How do i reset my innova 3100 scanner - Innova 3100 OBD II Code Reader

It should have something connected to it. Plug it in to the vehicle and then turn it on.

https://www.google.com/search?q=Innova+3100A

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NO car told at all, maker yes,model no, and year no.
In USA the first OBD2 car is 1996. so there is that fact.
this is easy stuff scan tools
rule #1 besides ,Innova batteries good.
1: pin 16 on the OBD2 DLC jack must be 12vdc, if not the fuse is blown in the car. bingo , CAUSE.

rule #2, old scan tools from 1996 to even 2007 can not do new cars CAN_bus communications at all and in fact the 2 pins on the tool are (if)missing, pin.6 and 14 pair. is can_bus.network is missing.

YOU SAID OTHER VEHICLES FAILS BUT GAvE NO EXAMPLES.
NOR TOLD THE INNOVA MODEL.# I have many here..

IF the tool is old, most these car will fail

http://www.auterraweb.com/aboutcan.html

the best tool is in fact marked CAN_BUS certified..

OBD2 is a USA invented standard and works on all cars here 96up
but CAN_ bus was added later, each tool maker added it , as late as 2008, some were slow. 2004 is better year to do it but many did not.
All do now. modern tools not old NOS (new old stock tools)

ABS and SRS is a totally other story.
topic engines ONLy.
the original Innova 3100, (old) fails on most new cars, lacks can-bus
they kept the name 3100 and added a letter to the end that fixes this problem. but is newer tool, (no free upgrade)
t reset the tool, unplug it from car.
remove all tool batteries for 15min and put back./
the tool does not lock up to any car it is just a passive receive only scanner, it can not transmit and exercises cars devices..
id does allow reading all engine sensors live, PIDs or some transmissions..
Innova pretends their oldest tool 3100, (ver0) dose not exist, they have zero info or support on their old tools.. 3100G,F,J,"SR" and up yes.
yes the told has CARS PCM DTC reset button and does work , but not if CAN_bus not supported in the tool.

Take batterys out for fewmin to clear scanner

The scanner check procedure for Innova or Innova venturer is as follows:
(1) Turn the ignition switch to OFF (disconnected);
(2) Plug the scanner power cord into the cigarette lighter holder;
(3) Connect the scanner to the diagnostic communication circuit or the diagnostic socket of the check connector;
(4) Turn on the ignition switch; start the scanner to check the fault code;
(5) Turn off the ignition switch for troubleshooting and analysis, then turn on the ignition switch, and use the scanner to erase the stored fault code;
(6) Take off the scanner.

read your manual,pg 19 20 and 21 , http://www.innova.com/Content/Support/Manual/Innova/Manual_3100a_E.pdf

INNOVA 3150 ABS

it doesnt read older cars etc,it states that on the box and the manual,
https://www.innova.com/Content/Support/Manual/Innova/Manual_3150b_E.pdf

Because it is likely not up to date on CAN BUS technology, an uprade is suggested.

http://www.innova.com/en-US/support/ProductSupport

The innova 3100 is not made to work with that make of vehicle!

I was looking for the same thing and found it here:

http://www.canobd2.com/Support/Downloads.aspx