More checks, more questions.
Looking at the wiring diagram, it appears PCM relay activation should trigger fuel pump relay. Right now, PCM relay triggers, fuel pump relay doesn't and that had me wondering.
Continuity checks show high resistance (3-4 Kohms) between PCM relay high side output(pin 5) and fuel relay low side input (pin#2).
Diagram shows should be solid connection.
Any tips on how to open up the battery junction box?
Also, someone stated ref voltage on TPS was <0.050 v??? Books say 5.0v, I got 3.
