The system simply needs to see a valid key to reset.
It sounds to me like you are having a communication issue, rather than an immobilizer issue. If the PCM and SKIM (sentry key immobilizer module) can't communicate with each other, for whatever reason, the car won't start.
Some questions to see if we can get to the bottom of things;
When the car has been off for a few minutes, and you turn the key to the run position, does the fuel pump come on for 3 seconds or so?
Will your scanner communicate with any of the cars modules?
What type of repair work was done?
Looking forward to hearing from you,
First the fact that the scanner won't communicate with the engine controller, and the fuel pump doesn't come on for 3 seconds when the key is cycled to the on position, leads me to the conclusion that the PCM is not functional.
Even if it was an issue with the immobilizer (SKIM) system, your scan tool should be able to communicate with the PCM, and you should be getting a fault code something along the lines of 'invalid ignition key'.
There is no 'reset' procedure for the system. The procedure he gave you is completely unrelated to a no-start condition. It's used if you are programming a key with the scan tool, and you use the wrong PIN number. Even in this case the car will start with a programmed key.
Now, the remote start you used, does it have the bypass module that interfaces with the cars computer network? They generally wire into one of the pins at the DLC to give you door lock / unlock, things of that nature? If so is the wire still connected to the databus network of the car?
Second, just to clarify, have you tried to access any of the systems on the car (trans, abs, etc?).
A good first step would be to determine if the engine controller is working, of if something is effecting the data bus network of the car. If the PCM and the SKIM can't communicate with each other, it won't start.
The immobilizer system can not lock you out of the other modules, your scanner should be able to communicate with the PCM regardless.
I'll admit to being completely unfamiliar with the Snap-On scanner. I work at a dealer, and we have the factory scan tools.
It happened when you stepped on the brake, all that really does is turn the remote start off, but as far as the car itself is concerend nothing changes (as the circuits are still powered up by the ignition key) so the car doesn't even look at the key. (it's only checked at startup).
If it somehow managed to blow the ignition fuse under the hood the car won't start, but you've checked all the fuses and I'm assuming they are good.
The only other issue I can think of is if it somehow was connected to the PCM wire on the
At this stage, here is how I would go about trying to get to the bottom of this issue...
1) I'd find a similar car and see if the scanner is capable of talking to it.
2) Unplug the PCM.. see if you can access any other modules (abs or airbag). If you can the PCM has issues that are preventing the car from starting and effecting the data bus.
I think you have PCM issues, you should hear that fuel pump coming on for a 3 second prime when the key is turned to run regardless of data bus or security status..
If you unplug the pcm and still can't talk to anything, we'll have to get into vehicle communication, a tough job online like this, but I'll give it a shot.
Give 1+2 a try, and let me know the results and we'll take it from there. I have to post this as an answer, but please don't accept until we come up with a resolution!
Let me know how it goes. I work full time at a dealer, do this on the side. I should be online in the morning for a few hours so I'll try to get back to you as quickly as possible.
No hidden fusible links in the harness, but double check all those fuses. If you find a bunch of stuff missing power make a list and I'll see what they share in common.