WARNING: This page is about a different car, the 2001 Subaru Forester. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Identifying TCM Connector Pins (B54 & B55)
Fig 2: Checking I/O Signal With Ignition Switch On (1 Of 3)
Fig 3: Checking I/O Signal With Ignition Switch On (2 Of 3)
Fig 4: Checking I/O Signal With Ignition Switch On (3 Of 3)