1986 TOYOTA CAMRY V20 battery

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

4. INSTALL GROMMETS ON INLET AND OUTLET
FITTINGS
5. CONNECT LIQUID TUBE TO COOLING UNIT INLET
FITTING
Torque the nut.
Torque: 140 kg±cm (10 ft±Ib, 14 N±m)
6. CONNECT SUCTION TUBE TO COOLING UNIT
OUTLET FITTING
Torque the nut.
Torque: 330 kg±cm (24 ft±ib, 32 N±m)
7. IF EVAPORATOR WAS REPLACED, ADD
COMPRESSOR OIL TO COMPRESSOR
Add 40 ± 50 cc (1.4 ± 1.7 fl.oz.)
Compressor oil: DENSOOIL 6,
SUNISO NO. 5GS or equivalent
8. CONNECT NEGATIVE CABLE TO BATTERY
9. EVACUATE AIR FROM AIR CONDITIONING SYSTEM
10. CHARGE AIR CONDITIONING SYSTEM WITH
REFRIGERANT AND CHECK FOR GAS LEAKAGE
Specified amount: 600 ± 700 g (1.3 ± 1.7 Ib)
REFRIGERANT LINES
(See page AC±12)
1. INSPECT HOSES AND TUBES FOR LEAKAGE
Use a gas leak detector. Replace, if necessary.
2. CHECK THAT HOSE AND TUBE CLAMPS ARE NOT
LOOSE
Tighten or replace as necessary.
REPLACEMENT OF REFRIGERANT
LINES
1. DISCHARGE REFRIGERATION SYSTEM
2. REPLACE FAULTY TUBE OR HOSE
HINT: Cap the open fitting immediately to keep moisture
out of the system.
3. TIGHTENING TORQUE FOR O±RING AND BOLTED
TYPE FITTINGS
(See page AC±12)
4. EVACUATE AIR FROM AIR CONDITIONING SYSTEM
5. CHARGE AIR CONDITIONING SYSTEM WITH
REFRIGERANT AND CHECK FOR GAS LEAKAGE
Specified amount: 600 ± 750 g (1.3 ± 1.7 Ib)
± AIR CONDITIONING SYSTEMCooling UnitAC±42

4. INSTALL GROMMETS ON INLET AND OUTLET
FITTINGS
5. CONNECT LIQUID TUBE TO COOLING UNIT INLET
FITTING
Torque the nut.
Torque: 140 kg±cm (10 ft±Ib, 14 N±m)
6. CONNECT SUCTION TUBE TO COOLING UNIT
OUTLET FITTING
Torque the nut.
Torque: 330 kg±cm (24 ft±lb, 32 N±m)
7. IF EVAPORATOR WAS REPLACED, ADD
COMPRESSOR OIL TO COMPRESSOR
Add 40 ± 50 cc (1.4 ± 1.7 fl.oz.)
Compressor oil: DENSOOIL 6,
SUNISO NO. 5GS or equivalent
8. CONNECT NEGATIVE CABLE TO BATTERY
9. EVACUATE AIR FROM AIR CONDITIONING SYSTEM
10. CHARGE AIR CONDITIONING SYSTEM WITH
REFRIGERANT AND CHECK FOR GAS LEAKAGE
Specified amount: 600 ± 700 g (1.3 ± 1.7 Ib)
REFRIGERANT LINES
(See page AC±12)
1. INSPECT HOSES AND TUBES FOR LEAKAGE
Use a gas leak detector. Replace, if necessary.
2. CHECK THAT HOSE AND TUBE CLAMPS ARE NOT
LOOSE
Tighten or replace as necessary.
REPLACEMENT OF REFRIGERANT
LINES
1. DISCHARGE REFRIGERATION SYSTEM
2. REPLACE FAULTY TUBE OR HOSE
HINT: Cap the open fitting immediately to keep moisture
out of the system.
3. TIGHTENING TORQUE FOR O±RING AND BOLTED
TYPE FITTINGS
(See page AC±12)
4. EVACUATE AIR FROM AIR CONDITIONING SYSTEM
5. CHARGE AIR CONDITIONING SYSTEM WITH
REFRIGERANT AND CHECK FOR GAS LEAKAGE
Specified amount: 600 ± 750 g (1.3 ± 1.7 Ib)
± AIR CONDITIONING SYSTEMRefrigerant LinesAC±42

THERMISTOR
(See page AC±40)
REMOVAL AND INSPECTION OF
THERMISTOR
1. DISCONNECT NEGATIVE CABLE FROM BATTERY
2. REMOVE GLOVE BOX AND UNDER COVER
3. CHECK THERMISTOR INSTALLED OPERATION
Using an ohmmeter, measure the resistance at the con-
nector.
Resistance: 1,500
at 25°C (77°F)
If resistance value is not as speci¿¿ed, replace the
thermistor.
4. REMOVE THERMISTOR
(a) Disconnect the connector.
(b) Remove the screw and thermistor from the cooling
unit.
5. CHECK THERMISTOR OPERATION
(a) Place the thermistor in cold water. While varying the
temperature of the water, measure the resistance at
the connector and at the same time, measure the tem-
perature of the water with a thermometer.
(b) Compare the two readings on the chart.
If the intersection is not between the two lines, replace the
thermistor.
INSTALLATION OF THERMISTOR
1. INSTALL THERMISTOR
(a) Install the thermistor with the screw.
(b) Connect the connector.
2. INSTALL GLOVE BOX AND UNDER COVER
3. CONNECT NEGATIVE CABLE TO BATTERY
± AIR CONDITIONING SYSTEMThermistorAC±43