2000 TOYOTA CAMRY heater

19
INTERIOR
INSTRUMENT PANEL, SWITCH LAYOUT AND EQUIPMENT
While maintaining continuity with the door trims and the console, the instrument panel provides a form with a
lowered center of gravity to emphasize a sense of freedom.
The unique, compact meter hood expresses a sense of sportiness.
The frequently used audio system has been located above the heater control panel, thus improving its ease of use.

37 ENGINEÐ5S±FE ENGINE
 ENGINE CONTROL SYSTEM
1. General
The engine control system of the new 5S±FE engine is basically the same in construction and operation as that of the
previous 5S±FE engine, except fo rthe changed listed bleow.
The exhaust emissions has been reduced through the adoption of the sequential multiport fuel injection system for
engine starting and the air±fuel ratio sensor*
2
The function of an air conditioning amplifier has been internally added to the ECM.
The engine control system of the new 5S±FE engine and previous 5S±FE engine and previous 5S±FE engine are
compared below.
System
OutlineNewPrevious
SFI
(SequentialA D±type SFI system is used, which indirectly detects
intake air volume by manifold absolute pressure.(q
Multiport Fuel
Injection)The fuel injection system is a sequential multiport fuel
injection system.
ESA
(Electronic SparkIgnition Timing is determined by the ECM based on
signals from various sensors. The ECM corrects ignition
timing in response to engine knocking.

(Electronic Spark
Advance)Torque control correction during gear shifting has been
used to minimize the shift shock.*1*1
IACA rotary solenoid type IAC valve controls the fast idle(Idle Air Control)
A rotary solenoid type IAC valve controls the fast idle
and idle speeds.
Fuel Pump
ControlFuel pump operation is controlled by signal from the
ECM.
Oxygen Sensor
(Air Fuel Ratio
Sensor*
2)
Heater Control
Maintains the temperature of the oxygen sensor (or air
fuel ratio sensor*2) at an approppiate level to increase
accuracy of detection of the oxygen concentration in the
exhaust gas.Ð
EGR Cut±Off
ControlCuts off EGR according to the engine condition to
maintain drivability of the vehicle and durability of
EGR components.

Evaporative
Emission ControlThe ECM controls the purge flow of evaporative emis-
sions (HC) in the charcoal canister in accordance with
engine conditions.
*1*1
Air Conditioning
Cut±Off ControlBy turning the air conditioning compressor ON or
OFF in accordance with the engine condition,
drivability is maintained
*3
Diagnosis
When the ECM detects a malfunction, the ECM diagnoses
and memorized the failed section.
DiagnosisThe diagnosis system includes a function that detects a
malfunction in the evaporative control system.*1*1
Fail SafeWhen the ECM detects a malfunction, the ECM stops
or controls the engine according to the data already stored
in memory

*1: Only for Automatic Transaxle Models., *2: Only for California Specification Models,
*
3: The air conditioning magnet scutch controled by the ECM.

48ENGINEÐ1MZ±FE ENGINE

ENGINE CONTROL SYSTEM
1. General
The engine control system of the new 1MZ±FE engine is basically the same in construction and operation as that of
the previous 1MZ±FE engine. However, the fuel pressure control has been discontinued and the EGR control system
has been changed.
The engine control system of the new 1MZ±FE engine and previous 1MZ±FE engine are compared below.
System
OutlineNewPrevious
SFI
(SequentialA L±type SFI system directly detects intake air mass with
a hot wire type mass air flow meter.(q
Multiport Fuel
Injection)The fuel injection system is a sequential multiport fuel
injection system.
ESA
Ignition Timing is determined by the ECM based on
signals from various sensors. The ECM corrects ignition
timing in response to engine knocking.

(Electronic Spark2 knock sensors are used to improve knock detection.(p
Advance)In vehicles equipped with automatic transaxle, torque
control correction during gear shifting has been used to
minimize the shift shock.

IACA rotary solenoid type IAC valve controls the fast idle(Idle Air Control)
A rotary solenoid type IAC valve controls the fast idle
and idle speeds.
ACIS
(Acoustic Control
The intake air passages are switched according to the en-
gine speed and throttle valve angle to increase perfor(Acoustic Control
Induction System)
gine speed and throttle valve angle to increase perfor-
mance in all speed ranges.
Fuel Pressure
ControlIn hot engine conditions, the fuel pressure is increased to
improve restartability.
Oxygen Sensor
Heater ControlMaintains the temperature of the oxygen sensor at an
approppiate level to increase accuracy of detection of
the oxygen concentration in the exhaust gas.

