Subaru Impreza 3 / Impreza WRX / Impreza WRX STI. Service manual — part 586
AC-3
General Description
HVAC SYSTEM (HEATER, VENTILATOR AND A/C)
Radiator fan (Main fan)
Motor type
Magnet
Power consumption
120 W
Fan outer diameter
318.5 mm (12.5 in)
Idle speed
MPFI model
No load
700±100 rpm
A/C ON
750±100 rpm
Triple switch
(Pressure switch)
Low-pressure switch
operating pressure
ON → OFF
196±25 kPa
(2.0±0.25 kgf/cm
2
, 28.4±3.6 psi)
OFF → ON
225±30 kPa
(2.30±0.31 kgf/cm
2
, 32.6±4.3 psi)
High-pressure switch
operating pressure
ON → OFF
2,940±200 kPa
(29.98±2.04 kgf/cm
2
, 426.3±29 psi)
OFF → ON
2,350±200 kPa
(24.00±2.04 kgf/cm
2
, 340.7±29.0 psi)
Middle-pressure switch
operating pressure
ON → OFF
1,470±120 kPa
(14.99±1.22 kgf/cm
2
, 213.15±17.4 psi)
OFF → ON
1,770±100 kPa
(18.05±1.02 kgf/cm
2
, 256.65±14.5 psi)
Thermo-control amplifier working temperature
(1) ON
(2) OFF
(3) 1.5±0.3°C (34.7±0.5°F)
(4) 1.0±0.5°C (33.8±0.9°F)
Item
Specifications
AC-00601
(1)
(2)
(3)
(4)
AC-4
General Description
HVAC SYSTEM (HEATER, VENTILATOR AND A/C)
B: COMPONENT
1. HEATER COOLING UNIT
• Auto A/C model
(1)
Expansion valve
(13) Drain hose
(25) Aspirator
(2)
Gasket
(14) Mode actuator
(26) Air mix actuator
(3)
Grommet
(15) Heater core pipe
(27) O-ring
(4)
Case
(16) Heater pipe cover
(28) Mode main lever
(5)
O-ring
(17) Heater core cover
(29) Vent door link
(6)
Evaporator pipe
(18) O-ring
(30) Defroster door link
(7)
Evaporator
(19) Clamp
(31) Mode link
(8)
Lining
(20) Heater core
(9)
Evaporator sensor
(21) Pipe clamp
Tightening torque: N·m (kgf-m, ft-lb)
(10) Evaporator pipe cover
(22) Foot duct (LH)
T1: 5.0 (0.51, 3.7)
(11) Evaporator cover
(23) Foot duct (RH)
T2: 6.7 (0.68, 4.9)
(12) Power transistor
(24) Heater case
T3: 7.5 (0.76, 5.5)
AC-02143
(1)
(2)
(3)
(4)
(5)
(27)
(27)
(6)
(7)
(8)
(9)
(10)
(11)
(12)
(13)
(14)
(29)
(28)
(15)
(16)
(17)
(18)
(19)
(20)
(21)
(22)
(23)
(24)
(25)
(30)
(31)
(26)
(5)
T3
T3
T2
T1
AC-5
General Description
HVAC SYSTEM (HEATER, VENTILATOR AND A/C)
• Manual A/C model
(1)
Expansion valve
(13) Drain hose
(25) Mode main lever
(2)
Gasket
(14) Heater core pipe
(26) Vent door link
(3)
Grommet
(15) Heater pipe cover
(27) Defroster door link
(4)
Case
(16) Heater core cover
(28) Mode link
(5)
O-ring
(17) O-ring
(6)
Evaporator pipe
(18) Clamp
Tightening torque: N·m (kgf-m, ft-lb)
(7)
Evaporator
(19) Heater core
T1: 5.0 (0.51, 3.7)
(8)
Lining
(20) Pipe clamp
T2: 6.7 (0.68, 4.9)
(9)
Thermostat
(21) Foot duct (LH)
T3: 7.5 (0.76, 5.5)
(10) Evaporator pipe cover
(22) Foot duct (RH)
(11) Evaporator cover
(23) Heater case
(12) Resistor
(24) O-ring
AC-03111
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(10)
(12)
(13)
(14)
(15)
(16)
(17)
(18)
(19)
(20)
(21)
(23)
(24)
(22)
(5)
T3
T3
T2
T1
(27)
(26)
(28)
(25)
(25)
(11)
AC-6
General Description
HVAC SYSTEM (HEATER, VENTILATOR AND A/C)
2. BLOWER MOTOR UNIT
(1)
Lining
(6)
Hose
(11) Relay holder bracket
(2)
Upper case
(7)
Lower case
(3)
Intake door actuator
(8)
Lining
Tightening torque: N·m (kgf-m, ft-lb)
(4)
Filter
(9)
Intake door link
T: 7.5 (0.76, 5.5)
(5)
Blower motor ASSY
(10) Relay bracket
AC-01768
T
T
T
(1)
(4)
(5)
(6)
(7)
(10)
(11)
(8)
(3)
(9)
(2)
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