Subaru Legacy (2005 year). Service manual — part 870
AC-49
HVAC SYSTEM (HEATER, VENTILATOR AND A/C)
Heater Cock Solenoid Valve
29.Heater Cock Solenoid Valve
A: REMOVAL
1) Drain the engine coolant. <Ref. to CO(H4SO
2.0)-13, DRAINING OF ENGINE COOLANT, En-
gine Coolant.>
2) Disconnect the harness connector (A) of the
heater cock solenoid valve.
3) Remove the two bolts to remove the heater cock
solenoid from the bracket.
4) Pull out the heater cock solenoid. Loosen the
hose clamp and disconnect the two heater hoses.
B: INSTALLATION
Install in the reverse order of removal.
C: INSPECTION
1) Remove the heater cock solenoid valve. <Ref. to
AC-49, REMOVAL, Heater Cock Solenoid Valve.>
2) Connect the positive terminal of battery to No. 1
terminal of heater cock solenoid valve, and the
ground terminal to No. 2 terminal. Check that the
heater cock solenoid valve opens and closes nor-
mally.
If any failure is found, replace the heater cock sole-
noid valve.
AC-00936
(A)
1
2
AC-00888
AC-50
HVAC SYSTEM (HEATER, VENTILATOR AND A/C)
A/C Filter
30.A/C Filter
A: REPLACEMENT
1) Remove the instrument panel side cover.
2) Remove the clip and damper (string).
3) Remove the tray for car registration.
4) Remove the A/C filter.
5) Install in the reverse order of removal.
(1) Clip
(2) Damper
PM-00273
PM-00274
(1)
(2)
(1)
PM-00275
PM-00276
AC-51
HVAC SYSTEM (HEATER, VENTILATOR AND A/C)
General Diagnostic Table
31.General Diagnostic Table
A: INSPECTION
Symptom
Repair order
Blower motor
Does not operate.
Fuse
Blower motor relay
Blower motor
Blower motor resistor
Blower switch
Wire harness
Noise
Blower motor
Compressor
Does not operate.
Refrigerant
Fuse
Air conditioning relay
Magnet clutch
Compressor
Pressure switch
A/C switch
Blower switch
Wire harness
Lock sensor (3.0 L model)
Noise
V-Belt
V-Belt tensioner
Magnet clutch
Compressor
Cold air not emitted.
Refrigerant
V-Belt
Magnet clutch
Compressor
Pressure switch
A/C switch
Blower switch
Wire harness
Heater duct
Heater vent duct
Warm air not emitted.
Engine coolant
Blower switch
Heater core
Heater cock solenoid valve
Temperature of air from vents does not change.
Engine coolant
Air mix actuator (Auto A/C)
Wire harness (Auto A/C)
Temperature control cable (Manual A/C)
Unable to switch blow vents.
Mode actuator (Auto A/C)
Air flow switch (Auto A/C)
Wire harness (Auto A/C)
Mode cable (Manual A/C)
Unable to switch suction vents.
Air inlet select switch (Auto A/C)
FRESH/RECIRC actuator (Auto A/C)
Wire harness (Auto A/C)
Intake cable (Manual A/C)
AC-52
HVAC SYSTEM (HEATER, VENTILATOR AND A/C)
General Diagnostic Table
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