FORScan doesn't support Mazda 7G as explained here. However, FORScan can still connect to these cars and provide very basic functionality like module identification and reading/resetting errors. But as our support experience shows, even this meager functionality is demanded by some users so they're looking for a way to connect.
It can be connected in the same way as for tuned PCMs (the way). The following Mazda 7G PCM IDs that are available in FORScan database and can be used for this purpose:
PA2J-188K2-B : Mazda 3 BP 2.0 PE (unknown transmission and driveline)
PA8X-188K2-D : Mazda 3 BP 2.0 PE 2WD AUTO
PG18-188K2-K : Mazda 3 BP 2.0 PE 2WD MAN
PA6P-188K2-B : Mazda 3 BP 2.0 PE 4WD AUTO
HFJ4-188K2-E : Mazda 3 BP 2.0 SkyActiv-X (unknown transmission and driveline)
HF07-188K2-W : Mazda 3 BP 2.0 SkyActiv-X 2WD MAN
HF08-188K2-W : Mazda 3 BP 2.0 SkyActiv-X 4WD MAN
HF11-188K2-X : Mazda 3 BP 2.0 SkyActiv-X 2WD AUTO
HF14-188K2-X: Mazda 3 BP 2.0 SkyActiv-X 4WD AUTO
PX59-188K2-J : Mazda 3 BP 2.5 PY 2WD MAN
PXPH-188K2-G : Mazda 3 BP 2.5 PY 2WD AUTO
PX07-188K2-R : Mazda 3 BP 2.5 PY 4WD_AUTO
PY66-188K2-E : Mazda CX-5_2.5 PY SkyActiv 2WD AUTO
PY67-188K2-E : Mazda CX-5 2.5_PY SkyActiv 4WD AUTO
PARX-188K2-J : Mazda CX-30 2.0 PE (unknown transmission and driveline)
PG32-188K2-E : Mazda CX-30 2.0 PE 2WD AUTO
PAHJ-188K2-D : Mazda CX-30 2.0 PE 4WD AUTO
PG28-188K2-H : Mazda CX-30 2.0 PE 2WD MAN
PG37-188K2-E : Mazda CX-30 2.0 PE 4WD MAN
HFL4-188K2-F : Mazda CX-30 2.0 SkyActiv-X (unknown transmission and driveline)
HF69-188K2-R : Mazda CX-30 2.0 SkyActiv-X 2WD MAN
HF73-188K2-P : Mazda CX-30 2.0 SkyActiv-X 4WD MAN
HF71-188K2-S : Mazda CX-30 2.0 SkyActiv-X 2WD AUTO
HF75-188K2-X : Mazda CX-30 2.0 SkyActiv-X 4WD AUTO
PGNT-188K2-D : Mazda CX-30 2.0 e-SkyActiv-G 2WD AUTO
PXM1-188K2-F : Mazda CX-30 2.5 PY 2WD AUTO
PXM2-188K2-F : Mazda CX-30 2.5 PY 4WD AUTO
PXGH-188K2-H : Mazda CX-60 2.5 e-SkyActiv-G 4WD AUTO
T304-188K2-N : Mazda CX-60 3.3 e-SkyActiv-D 4WD AUTO
T303-188K2-N : Mazda CX-60 3.3 e-SkyActiv-D 2WD AUTO
S805-188K2-D: Mazda 3 1.8 S8
S8K7-188K2-C: CX-30 1.8 S8