1986 TOYOTA CAMRY V20 air condition

2. INSPECT FAN MOTOR
(a) Disconnect 2±P connector of the fan motor.
(b) Using wire harness, apply battery voltage to the con-
nector.
(c) Confirm smooth rotation of the motor within the spe-
cified current flow.
Standard current: 6.6
+0.8 A
If defective, replace the motor.
3. CHECK HIGH PRESSURE SWITCH
(a) Install manifold gauge set.
(See page AC±23)
(b) Check continuity between the two terminals of the
pressure switch when refrigerant pressure is less
than approx. 12.5 kg/cm2 (178 psi, 1,226 kPa).
(e) Check that there is no continuity between two termi-
nals of the pressure switch when refrigerant pres-
sure is more than approx. 15.5 kg/Cm2 (220 psi,
1,520 kPa).
If continuity is not as specified, replace the switch.
4. CHECK WATER TEMPERATURE SWITCH
(See page AC±49)
PRESSURE SWITCH
(See page AC±12)
ON±VEHICLE INSPECTION
1. DISCONNECT CONNECTOR OF PRESSURE SWITCH
2. INSPECT PRESSURE SWITCH
(a) Install the manifold gauge set.
(b) Observe the gauge reading.
(c) Check continuity between the two terminals of the
pressure swtich shown in the below.
If defective, replace the pressure switch.
3. CONNECT CONNECTOR OF PRESSURE SWITCH
± AIR CONDITIONING SYSTEMPressure SwitchAC±36

RELAYS
INSPECTION OF A/C RELAY
1. REMOVE COVER OF RELAY BOX
2. REMOVE RELAY
3. INSPECT RELAY CONTINUITY
(Magnetic Clutch Relay)
If continuity is not as specified, replace the relay.
(A/C Fan Relay No. 3)If continuity is not as specified, replace the relay.
If continuity is not as specified, replace the
relay.
Apply battery voltage to
terminal 2 (±j and 6 (+)Apply battery voltage to
terminal 1 and 3
Apply battery ±voltage to
terminal 1 and 3
(A/C Fan Relay No. 2)
Condition
ConditionCondition
Terminal
Terminal
Terminal
Constant
ConstantConstant
± AIR CONDITIONING SYSTEMRelaysAC±37

WATER TEMPERATURE SWITCH
All±Trae/4WD Model
INSPECT SWITCH CONTINUITY
Inspect the switch continuity.
If detective, replace the water temperature
switch.If continuity is not as specified, replace the
relay. All±Trac/4WD Model
(A/C Cut Relay)
Apply battery voltage to
terminal 1 and 2Terminals
Condition
Constant
± AIR CONDITIONING SYSTEMRelaysAC±38

WATER TEMPERATURE SWITCH
All±Trae/4WD Model
INSPECT SWITCH CONTINUITY
Inspect the switch continuity.
If detective, replace the water temperature
switch.If continuity is not as specified, replace the
relay. All±Trac/4WD Model
(A/C Cut Relay)
Apply battery voltage to
terminal 1 and 2Terminals
Condition
Constant
± AIR CONDITIONING SYSTEMWater Temperature SwitchAC±38

REMOVAL OF COOLING UNIT
1. DISCONNECT NEGATIVE CABLE FROM BATTERY
2. DISCHARGE REFRIGERATION SYSTEM
3. DISCONNECT SUCTION TUBE FROM COOLING UNIT
OUTLET FITTING
4. DISCONNECT LIQUID TUBE FROM COOLING UNIT
INLET FITTING
HINT: Cap the open fittings immediately to keep moisture
out of the system.
5. REMOVE GROMMETS FROM INLET AND OUTLET
FITTINGS
6. REMOVE GLOVE BOX
7. DISCONNECT CONNECTORS
8. REMOVE COOLING UNIT
Remove three nuts and four bolts.
COOLING UNIT
(See page AC±12)
ON±VEHICLE INSPECTION OF
EXPANSION VALVE
1. CHECK QUANTITY OF REFRIGERANT GAS DURING
REFRIGERATION CYCLE
2. INSTALL MANIFOLD GAUGE SET
(See page AC±23)
3. RUN ENGINE
Run the engine at 2.000 rpm at least 5 minutes.
4. CHECK EXPANSION VALVE
If the expansion valve is clogged,the low pressure reading
will drop to 0 kg/cm2 (0 psi, 0 kPa), otherwise it is OK.
± AIR CONDITIONING SYSTEMCooling UnitAC±39

