Does the vehicle run? I ask because looking through schematics is difficult without a starting point or a specific problem. I noticed the injectors have a dark green wire with an orange tracer. This would prevent the engine from running, so let me know if that is the case. I also found a green/orange wire to the heated O2 sensor.
I went through six pages of powertrain management schematics and found no orange/green or solid blue wires, so it has to be from a different circuit. For example, lighting, computer-controlled circuits, or something different.
As far as a heavy gauge blue, that has to be running something with a large draw. If you try to follow the wires, can you tell where they go? I realize one end you don't know, but the opposite should lead somewhere or in a specific direction. Also, is it possible for you to take a couple of pictures of the wires and upload them for me to see? Is there anything not working that may help?
Let me know.
Friday, May 13th, 2022 AT 10:57 PM