Location of the tcm on a 2004 suzuki verona

All answers USA spec, cars., so.......?????
i can answer, now.
2004, on most cars, about 1996 or so ,moved the TCM to the ECU
and renamed it PCM, (do to faster processors. they could and DID)
(some exceptions like toy land cruisers etc,eg special 4wd o r?)

why not, post the symptoms and ask for help , and not post
wild goose chases to skilled, mech. why?
lick doctor where, is my cardial notch?
he then says,, you have symptoms? sure.

i changed lower o2,? is that the upper stream or down stream)
bank1 sensor 1 or 2,
lower means nothing, both are lower, one is more lower that other.
the top sensor is for AFR, air fuel mix, calcs.
the lowest is called sensor 2, and is for ONLY monitoring performance of your catalysis.

sounds like you dont have a scan tool to see real errors?
DTC errors?

read the FSM yet? for 4 bucks
bingo
https://suzukipitstopplus.com/Products/1135-2004-verona-service-manual.aspx


RTM read the manual, see ALL !

which engine? vast differences here, i4 and V6 !!!!

• 2.0 L L34 I4 (gasoline)
• 2.5 L XK6 I6 (gasoline)

Try googling for the infromation