2000 TOYOTA CAMRY turn signal

78 CHASSISÐBRAKES
ii) Pressure Holding Mode
When the fluid pressure in the wheel cylinder is increased or decreased to attain the required pressure, the ABS &
TRAC ECU sends a control signal to turn ON the pressure holding valve.
Then, the fluid pressure that is applied to the wheel cylinder is cut off to hold the fluid pressure in the wheel cylinder.

Hydraulic Circuit

Condition of Each Valve and Pump Motor
Part Name
Signal from
ABS & TRAC ECUOperation
Master Cut Solenoid ValveONPort BClosed
Reservoir Cut Solenoid ValveOFFPort HClosed
Pressure Holding ValveONPort CClosed
Pressure Reduction ValveOFFPort FClosed
PumpONRotating

79CHASSISÐBRAKES
iii) Pressure Reduction Mode
When the fluid pressure in the wheel cylinder needs to be decreased, the ABS & TRAC ECU sends a control signal
to turn the pressure reduction valve ON, causing port F to open
Accordingly, the brake fluid in the wheel cylinder flows to ports E and F, reservoir, and pump, to reduce the fluid
pressure in the wheel cylinder.
The fluid pressure reduction rate is controlled by repetition of the pressure reduction and holding mode.

Hydraulic Circuit

Condition of Each Valve and Pump Motor
Part Name
Signal from
ABS & TRAC ECUOperation
Master Cut Solenoid ValveONPort BClosed
Reservoir Cut Solenoid ValveOFFPort HClosed
Pressure Holding ValveONPort CClosed
Pressure Reduction ValveONPort FOpen
PumpONRotating

104BODY ELECTRICALÐAIR CONDITIONING
3. Defroster Nozzle
The front defroster nozzle inner wall is modified into a radial configuration for a smoother air flow and improved
defroster performance.
4. Air Conditioning Amplifier
On the new Camry, the air conditioning amplifier that is provided on the 1MZ±FE engine model is an individual
amplifier unit type and on the 5S±FE engine model is a type that is integrated with the ECM.
The air conditioning amplifier controls the air conditioning system in accordance with the signals received from
sensors, switches, etc.
Function
Details
Magnetic Clutch Relay Control
When the blower switch and the air conditioning switch are turned on to-
gether, or when the air outlet mode is switched to defroster, the magnetic
clutch relay turns on and activates the compressor.
When one of the following conditions is met while the compressor is
turned on, the magnetic clutch relay is turned off and stops the compres-
sor:
i) The air temperature immediately after passing through the evaporator
is detected to be below 3C (37.4F) by the thermistor.
ii) The compressor speed detected by the lock sensor is compared with
the engine speed signal, and the compressor's slip rate exceeds a pre-
determined level (compressor locked).
iii) ªAir conditioner cutº was requested by the ECM to maintain engine
performance or idling speed.
Compressor Delay ControlWhen the air conditioning switch is turned on, the engagement of the mag-
netic clutch is delayed.
Air Conditioning Indicator Light
Control
When the blower switch and the air conditioning switch are turned on to-
gether, or when the air outlet mode is switched to defroster, and the com-
pressor is activated, the indicator lamp of the air conditioning switch is
turned on.
If compressure lock occurs during compressor operation, the indicator
lamp flashes every 1 second.