EGR Cut±Off
ControlCuts off EGR according to the engine condition to
maintain drivability of the vehicle and durability of
EGR components.
Ð
EGR Control
Uses the duty control type VSV and EGR valve position
sensor, controlling the EGR volumne in accordance with
engine conditions.
Ð
Evaporative
Emission ControlThe ECM controls the purge flow of evaporative emis-
sions (HC) in the charcoal canister in accordance with
engine conditions.

Diagnosis
When the ECM detects a malfunction, the ECM diagnoses
and memorizes the failed section.
DiagnosisThe diagnosis system includes a function that detects a
malfunction in the evaporative control system.Ð
Fail SafeWhen the ECM detects a malfunction, the ECM stops
or controls the engine according to the data already stored
in memory


101 BODY ELECTRICALÐAIR CONDITIONING
AIR CONDITIONING
 DESCRIPTION
1. General
The air conditioning system in the new Camry has the following features:
The rotary switch and lever type heater control panel is used.
As in the previous model, an air conditioning unit that incorporates a blower, heater and cooler unit, has been
adopted.
The duct size of the blower unit has been enlarged.
An aluminum heater core has been adopted on all models.
The defroster nozzle inner wall is modified into a radial configuration for smoother air flow.
A defroster±linked air conditioning start up control, which automatically engages the air conditioning when the
defroster mode has been selected, is provided.
The air conditioning amplifier which is integrated with the ECM has been adopted on the 5S±FE engine model.

Performance
Model
NewPreviousItemNewPrevious
Heat Output W (Kcal/H)5580 (4800)u
HeaterAir Flow Volume* m3/h360u
Power Consumption W220u
Ai
Heat Output W (Kcal/H)5300 (4560)5350 (4600)
Air
ConditionerAir Flow Volume m3/h520530Conditioner
Power Consumption W260u
DefrosterAir Flow Volume* m3/h360u
*: With side vent closed.

Specifications
Model
NewPreviousItemNewPrevious
aterTypeDimpled Tube Typeu
and Hea
t
Heater CoreSize WxHxL mm (in.)160 x 220 x 32
(6.3 x 8.7 x 1.3)u
ion a
n
Fin Pitch mm (in.)1.8 (0.07)u
ntilati
o
Blower
Motor TypeA80Fs13TS80Fs12.5T
Ve n
tBlowerFan Size Dia. xH mm (in.)150 x 75 (5.9 x 3.0)u
Type3 Passage Flow Typeu
g
CondenserSize WxHxL mm (in.)415.6 x 726 x 22
(16.4 x 28.6 x 0.9)435.2 x 686 x 22
(17.1 x 27.0 x 0.9)
ingFin Pitch mm (in.)4.5 (0.18)3.5 (0.14)
ioni
n
TypeDrawn Cup Typeu
onditi
o
EvaporatorSize WxHxL mm (in.)260 x 252 x 90
(10.2 x 9.9 x 3.5)u
r C
oFin Pitch mm (in.)4.0 (0.16)u
Air CompressorType10PA17CuARefrigerandTypeHFC134a (R134a)u

103 BODY ELECTRICALÐAIR CONDITIONING
 CONSTRUCTION AND OPERATION
1. Heater Control Panel
As in the previous model, the rotary switch and lever type heater control panel has been adopted.
The new model uses a larger rotary switch to realize excellent control.
2. Air Conditioning Unit
As in the previous model, the air conditioning unit incorporates a blower, heater and cooler units. This provides high
rigidity and lower ventilating resistance.
Blower Unit
The duct size of the blower unit has been enlarged to reduce ventilating resistance.

106BODY ELECTRICALÐACCESSORIES
SystemOutline
SRS Airbag
The SRS (Supplemental Restraint System) airbag is provided for the driver
and front passenger. The SRS airbag has been designed to lessen the shock to
the head and chest of the driver and front passenger in the event of a frontal
impact collision as a supplement to the seat belt.
A 1±sensor type airbag system is used in which the detection of decelera-
tion during a collision as well as control of the airbag system is accom-
plished by the airbag sensor assembly.
The basic construction and operation are the same as in the '96 Avalon.
However, the inflator for front passsenger and airbag sensor assembly have
been changed.
For details, see page 111.
Cruise Control System
Once it has been set at a desired vehicle speed, this system automatically
adjusts the engine throttle position to maintain the vehicle speed at the de-
sired speed without operating the acceleration pedal.
The basic construction and operation are the same as in the previous model.
However, in the new model, a new type acutator has been adopted. Also, the
functions of the cruise control ECU has been changed. For details, see page
116.
Moon Roof
The moon roof is a tilt±up and sliding type the same as in the previous mod-
el. This system includes ªkey±off operationº, which is the same as with the
power window system. The new model offers an additional ªone±touch slide
openº function which enables the moon roof to fully open when the slide
switch is pressed toward the opening side for a few seconds.
Electrical Remote Control Mirror
The electrical remote control mirrors used in the previous model are also
used in the new model. Also, the internal heater to remove water drops from
the mirror surface is provided.
Key Reminder System
When the driver's door is opened with the ignition key in the ACC or LOCK
position, this system sounds a buzzer to warn the driver that the ignition key
has not been removed.
The basic construction and operation are the same as in the previous model.

