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Everything in both fuseboxes are confirmed good now. I replaced basically everything due to seeing some corrosion on some fuses. I went ahead and replaced the main relay anyways. I used my power probe to supply 12v to the white/red wire [ I believe it's 1B]; when I do this, I hear the fuel pump prime and the computer immediately sees the ecu. What else could be bad causing there to be no power in this wire..?
I see that. I mean, of the 4 terminals, one is ground, one is 12v, one is switched, and I would assume when the relay turns on 12v goes out through the last one. The relay just isnt switching. I took the cover off to manually switch it and that solves the issue but..
It seems like I should have power through the relay. Anyone have ideas? I've looked at the wiring diagrams and tested and I have 12v, ground, and switched 12v at the relay.
That diagram on trubokitty is misleading. if you look in the chassis schematics, you will see that 3O V/R goes directly to the IAC valve and does not split off to anywhere else. 3O should be the 12v supplied by the MS out to the IAC and not a 12v input.
The relay is brand new. I definitely have ground, 12v, and switched 12v at the relay. I just can't figure out why it isn't switching. .
Top left is always ground. Bottom left is 12v. Bottom right is switched 12v with ignition. The top right never gets anything. My assumption would be when its switched, it sends 12v out to there. Am I wrong?
Figured it out finally. After posting that it occured to me that the top right terminal should probably have something so i tested the black wire at the back of the fusebox and had no ground so i plugged the relay back in and grounded the wire and that fixed the problem. So top right is ground and top left gets signal to 1B I suppose. 👍
08-16-2017, 12:55 AM
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