Elm327 or similar device

[Weatheralls Auto]

1 example is the getting the Vin,
since the elm is getting extra bits the Vin returns Junk.

I am going to work with it over the week end, remove all white spaces etc to make the calculations simpler in hopes of filtering out what is not wanted.

[Weatheralls Auto]

Dealing with the vehicles in the shop today.
1998 LN2 2.2 Sunfire, works perfect even while running
2002 LN2 2.2 Cavalier, Too much chatter, can't get VIN and takes several attempts to get key process started correctly.

[Weatheralls Auto]

Just playing around today and having some fun with this car (98 Sunfire LN2 2.2)

using Hyperterminal, I send
ae02010000000000

that disables #1 Injector

[Weatheralls Auto]

and AE 02 00 80 00 00 00 turns it back on

[Weatheralls Auto]

The elm has a very small buffer so its hard to monitor but possible.
(I am monitoring my Tech2)

[Weatheralls Auto]

AE 02 00 80 00 00 00 00 Returns any Disabled injectors back on
AE 02 01 00 00 00 00 00 Disable Inj #1
AE 02 02 00 00 00 00 00 Disable Inj #2
AE 02 03 00 00 00 00 00 Disable Inj #3
AE 02 04 00 00 00 00 00 Disable Inj #4

Question is can I turn off more than 1 at a time? lol
Going to try

Edit, yup can actually turn off all 4 cylinders lol

[Weatheralls Auto]

AE 01 10 10 00 00 00 00 Turn Coolant Fan ON
AE 01 10 00 00 00 00 00 Turn Coolant Fan OFF
AE 01 00 00 00 00 00 00 Return Control to PCM


I seem to be having TOO much FUN lol

add
AC must be turned on for following commands
AE 01 40 40 00 00 00 00 Turn AC Comp Relay OFF
AE 01 40 00 00 00 00 00 Turn AC Comp Relay ON

Fuel Pump
AE 02 00 00 00 00 80 00 Turn OFF
AE 02 00 00 00 00 80 FF Turn ON

[Weatheralls Auto]

Alt L Terminal
AE 01 01 00 00 00 00 00 Turn OFF
AE 01 01 01 00 00 00 00 Alt @ Full Duty Cycle

[robertisaar]

there's something that always concerned me with OBD2: the alt duty cycle.

if whatever controls it fails, does it revert to a 100% duty cycle, 0%, or does it go off of the internal regulator or ???

[pocket-rocket]

Just playing around today and having some fun with this car (98 Sunfire LN2 2.2)

using Hyperterminal, I send
ae02010000000000

that disables #1 Injector

That would be funny to mess with someone you are riding with while running a scan with them driving, lol. "Dude, you've got a bad miss all of the sudden..." They freak out and you turn the injector back on, lol. BTW, Ben and I are working on a 96Achieva for a friend (3100 with the broken cam syndrome) that I can put power to and run this app to get the seed/key from it if you like.

[Weatheralls Auto]

Robert, When I "DeActive" the L Terminal of the Alt, it goes to 100%.
So I would think that if there is a fault it wuld default to 100%

PR that would be sweet, the more info I can get the better.

As for playing pranks, you can get the bluetooth elm devices, plug it in when ur buddy driving with out him knowing. Could have lots of fun lol

[robertisaar]

Robert, When I "DeActive" the L Terminal of the Alt, it goes to 100%.
So I would think that if there is a fault it wuld default to 100%

so, the PCM is the alternator's regulator? that is so VERY odd...

[Weatheralls Auto]

EGR Command from 0 to 100% by 10s then back down to 0% then return control to PCM
AE 01 00 00 00 00 40 1A
AE 01 00 00 00 00 40 33
AE 01 00 00 00 00 40 4D
AE 01 00 00 00 00 40 66
AE 01 00 00 00 00 40 80
AE 01 00 00 00 00 40 99
AE 01 00 00 00 00 40 B3
AE 01 00 00 00 00 40 CC
AE 01 00 00 00 00 40 E6
AE 01 00 00 00 00 40 FF
AE 01 00 00 00 00 40 E6
AE 01 00 00 00 00 40 CC
AE 01 00 00 00 00 40 B3
AE 01 00 00 00 00 40 99
AE 01 00 00 00 00 40 80
AE 01 00 00 00 00 40 66
AE 01 00 00 00 00 40 4D
AE 01 00 00 00 00 40 33
AE 01 00 00 00 00 40 1A
AE 01 00 00 00 00 40 00
AE 01 00 00 00 00 00 00

[Weatheralls Auto]

The PCM can reduce the amount the Alt produces to reduce load when not needed.

[Weatheralls Auto]

Ahhhh, Need to test if this works across more platforms

CKP Variation ReLern
AE 01 00 00 02 02 00 00
Then hit throttle to WOT until fuel cutoff!!!!