OBD2 Engine Start Simulator

[fixkick]

REDUX, and more direct and zero illegal , hints, Just how to get RPM. Keep in mind 1996 are vary limited. (no VIN either then)
one only needs to make an engine simulator.
the most easy way is to use , drum roll, wait for it.... a real ECU. (they do sell the simulators but most mAKERS (fleabay) were sued by EPA. and fined. takes a license to sell them! and buy? )
THEY ARE SOLD, a fact, but I will not find them for you. EPA scares craap out of me...

the best test ecu is the most simple ECU, 1996, wins that award.
the older the ECU the more simple it is. (fact 1)
before 1996, is OBD1, there are no standards, period. (rare early obd2 excepted, a hand full of cars)
and engines, use a simple engine, 4 banger is best. any maker, the engine with the least sensors is best. fact2. (why make too much work here,)
Some ecu are super easy to fool....
one needs to apply all sensors to the ECU. CMP and CKP top that list. and the RPM. is key, most ECU spark and inject now, and over 300 RPM the ecu deems engine runs now. and sustains spark now.
i have no idea at all what your product does, Teen driver nanny box?
when the teen turns the key what are the blocking factors, you never said. them. if present.?
or is this system passive only. just logs data. on the TEEN. (and gps data sure) the OBD2 can let you log all throttle angles too. sure can. and engine loads. (and all PID data that YEAR is there to scan)
no clues here. what your NANNY does. (some are insurance nanny box for discount insurance)

but all OBD2 in usa you can monitor RPM on them all.
every one, they are called PIDs. wiki obd2 pid, bingo. The protocol and commands are there too, fully documented by USA laws.

so you key on, and watch the driver start car and when running, rpm goes over 300rpm, id look for >= 600rpm. that is running for sure
easy as apple pie.
All OBD2 works like that. all gas engines. cant speak for diesel, it not standardized, ,much. maybe on newer cars, but not old.
if you have question on OBD2 or how PIDS work
start here, first.
its all there to read, but does not telly you what makes and ECU happy nor details of simulation ,only how to communicate to the box.
https://en.wikipedia.org/wiki/OBD-II_PIDs

or
one could just take and ARM processor, dirt cheap $2 they are and free tools endless. (or an Ardiuno board for $12)
and programming it do only do PID OC hex
and send only 1000 rpm
blindly and every time. OC sent.
or a switch that shows. (test switch)
0 rpm
and
1000 rpm using the pid math above
it sends 2 bytes.

00,00 hex. is not running.
and
in binary
00, 10 hex,
10h is 16.decimal
16. times 256 is 4096.
4096. divided by 4. is 1024., and means Im running now.
this is sent out. if switch = 1.
and the other ends tests if over 300.
for run,. most cars do 700+ hot, low end , and sends 1500 rpm cold.(about)

one could make a tool for $2, with your code.
and $1 switch and a box for $5 and a wall wart for $5.
add the obd2 connector and tad more.
id just use the newers elm chip and do it that way,
per the data sheet on elm.\

not counterfeit so it includes programming, costs, this is the real maker not illegal imports.
https://www.elmelectronics.com/ic/elm327l/