Subaru Legacy 2002 Service Manual page 3195

DIAGNOSTICS FOR A/C SYSTEM FAILURE (RHD MODEL)
HVAC System (Auto A/C) (Diagnostics)
D: FRESH/RECIRC DOES NOT CHANGE
S001650F72
TROUBLE SYMPTOM:
FRESH/RECIRC mode door does not change.
WIRING DIAGRAM:
B4M2450
AC-52