the test light ,,,,the test light was brighter on some injectors than others ,,,,with the key switch in the on position it …barely lights up to test light not sure why the ECM is sending low voltage to thefuel injectors

I have a 2005 5.9 manual transmission. I have P0201, P0203, P0205, P0206. when I turn on the key injector one and injector number five start pulsing …if I try to start, the engine, turns over and the pulsing goes to injector two and six until I turn the key switch off once I turn the key switch off it goes back to injector one and five I am following your procedures on testing the valve cover, harness, and ohm out all injectors I can unplug the harness where it plugged into the valve cover, and I still get codes for injector p0201,p0203;p0205 ,p0206 I have checked all grounds and voltages And all are good even check 5volt supply they are all there Except ecm C2, pin 33 it’s supposed to be a 5 volt supply and in the service manual K854 is for the throttle pedal I don’t think that would be related to my problem all other 5 volt and 12 volts supply are present and all grounds according to the service manual are present at the ECU I have replace ECM 3975241 with a reman ecm and I have the same problem, I cut the loom off the harness and inspected every wire and plug no issues with the harness reinstall the harness and same thing number one, and number five injector pulsing with the key on pull the engine harness off of a friends truck same here same model, same manual, trans installed his harness and same thing injector one and injector five steel pulsing. I am lost, and I need help some kind of guidance. If somebody knows what’s going on and wants to talk please call or text 9364330733