Subaru Legacy 2003 Service Manual page 971

FUEL INJECTION (FUEL SYSTEMS)
17.Engine Control Module
A: REMOVAL
1) Disconnect battery ground cable.
2) Remove lower inner trim of passenger side.
<Ref. to EI-39, REMOVAL, Lower Inner Trim.>
3) Detach floor mat of front passenger seat.
4) Remove protect cover.
5) Remove nuts which hold ECM to bracket.
ENGINE CONTROL MODULE
FU-00009
FU-00514
FU-00593
FU-00594
FU(H6DO)-46
6) Remove clip from bracket.
7) Disconnect ECM connectors and take out ECM.
B: INSTALLATION
Install in the reverse order of removal.
CAUTION:
When replacing ECM, be careful not to use the
wrong spec. ECM to avoid any damage to the
fuel injection system.
FU-00595