WARNING: This page is about a different car, the 2004 Subaru Outback, 2004 Subaru Legacy, and 2004 Subaru Baja. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Identifying Engine Control Module (ECM) I/O Signal (Electrical Specification) (1 Of 4)
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Fig 2: Identifying Engine Control Module (ECM) I/O Signal (Electrical Specification) (2 Of 4)
Courtesy of SUBARU OF AMERICA, INC.
Fig 3: Identifying Engine Control Module (ECM) I/O Signal (Electrical Specification) (3 Of 4)
Courtesy of SUBARU OF AMERICA, INC.
Fig 4: Identifying Engine Control Module (ECM) I/O Signal (Electrical Specification) (4 Of 4)