1. REMOVEL LOWER AND UPPER UNIT CASES
(a) Discoonnect connectors
(b) Remove wire harness.
(c) Remove four clips.
(d) Remove five screws.
(e) Remove condenser fan control amplifier (2vZ±FE
E/G) or A/C cut amplifier (3S±FE E/G).
(f) Remove compressor control amplifier (2VZ±FE
E/G) or
A/C cut relay (All±Trac/4WD model).
(g) Remove upper unit case.
(h) Remove thermistor with thermistor holder.
(i) Remove lower unit case.
2. REMOVE EXPANSION VALVE
(a) Disconnect the liquid tube from the inlet fitting of the
expansion valve.
(b) Remove the packing and heat sensing tube from
suction tube of evaporator.
DISASSEMBLY OF COOLING UNIT
± AIR CONDITIONING SYSTEMCooling UnitAC±40

Evaporator
INSPECTION OF EVAPORATOR
1. CHECK EVAPORATOR FINS FOR BLOCKAGE
If the fins are clogged, clean them with compressed air.
NOTICE: Never use water to clean the evaporator.
2. CHECK FITTINGS FOR CRACKS OR SCRATCHES
Repair as necessary.
ASSEMBLY OF COOLING UNIT
INSTALL COMPONENTS ON EVAPORATOR
(a) Connect the expansion valve to the inlet fitting of the
evaporator. Torque the nut.
Torque: 230 kg±cm (16 ft±Ib, 22 N±m)
HINT: Be sure that the 0±ring are positioned on the tube
fitting.
(b) Install the holder to the suction tube with heat sensi-
tizing tube.
(c) Connect the liquid tube to the inlet fitting of the expan-
sion valve. Torque the nut.
Torque: 140 kg±cm (10 ft±Ib, 14 N±m)
(d) Install lower unit case to the evaporator.
(e) Install thermistor to the evaporator.
(f) Install upper unit case.
(g) Install four screws.
(h) Install four clips.
(i) Install wire harness.
(j) Install condenser fan control amplifier.
(k) Install compressor control amplifier.
(I) Connect connectors.
INSTALLATION OF COOLING UNIT
1. INSTALL COOLING UNIT
Install the cooling unit with three nuts and four bolts.
2. CONNECT CONNECTORS
3. INSTALL GLOVE BOX REINFORCEMENT(c) Remove the expansion valve.
± AIR CONDITIONING SYSTEMCooling UnitAC±41

Evaporator
INSPECTION OF EVAPORATOR
1. CHECK EVAPORATOR FINS FOR BLOCKAGE
If the fins are clogged, clean them with compressed air.
NOTICE: Never use water to clean the evaporator.
2. CHECK FITTINGS FOR CRACKS OR SCRATCHES
Repair as necessary.
ASSEMBLY OF COOLING UNIT
INSTALL COMPONENTS ON EVAPORATOR
(a) Connect the expansion valve to the inlet fitting of the
evaporator. Torque the nut.
Torque: 230 kg±cm (16 ft±Ib, 22 N±m)
HINT: Be sure that the 0±ring are positioned on the tube
fitting.
(b) Install the holder to the suction tube with heat sensi-
tizing tube.
(c) Connect the liquid tube to the inlet fitting of the expan-
sion valve. Torque the nut.
Torque: 140 kg±cm (10 ft±Ib, 14 N±m)
(d) Install lower unit case to the evaporator.
(e) Install thermistor to the evaporator.
(f) Install upper unit case.
(g) Install four screws.
(h) Install four clips.
(i) Install wire harness.
(j) Install condenser fan control amplifier.
(k) Install compressor control amplifier.
(I) Connect connectors.
INSTALLATION OF COOLING UNIT
1. INSTALL COOLING UNIT
Install the cooling unit with three nuts and four bolts.
2. CONNECT CONNECTORS
3. INSTALL GLOVE BOX REINFORCEMENT(c) Remove the expansion valve.
± AIR CONDITIONING SYSTEMCooling UnitAC±41