105 BODY ELECTRICALÐACCESSORIES
ACCESSORIES

DESCRIPTION
The new Camry includes the accessory systems shown in the below.
System
Outline
Power Window System
The power window system includes one±touch auto down and key±off opera-
tion functions. The one±touch auto down function automatically opens the
driver 's door window fully. The key±off operation function makes it possible
to operate the power windows for approximately 45 seconds after the igni-
tion key is turned to the ACC or LOCK position, if the front doors are not
opened.
The basic construction and operation of this system are the same as in the
previous model.
Door Lock Control System
This system has a ªkey±linked lock and unlock functionº and a ªkey±confine
prevention functionº. All doors can be locked and unlocked simultaneously
by a key operation at the front right or left foor. (The key needs to be oper-
ated twice to unlock all the doors at the driver's door.) If the door lock opera-
tion is performed when one of the front doors is open and the ignition key is
inserted in the key cylinder, doors are unlocked automatically to prevent the
ignition key from being left inside the vehicle.
The basic construction and operation are the same as in the previous model.
Wireless Door Lock Remote Con-
trol System
A remote control system in which the lock and unlock functions of all doors
and panic alarm function can be controlled by the signals emitted from a
transmitter is adopted. The transmitter is also provided with a 2±step unlock
function to unlock all the doors by pressing the switch twice.
The basic construction and operation are the same as in the '96 Avalon.
However, certain functions have been changed. For details, see page 107.
Theft Deterrent System
When an attempt is made to forcibly enter the vehicle or open the hood or
trunk lid without a key, or when the battery terminals are removed and re-
connected, this system sounds the horn and flashes the headlights and tail-
lights for about 1 minute to alert the owner. At the same time, it locks all the
doors and electronically disconnects the starter.
The basic operation is the same as in the '96 Avalon.
Power Seat
As in the previous model, the front seats are power assisted by electric mo-
tors so that the seat positions can be adjusted easily by a simple switch op-
eration.
The basic construction and operation are the same as in the previous model.

117 BODY ELECTRICALÐACCESSORIES
2) Auto Cancel Function
When the vehicle is being driven under cruise control, if any of th econditions listed below is present, the vehicle speed
stored in membor is deleted, the control is lifetd, the current to the actuator is disrupted, and th power indicator ligh
is made to flash. The methods to reactivate the cruise control at that time, in accordance with that particular condition
(malfunction category A or B), are classified in the chart below.
Other auto cancel functions are basically the same as those of the previous model.
Condition
Malfunction CategoryHow to reactivate
Continuous current applied to the motor's accel-
eration output.
The motor did not move.
A
Turn off the ignition switch, and
turn it back on. Then turn on the
main switch.
Excessive current flowed to the motor or
magnetic clutch drive transistor.
Open circuit in magnetic clutch.
The vehicle speed signal is not sent for a
predetermined period of time (approx. 140 msec.)
The vehicle speed is equal to the set speed minus
approximately 16 km/h (10 mph) or below.
Short circuit in the control switch.
An open circuit malfunction of the ªdecreaseº
side of the motor (including open circuit in the
motor).
Abnormal vehicle speed signal.
BTurn the main switch back on.
3) Diagnosis Function
a. Wawrning Indication
The cruise control ECU immediately blinks the power indicator light in the combination meter on and off repeatedly
to alert the driver of a system malfunction.
When the power indicator light is flashing, and the cruise control is released by pressing on the main switch, the power
indicator light will be turned off. When the main switch is turned back on, the power indicator light blinking pattern
as shown on the next page outputs according to the malfunction categories A or B. When a category A malfunction
is occuring, the power indicator ligh will flash again. This indicates that the system cannot operate. But if it is a
category B malfunction, the indicator light will remain on indicating that the system is operating.

Parts NameCode
Front Bumper CoverTSOP
Radiator Grille (Models Except USA & CANADA)ABS
Headlight (For USA & CANADA)PC/PP
Front Turn Signal LightPMMA/ASA
Front Fog Light (Models Except USA & CANADA)PC/PP
Side Turn Signal Light (Models Except USA & CANADA)SAN/AAS
Outer Rear View MirrorABS
Outside Handle (Front, Rear)PC/PBT
Front Fender Outside MouldingPVC
Door Outsider Moulding (Front, Rear)PVC
Quarter Panel Outside Moulding (Front, Rear) (For Europe)PVC
Front Fender Mudguard (For USA & CANADA)PP/PMMA
Front Fender Mudguard (Models Except USA & CANADA)PP/EPDM
Quarter Panel Mudguard (For USA & CANADA)PP/PMMA
Quarter Panel Mudguard (Models Except USA & CANADA)PP/EPDM
Rear Bumper Cover (For USA & CANADA)PUR
Rear Bumper Cover (Models Except USA & CANADA)TSOP
Rear Combination Light (For USA & CANADA) PMMA/ASA
PMMA/ABS/PC
Rear Combination Light (Models Except USA & CANADA)PMMA/ASA
Licence Plate LightPC
Back±up Light (Rear Light)PMMA/ASA
LOCATION OF PLASTIC BODY PARTS
HINT:

