Subaru Legacy 2002 Service Manual page 3175

DIAGNOSTICS CHART FOR DIAGNOSIS SYSTEM (RHD MODEL)
HVAC System (Auto A/C) (Diagnostics)
6. Diagnostics Chart for Diagnosis System (RHD Model)
A: SELF-DIAGNOSIS MODE
(1) Temperature select dial
(2) AUTO switch
S001648F36
(3) REC switch
(4) DEF switch
AC-32
S001648
(5) MODE switch
B4M2576A