Page 2417 of 2898

3. Capacity Control=NJHA0207S0203+Refrigerant pressure on suction side is low during high speed driving or when ambient or interior tempera-
ture is low.
+The bellows expands when refrigerant pressure on the suction pressure side drops below approximately
177 kPa (1.77 bar, 1.8 kg/cm
2, 26 psi).
Since suction pressure is low, it makes the suction port close and the discharge port open. Thus, crank-
case pressure becomes high as high pressure enters the crankcase.
+The force acts around the journal pin near the swash plate, and is generated by the pressure difference
before and behind the piston.
The drive lug and journal pin are located where the piston generates the highest pressure. Piston pres-
sure is between suction pressure Ps and discharge pressure Pd, which is near suction pressure Ps. If
crankcase pressure Pc rises due to capacity control, the force around the journal pin makes the swash
plate angle decrease and also the piston stroke decrease. In other words, crankcase pressure increase
triggers pressure difference between the piston and the crankcase. The pressure difference changes the
angle of the swash plate.
RHA474C
DESCRIPTION
CSV613 Variable Displacement Compressor (Cont'd)
HA-17
Page 2418 of 2898
Component LayoutNJHA0122
RHA589H
DESCRIPTION
Component Layout
HA-18
Page 2419 of 2898
Control OperationNJHA0123
RHA747H
FAN CONTROL SWITCHNJHA0123S01This switch turns the fan ON and OFF, and controls fan speed.
MODE CONTROL KNOBNJHA0123S02This knob controls the outlet air flow.
TEMPERATURE CONTROL KNOBNJHA0123S03This knob allows you to adjust the temperature of the discharge air.
REAR WINDOW DEFOGGER SWITCHNJHA0123S07When illumination is ON, rear window is defogged.
AIR CONDITIONER (A/C) SWITCHNJHA0123S05The air conditioner switch controls the A/C system. When the switch is depressed with the fan ON, the com-
pressor will turn ON. The indicator lamp will also light.
The air conditioner cooling function operates only when the engine is running.
RECIRCULATION (REC) SWITCHNJHA0123S08Recirculation (REC) position: Interior air is recirculated inside the vehicle. (The indicator lamp will light.)
Fresh (FRE) position: Outlet air is drawn into the passenger compartment. (The indicator lamp will not light.)
DESCRIPTION
Control Operation
HA-19
Page 2420 of 2898
Discharge Air FlowNJHA0124
RHA748H
DESCRIPTION
Discharge Air Flow
HA-20
Page 2421 of 2898
System DescriptionNJHA0125SWITCHES AND THEIR CONTROL FUNCTIONSNJHA0125S01
Knob/SwitchKnob/Switch position
Compressor
A/C VENT B/L FOOT D/F DEF REC FRE
A/CjON*1
Mode
jÐ
jÐ
jÐ
jÐ
jÐ
Intake
jÐ
jÐ
*1: Compressor is operated by ECM.
MAX HOT DOOR FUNCTION FOR SCANDINAVIA AND
COLD SPEC MODELS ONLY
NJHA0125S02
RHA812H
DESCRIPTION
System Description
HA-21
Page 2422 of 2898
Component LocationNJHA0126ENGINE COMPARTMENTNJHA0126S01
RHA791H
TROUBLE DIAGNOSES
Component Location
HA-22
Page 2423 of 2898
PASSENGER COMPARTMENTNJHA0126S02
RHA792H
TROUBLE DIAGNOSES
Component Location (Cont'd)
HA-23
Page 2424 of 2898
Wiring Diagram Ð HeaterNJHA02024-DOOR SEDANNJHA0202S02
HHA211
TROUBLE DIAGNOSES
Wiring Diagram Ð Heater
HA-24