Subaru Impreza 2003 Service Manual page 2762

HVAC SYSTEM (HEATER, VENTILATOR AND A/C)
24.General Diagnostic Table
A: INSPECTION
Blower motor
Compressor
Cold air not emitted.
Warm air not emitted.
Temperature of air from vents does not change.
Unable to switch blow vents.
Unable to switch suction vents.
GENERAL DIAGNOSTIC TABLE
Symptom
Doesn't move.
Strange noise.
Doesn't move.
Strange noise
Fuse
Blower motor relay
Blower motor
Blower motor resistor
Blower switch
Wire harness
Blower motor
Refrigerant
Fuse
Air conditioning relay
Magnet clutch
Compressor
Pressure switch
A/C switch
Blower switch
Wire harness
V-Belt
Magnet clutch
Compressor
Refrigerant
V-Belt
Magnet clutch
Compressor
Pressure switch
A/C switch
Blower switch
Wire harness
Heater duct
Heater vent duct
Engine coolant
Blower switch
Heater core
Engine coolant
Mode actuator
Wire harness
Mode actuator
Air flow switch
Wire harness
Air inlet select switch
FRESH/RECIRC actuator
Wire harness
AC-44
Repair order