Subaru 2002 IMPREZA Service Manual page 776

FUEL INJECTION (FUEL SYSTEMS)
13.Engine Control Module
A: REMOVAL
1) Disconnect the ground cable from battery.
2) Remove the lower inner trim of passenger side.
<Ref. to EI-45, REMOVAL, Lower Inner Trim.>
3) Detach the floor mat of front passenger seat.
4) Remove the protect cover.
5) Remove the nuts (A) which hold ECM to bracket.
6) Remove the clip (B) from bracket.
(A)
(A)
7) Disconnect the ECM connectors and take out
the ECM.
ENGINE CONTROL MODULE
G6M0095
EN0532
(B)
EN0533
FU(w/oOBD)-48
B: INSTALLATION
Install in the reverse order of removal.
CAUTION:
When replacing the ECM, be careful not to use
the wrong spec. ECM to avoid any damage to
fuel injection system.