CAMRY ± NEW FEATURES
No.2 INJECTOR
SENSORS ACTUATORS
VG
RSO IGF NE
ECM
IGTI

IGT3
#10
G22
THW
THA
VTA1
STA
SPD
AFR
AFL
OXS
EGLS
THG
KNKR
CF
NSW
A/C
ACIS
FC
ACT
MAFR
HAFL
HREL
#20
#30
#40
#50
#60
MASS AIR FLOW METER
R, 2, L KNKLIGSW
RSC
CRANKSHAFT POSITION SENSOR
Engine Speed Signal
Crankshaft Angle Signal
CAMSHAFT POSITION SENSOR
Crankshaft Angle Signal
ENGINE COOLANT TEMP.
SENSOR
INTAKE AIR TEMP. SENSOR
THROTTLE POSITION SENSOR
Throttle Position Signal
IGNITION SWITCH
Starting Signal
Ignition Signal
VEHICLE SPEED SENSOR
COMBINATION METER
AIR-FUEL RATIO SENSOR
(Bank 1, Sensor 1)
AIR-FUEL RATIO SENSOR
(Bank 2, Sensor 1)
HEATED OXYGEN SENSOR
(Bank 1, Sensor 2)
EGR VALVE POSITION SENSOR
EGR GAS TEMP. SENSOR
KNOCK SENSORS
PARK / NEUTRAL POSITION
SWITCH
Neutral Start Signal
AIR CONDITIONING AMPLIFIER
A / C Switch Signal
COOLING FAN RELAYNo.1 INJECTOR
No.3 INJECTOR
No.4 INJECTOR
No.5 INJECTOR
No.6 INJECTOR
ESA
IGNITER
IGNITION COILS
SPARK PLUGS
IAC
CONTROL VALVE
ACIS
VSV
FUEL PUMP CONTROL
CIRCUIT OPENING RELAY
AIR CONDITIONING CONTROL
AIR CONDITIONING
AMPLIFIER
AIR FUEL RATIO SENSOR
HEATER CONTROL
AIR FUEL RATIO SENSOR
HEATER RELAY
AIR FUEL RATIO SENSOR
HEATER (Bank 1, Sensor 1)
AIR FUEL RATIO SENSOR
HEATER (Bank 1, Sensor 2)SFI
(Continued)
KNOCK SENSORS
11
Construction
1) California Specification Automatic Transaxle Model
The configuration of the engine control system in the 1MZ-FE engine of the '98 Camry is as shown in
the following chart. Shaded portions
differ from the 1MZ-FE engine of the '97 Camry.

CAMRY ± NEW FEATURES
BATT
BATTERY
PS
IMLD
EGR
EVP1
TPC
W
ELS
STP
PTNK
TRC
TXCT
KSW
TC
SIL
EFI MAIN RELAY
+B
EFI ELS2 POWER STEERING OIL
PRESSURE SWITCH
TAILLIGHT & REAR WINDOW
DEFOGGER
STOP LIGHT SWITCH
VAPOR PRESSURE SENSOR
ABS & TRAC ECU*
1
TRANSPONDER KEY
AMPLIFIER*2
UNLOCK WARNING SWITCH*2
DATALINK CONNECTOR 1
DATALINK CONNECTOR 3EGR CONTROL
VSV
EVAP CONTROL
VSV
VAPOR PRESSURE CONTROL
VSV
THEFT DETERRENT INDICATOR
LIGHT*2
MALFUNCTION INDICATOR
LAMP
HTSOXYGEN SENSOR HEATER
CONTROL
HEATED OXYGEN SENSOR
HEATER (Bank 1, Sensor 2)
RXCK
CODE
12
*1: Applicable only to vehicles equipped with the TRAC System.
*
2: Applicable only to vehicles equipped with the Engine Immobiliser System.