Fermin4

3VZ-E engine OBD-1 I w.ant to disable fuel pump only to Scope with 2205A Picoscope Oscilloscope the signals at the ECU

SO I need to keep ignition; fuel injectors and all the other signals at the ECU

I have taken injectors out and order new ones . Since I am waiting, this is an opportunity to test signals at the ECU; at the primary and secondary volts for ignitor, primary coil and some current/voltage to injectors.
I cannot find a way on the General ELectrical diagram. If ai tke 15 Amp fuse I loose all to ignition and also to injectors.
Schematic attached
Thanks

2ToyGuy

I looks like you can either pull the plug off of the fuel pump it's self, or pull the COR plug off of the COR.
The fuel pump's plug is, IIRC, under the access hatch, right above the fuel tank, under the rear passenger seat. Round hatch, bolted down with a number of bolts, about 5" in diameter. Easy to get to, east to open, plug's right there under it. A real good idea if you choose this option to hit both sides of the plug with Electrical Contact Cleaner spray, and then dielectric grease before re-connecting it. Keeps out water, dirt, and thus, corrosion, which can cause all kinds of interesting problems later on.
I feel this is your best option, but that's just my opinion.

The COR is under the right side kick panel, right above the ECU, which you should know where is, since you're reading signals to/from it.

Does that help at all?
Pat☺