Page 1549 of 4770

AC21W±01
N20288
N20237
Water Hose
MarkingUpper
LH
Hose ClipRH Heater Radiator Pipe
45 ± 10°
Lower
I09160
± AIR CONDITIONINGAIR CONDITIONING UNIT
AC±27
2509 Author: Date:
REMOVAL
1. DISCHARGE REFRIGERANT FROM REFRIGERATION
SYSTEM
HINT:
At the time of installation, please refer to the following item.
Evacuate air from refrigeration system.
Charge system with refrigerant and inspect for leakage of refrig-
erant.
Specified amount: 800 ± 50 g (28.22 ± 1.76 oz.)
2. DRAIN ENGINE COOLANT FROM RADIATOR
HINT:
It is not necessary to drain out all the coolant.
3. DISCONNECT WATER HOSE FROM HEATER RADIA-
TOR PIPES
(a) Using pliers, grip the claws of the hose clip and slide the
hose clip along the hose.
(b) Disconnect the water hose.
HINT:
At the time of installation, please refer to the following items.
Push the water hose onto the heater radiator pipe as far
as ridge on the pipe and install the hose clip.
Install the hose clip in a position, as shown in the illustra-
tion.
4. REMOVE BLOWER UNIT (See page AC±35)
5. REMOVE INSTRUMENT PANEL AND REINFORCE-
MENT (See page BO±75)
6. DISCONNECT LIQUID AND SUCTION TUBES
(a) Using SST, remove the 2 piping clamps.
SST 09870±00015 (Suction tube)
09870±00025 (Liquid tube)
Page 1578 of 4770
AC21Z±01
N20692
I09156
I09155
I09154
AC±56
± AIR CONDITIONINGHEATER RADIATOR
2538 Author: Date:
HEATER RADIATOR
REMOVAL
1. DRAIN ENGINE COOLANT FROM RADIATOR
HINT:
It is not necessary to drain out all the coolant.
2. DISCONNECT WATER HOSES FROM A/C UNIT
(See page AC±27)
3. REMOVE NO. 1 LOWER INSTRUMENT PANEL
4. REMOVE LH INSTRUMENT LOWER PANEL
5. REMOVE HEATER RADIATOR
(a) Release the 3 claws and pull out the heater protector.
(b) Remove the 3 screws 3 plate.
(c) Remove the 2 screws and 2 clamps and disconnect the
2 heater radiator pipes.
(d) Remove the heater radiator.
Page 1596 of 4770

AC0N6±02
N20290
21
A AC±74
± AIR CONDITIONINGCONDENSER FAN
2556 Author: Date:
CONDENSER FAN
ON±VEHICLE INSPECTION
1. INSPECT CONDENSER FAN OPERATION
Inspect the fan operation, as shown in the chart below.
Test conditions:
Ignition switch ON
Blower speed control switch position ºHIº
A/C switch ON
ConditionFan operation (Fan speed)
Engine coolant temperature
83°C (181°F) or belowNot rotate
Engine coolant temperature
98°C (208°F) or aboveRotate
Refrigerant pressure is less than
1,520 kPa (15.5 kgf/cm2, 220 psi)Not rotate (Low Speed)
Refrigerant pressure is 1,520 kPa
(15.5 kgf/cm2, 220 psi) or aboveRotate (High Speed)
If operation is not as specified, proceed next inspection.
2. INSPECT CONDENSER FAN MOTOR OPERATION
(a) Disconnect the fan connector.
(b) Connect the battery and ammeter to the connector, as
shown in the illustation.
(c) Check that the fan rotates smoothly, and then check that
the reading on the ammeter.
Specified amperage: 10.1 ± 1.8 A at 20 °C (68 °F)
If operation is not as specified, replace the fan mo-
tor.
If operation is as specified, check the pressure
switch, cooling fan relays and engine coolant temp.
switch.
Page 1598 of 4770
AC0N8±02
AC±76
± AIR CONDITIONINGCONDENSER FAN
2558 Author: Date:
REMOVAL
1. 1MZ±FE engine models only:
DRAIN ENGINE COOLANT FROM RADIATOR
HINT:
It is not necessary to drain out all the coolant.
2. 1MZ±FE engine models only:
DISCONNECT UPPER RADIATOR HOSE
3. REMOVE CONDENSER FAN
(a) Disconnect the connector.
(b) Remove the 4 bolts and fan.
Page 1611 of 4770

Z13473
From back side:
± AIR CONDITIONINGAIR CONDITIONING AMPLIFIER
AC±89
2571 Author: Date:
(b) Connect the connector to amplifier and inspect wire har-
ness side connector from the back side, as shown in the
chart below.
Test conditions:
Running engine at idle speed
Blower speed switch HI
A/C switch ON
Temperature control lever Max Cool
Set on manifold gauge set
Tester connectionConditionSpecified condition
1 ± GroundMagnetic clutch is not engagedBelow 1.0 V
1 ± GroundMagnetic clutch is engagedNo voltage
7 ± GroundMagnetic clutch is not engagedBelow 1.0 V
7 ± GroundMagnetic clutch is engagedBattery positive voltage
2 ± GroundRefrigerant pressure 196 ± 1,340 kPaBattery positive voltage
2 ± GroundRefrigerant pressure
less than 196 or more than 3,140 kPaNo voltage
12 ± GroundRefrigerant pressure 196 ± 1,340 kPaBelow 1.0 V
12 ± GroundRefrigerant pressure
less than 196 or more than 3,140 kPaBattery positive voltage
12 ± GroundEngine coolant temp. 83°C (181°F) or belowBattery positive voltage
12 ± GroundEngine coolant temp. 93°C (199°F) or aboveBelow 1.0 V
If circuit is as specified, try replacing the amplifier with a new
one. If the circuit is not as specified, inspect the circuits con-
nected to other parts.
Page 1614 of 4770

