IAC No Power

[garebel]

2000 Lincoln LS V8. No power to IAC. Found 2 diagrams of IAC but they show different wire colors and wanting to know the wire functions. Do I need to trace it to the PCM and are any fuses involved? From what I've read there is not a relay for this.

Appreciate any input.

 

[joegr]

If I am looking at the correct valve, Green/yellow should be hot (+12V) when the key is in the run position, and Brown should be PWM'd to ground by the PCM as needed to get the correct idle speed when the engine is running. Green/Yellow is fed by fuse 5 (20A) under the hood. The hydraulic fan speed actuator is also on this circuit, as is the MAF, and half of the fuel injectors.

 

[craigh]

I have a wiring diagram book and I will took a look. Joegr is correct. The fuse is F105 in the Auxiliary Junction Box under the hood.