Resin material differs with model.
/ Made up of 2 or more kinds of materials.
PLASTIC BODY PARTSPP-4

CAMRY ± NEW FEATURES
150NF105 150NF104Inactive Activated Wire
PulleyDrum
Piston
Cylinder
15
SEAT BELT
1. General
The front seats are provided with an electrical sensing type seat belt pretensioner and a seat belt force limiter.
In the beginning of a collision, the seat belt pretensioner instantly pulls up the seat belt thus providing the
excellent belt's effectiveness in restraining the occupant.
When the impact of a collision causes the tension of the seat belt applied to the occupant to reach a predeter-
mined level, the force limiter restrains the tension, thus controlling the force applied to the occupant's chest
area.
In accordance with the ignition signal from the airbag sensor assembly, the seat belt pretensioner activates
simultaneously with the deployment of the
SRS airbags for the driver and front passenger.
2. Seat Belt Pretensioner
Construction and Operation
The seat belt pretensioner consists of the pretensioner mechanism and retracting mechanism.
The pretensioner mechanism consists of a gas generator, piston, wire, drum and etc.
If the airbag sensor is turned on by deceleration due to frontal collision, electric current then ignites the gas
generator located in the pretensioner. As a result, the gas generator emits gas in an extremely short time and
pushes the piston. Since the cable is attached to the piston, the piston will pull on the cable causing the drum
to grab onto the shaft. The shaft will then move in the retracting direction pulling up the belt for a predeter-
mined length.

CAMRY ± NEW FEATURES19
4. Construction and Operation
Side Airbag Sensor Assembly
1) Description
The side airbag sensor assembly is mounted on the right and left center pillars. It receives signals from
the side airbag sensor enclosed in the side airbag sensor assembly and judges whether the side airbag must
be activated or not.
2) Construction and Operation
The side airbag sensor assembly consists of side airbag sensor, safing sensor, etc.
a. Side Airbag Sensor
The side airbag sensor is enclosed in the side airbag sensor assembly based on the acceleration of the
vehicle that occurs during a side collision. The distortion created in the sensor is converted into an elec-
tric signal. This signal is a linear representation of the acceleration rate.
b. Safing Sensor
The safing sensor is enclosed in the side airbag sensor assembly. The sensor turns ON if an acceleration
force that is higher than a predetermined value is applied to the safing sensor as a result of a side colli-
sion.
Airbag Sensor Assembly
1) Description
The airbag sensor assembly is mounted on the center floor under the instrument panel.
When the airbag sensor assembly receives the airbag activation signal from the side airbag sensor assem-
bly, it applies current to the inflator.
Furthermore, the airbag sensor assembly diagnoses a system malfunction of the side airbag system.
This is the same airbag sensor assembly that is used for the
SRS airbag for the driver and front passenger.
2) Construction and Operation
The airbag sensor assembly consists of ignition control circuit, back up power source, diagnosis circuit,
memory circuit, etc.
a. Ignition Control Circuit
The ignition control circuit performs a prescribed calculation based on the signal output by the airbag
sensor and the front airbag sensor. If these calculated values are larger than a predetermined value, it
activates the ignition operation.
b. Back-Up Power Source
The back-up power source consists of a back-up capacitor and a DC-DC converter. In case of a power
system failure during a collision, the back-up capacitor discharges and supplies electric power to the
system. The DC-DC converter is a boosting transformer when the battery voltage drops below a certain
level.
c. Diagnosis Circuit
This circuit constantly diagnoses the system for any malfunction. When a malfunction is detected, it
lights up the
SRS warning light on the combination meter to alert the driver.
d. Memory Circuit
When a malfunction is detected by the diagnosis circuit, it is coded and stored in this memory circuit.