Diagnostic Chart:

WARNING: This page is about a different car, the 2004 Subaru Impreza. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Diagnosis Chart (1 Of 2)

Courtesy of SUBARU OF AMERICA, INC.

Fig 2: Diagnosis Chart (2 Of 2)

Courtesy of SUBARU OF AMERICA, INC.