I’m having trouble starting my 1995 Toyota pickup 22RE first thing in the morning when cold, and while after sitting awhile. I’ve tested the cold start injector and it sprays fuel when given 12V and ground via test leads from battery. The fuel pump is pumping fuel to the rail, very well and pressure is ~33 psi at idle when it does run (with fuel pressure up vsv in play), without FPU vsv fuel pressure is in spec as well. The Thermo time switch (all 3 that I have laying around over the years) test good. The cold start injector itself tests (Ohms) out good as well. What I need to verify and check, is that the thermo switch AND wiring is actually carrying the signal to the cold start injector. From what I understand, the time switch completes the circuit via ground while cranking allowing the cold start injector to fire... but I could be misinformed. In any case, I need someone who’s good at electrical on this system to walk me through how to actually test the pigtails and wiring from time switch to cold start injector or vise versa, as I know the injector and time switch function independently, but that doesn’t help a guy start his ride... unless the two work in conjunction. Here is the diagram from the 1995 FSM.

Thanks