AC227±01
P15233
5S±FE:
ECT Switch
P19584
1MZ±FE:No. 1 ECT Switch
No. 2 ECT Switch
P01924
P01924
AC±92
± AIR CONDITIONINGENGINE COOLANT TEMPERATURE (ECT) SWITCH
2574 Author: Date:
ENGINE COOLANT
TEMPERATURE (ECT) SWITCH
INSPECTION
1. DRAIN ENGINE COOLANT FROM RADIATOR
HINT:
It is not necessary to drain out all the coolant.
2. REMOVE ECT SWITCHES
(a) Disconnect the connector.
(b) Remove the ECT switch.
3. 5S±FE engine:
INSPECT ECT SWITCH CONTINUITY
(a) Using an ohmmeter, check that no continuity exists be-
tween the terminals when the coolant temperature is
above 93°C (199°F).
If continuity exists, replace the switch.
(b) Using an ohmmeter, check that continuity exists between
the terminals when the coolant temperature is below
83°C (181°F).
If no continuity exists, replace the switch.
4. 1MZ±FE engine:
INSPECT No. 1 SWITCH CONTINUITY
(a) Using an ohmmeter, check that no continuity exists be-
tween the terminals when the coolant temperature is
above 98°C (208°F).
If continuity exists, replace the switch.
(b) Using an ohmmeter, check that continuity exists between
the terminals when the coolant temperature is below
88°C (190°F).
If no continuity exists, replace the switch.
Page 1615 of 4770
P06722
P15233
5S± FE:
ECT Switch
P19584
1MZ±FE:
No. 1 ECT Switch
No. 2 ECT Switch
± AIR CONDITIONINGENGINE COOLANT TEMPERATURE (ECT) SWITCH
AC±93
2575 Author: Date:
5. 1MZ±FE engine:
INSPECT No. 2 SWITCH CONTINUITY
(a) Using an ohmmeter, check that no continuity exists be-
tween the terminal and switch body when the coolant
temperature is above 93°C (199°F).
If continuity exists, replace the switch.
(b) Using an ohmmeter, check that continuity exists between
the terminals when the coolant temperature is below
83°C (181°F).
If no continuity exists, replace the switch.
6. INSTALL ECT SWITCHES
(a) Install the ECT switch.
HINT:
Lubricate a new O±ring with soapy water and install the switch.
(b) Connect the connector.
Page 1621 of 4770

INTRODUCTIONGLOSSARY OF SAE AND TOYOTA TERMS ±
IN±6
GLOSSARY OF SAE AND TOYOTA TERMS
This glossary lists all SAE±J1930 terms and abbreviations used in this manual in compliance with SAE
recommendations, as well as their Toyota equivalents.
SAE
ABBREVIATIONSSAE TERMSTOYOTA TERMS
( )±±ABBREVIATIONS
A/CAir ConditioningAir Conditioner
ACLAir CleanerAir Cleaner
AIRSecondary Air InjectionAir Injection (AI)
APAccelerator Pedal±
B+Battery Positive Voltage+B, Battery Voltage
BAROBarometric Pressure±
CACCharge Air CoolerIntercooler
CARBCarburetorCarburetor
CFIContinuous Fuel Injection±
CKPCrankshaft PositionCrank Angle
CLClosed LoopClosed Loop
CMPCamshaft PositionCam Angle
CPPClutch Pedal Position±
CTOXContinuous Trap Oxidizer±
CTPClosed Throttle Position±
DFIDirect Fuel Injection (Diesel)Direct Injection (DI)
DIDistributor Ignition±
DLC1
DLC2
DLC3Data Link Connector 1
Data Link Connector 2
Data Link Connector 31: Check Connector
2: Toyota Diagnosis Communication Link (TDCL)
3: OBD@@@@@: [g 2] Diagnostic Connector
DTCDiagnostic Trouble CodeDiagnostic Code
DTMDiagnostic Test Mode±
ECLEngine Control Level±
ECMEngine Control ModuleEngine ECU (Electronic Control Unit)
ECTEngine Coolant TemperatureCoolant Temperature, Water Temperature (THW)
EEPROMElectrically Erasable Programmable Read Only
MemoryElectrically Erasable Programmable Read Only Memory
(EEPROM),
Erasable Programmable Read Only Memory(EPROM)
EFEEarly Fuel EvaporationCold Mixture Heater (CMH), Heat Control Valve (HCV)
EGRExhaust Gas RecirculationExhaust Gas Recirculation (EGR)
EIElectronic IgnitionToyota Distributorless Ignition (TDI)
EMEngine ModificationEngine Modification (EM)
EPROMErasable Programmable Read Only MemoryProgrammable Read Only Memory (PROM)
EVAPEvaporative EmissionEvaporative Emission Control (EVAP)
FCFan Control±
FEEPROMFlash Electrically Erasable Programmable
Read Only Memory±
FEPROMFlash Erasable Programmable Read Only Memory±
FFFlexible Fuel±
FPFuel PumpFuel Pump
GENGeneratorAlternator
GNDGroundGround (GND)
HO2SHeated Oxygen SensorHeated Oxygen Sensor (HO2S)
IN016±02