Subaru Legacy 2002 Service Manual page 3183

DIAGNOSTICS FOR A/C SYSTEM FAILURE (LHD MODEL)
HVAC System (Auto A/C) (Diagnostics)
D: COMPARTMENT TEMPERATURE DOES NOT CHANGE FROM "SET"
TEMPERATURE OR AIR CONDITIONING SYSTEM DOES NOT RESPOND
QUICKLY
S001649F73
WIRING DIAGRAM:
4 CYLINDER ENGINE MODEL
B4M2440
AC-40