Sometimes, after replacing a part or completing a repair on a vehicle, you have to do a factory-level Functional Test or some sort of reset to get that vehicle all set and ready to go.
Ford has this thing called a misfire monitor neutral profile correction that you have to do anytime you replace ECMs, crank sensors or anything in that system.
I'm going to show you how we can do that on the Snap-on scan tool.
This takes place in the engine so we'll go inside the Engine [System Menu] and it's a Functional Test, so we'll go to the Functional Tests, and there it is right there: Misfire Monitor Neutral Profile Correction.
It gives us a little history or a description of how it works. It resets or learns the misfire monitor neutral profile correction.
It should be performed following a PCM replacement, internal engine repairs or crank sensor or trigger replacement, so there are quite a few different times when you might need to do this in the shop.
The engine needs to be at normal temperature, gear selector has to be in park or neutral, air conditioning, and defroster need to be off. All these requirements are met.
I've got my buddy Jim in the car over here and we're going to go through these tests. So I'm going to hit continue.
It says to snap the throttle to increase RPM above 3,500. The test complete when Misfire Monitor, Wheel Profile Down Count reaches zero. Rev the vehicle until that happens and then you can turn the engine off.
It was a pretty simple reset - a couple of revs and we're all done.