Subaru Legacy (2005 year). 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