'04 PRIUS Body Electrical

Body Electrical Push Button Start System Smart Entry & Start System Multiplex Communication System Automatic Headlight Beam Level Control System Combination Meter Air Conditioning Multi Display SRS Airbag System Steering Pad Switch

Body Electrical Push Button Start System

• Power Switch– Start / stop switch control (general operation)

-A -K -W -Q

Insert the keyPush the

power switchPower mode is

switched

ACC

OFF

IG-ON

READY


• Power Switch– Start / stop switch control

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Power Mode

P Range Except P Range

Push power switch

Push power switch

(brake pedal depressed)

Push power switch

Push power switch

(brake pedal depressed)

OFF

ACC

IG-ON

READY

Change to P range automatically

: It can operate only when vehicle is stopped


• System Diagram

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Power Switch(Indicator, Illumination)

Stop Light Switch

Combination Meter

IG1 Relay

IG2 Relay

ACC Relay

Key Slot

Key Interlock Solenoid

Transponder Key Amplifier and Coil

Full Switch

Key

Smart ECU*

*: Optional Equipment

HV ECU

Power Source Control

ECU

Transponder Key ECU

Gateway ECU

BEAN

CAN

Parking Control ECUHalfway Switch


• System Operation (OFF ACC)

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Power Switch

Stop Light Switch

ACC Relay

Key Switch Signal

Indicator “Green”

ON

OFF


ECU

ON

ON

ID Code

ID code check resultTransponder Key ECU


Halfway Switch

Full Switch

Key Interlock Solenoid

BEA

N


• System Operation (ACC IG-ON)

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Power Switch

Stop Light Switch

ACC Relay

Key Switch Signal

Indicator “Amber”

ON

OFF


ECU

ON

ON

Transponder Key ECU


Halfway Switch

Full Switch

Key Interlock SolenoidIG1, 2 Relay

ONON

BEA

N


• System Operation (OFF READY)

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Power Switch

Stop Light Switch

ACC Relay

Key Switch Signal

Indicator “OFF”

ON

ON


ECU

ON

ON

ID code check resultTransponder Key ECU

HV ECU

IG1, 2 RelayON


Halfway Switch

Full Switch

Key Interlock SolenoidON

ID Code

Hybrid System Start Request,Ready Signal

Ready SignalGateway ECU

BEA

N

CAN


• System Operation (READY or IG-ON OFF)

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Power Switch

ACC Relay

Key

BEA

N

Switch Signal

Indicator “OFF”

OFF


ECU

ON

ON

Transponder Key ECU

HV ECU

Transmission Control ECU

IG1, 2 RelayOFF

Combination Meter

Vehicle Speed

CAN


Halfway Switch

Full Switch

Key Interlock SolenoidOFF

Gateway ECU

READY Signal

Ready Signal

P SignalP Signal

Shift Position Check


• Key– A mechanical key and transponder chip is

included in the key

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Transponder Key Chip

Mechanical Key

Wireless Door Lock Buttons


• Card Slot– Two contact switches detect key position– Transponder key amplifier and coil is included

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Halfway Switch

Full Switch

Cross SectionIllumination


• Card Slot– Key interlock solenoid is operated to hold the key

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*: When key is pulled out, power mode is changed to OFF automatically

Power Mode P Range Except P Range

OFF OFF -

ACC OFF * ON (Hold)

IG-ON ON (Hold) ON (Hold)

READY ON (Hold) ON (Hold)

Operation


• Power Switch– Indicator indicates power mode and system

malfunction

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Power Mode

OFF ACC IG-ON READYMalfunction in IG Relay

circuit

Indicator Condition

OFFON

(Green)ON

(Amber)OFF

Blink (Amber)


• Power Source Control ECU– Hold circuit is used to prevent power supply is

cut by IG1,2 relay circuit malfunction

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Power Source Control ECU

IG1 Relay

CPU

Hold

Hold Cancel

IG2 Relay

Hold Circuit

IG1 Relay Drive Circuit

IG2 Relay Drive Circuit

ON

Body Electrical Smart Entry & Start System

• General– This system is able to lock / unlock doors, or start

the hybrid system with just carrying the smart key

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Door Lock / Unlock Back Door OpenStart Hybrid System


• System Diagram (main components)

Smart Cancel Switch

Transponder Key ECU


ECU

Back Door Opener Switch

Back Door Lock Switch

Smart Warning Light

Outside Handle

Touch SensorLock Switch

Antenna

Outside Handle

Touch Sensor

Lock Switch

AntennaMeter ECU

Body ECU

Door Lock Motors

M

Smart ECU

Oscillator

Oscillator

Wireless Door Lock Receiver

Back Door Oscillator (inner)

Back Door Oscillator (outer)

Room OscillatorPower Switch

Stop Light Switch

Smart KeyB

EA

N

HV ECU

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• Smart Key (Key)– Receives the request signal from oscillator and

sends ID code signal to wireless door lock receiver

Oscillator


ID Code

Request

Smart KeySmart ECU

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• Oscillator– Sends request signal to smart key to detect

smart key

Detection Area

approx. 0.7 – 1.0 m (2.3 – 3.3 feet)

Room Oscillator


Door Oscillator

Back Door Oscillator (inner)

Back Door Oscillator (outer)

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• Door Outside Handle– Touch sensor, antenna, and lock switch are

adopted at front door outside handle

Lock Switch

Antenna with Touch Sensor

(Back of outside door handle)

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• Back Door– Lock switch is located on the back door

Lock Switch

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Opener Switch


• Operations– Smart unlock


Outside Handle

Touch Sensor

Antenna

MDoor Lock

Motors

Smart ECU

Smart Key

Body ECU

Serial Communicatio

n

Smart Key enters in detection area

Check ID code

Unlock standby

Door unlocks

Touch the touch sensor

Each Door

Oscillator

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• Operations– Smart lock

Check SmartKey Location

(Outside of Vehicle)

Door Lock

Check ID code

Press Lock SwitchWireless Door Lock Receiver

Antenna

MDoor Lock

Motors

Smart Key

Body ECU

Serial Communicatio

n

Oscillators (outer)

Courtesy Switches(each door)

BEAN

AntennaOscillators

(inner)

Lock SwitchSmart ECU

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• Operations– Smart back door unlock

Smart Key

Form a smart key detection area

Back door open

Check ID code

Press back door opener switch

MBack Door

Opener Motor

Back Door Opener Switch

AntennaBack Door Oscillator (outer)


Smart ECU

Body ECU

Serial Communicatio

n

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• Operations– Smart ignition

Press the power Switch(with depress brake pedal)

Hybrid system “READY”

ACC, IG1/2 Relays ON


Antenna

Smart Key

Oscillators (inner)

Smart ECU

BEA

N

ACC Relay

IG1 Relay

IG2 Relay

Power Switch

Stop Light

Switch

HV ECU

Transponder Key ECU


Check ID code

Immobiliser Canceled

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• Functions

Warning FunctionSmart Unlock Mode

Selector Function (-A, -K)

Power Saving Function

Parked for a long timeDeactivateActivate

IG-ON

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• Functions– Warning function

Buzzer Warning Light

and / or

ACC IG-ON READY

Low capacity

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• Functions– Smart unlock mode selector function (-A, -K only)

Press for 5 sec.

Smart unlock mode can be switched

Individual Door

All Door

-A -K

Driver’s Door

Deactivate

14 Days

10 Minutes


• Functions– Power saving function

Activate

[Deactivation]

•No response morethan 14 days

•No operation more than 10 minutes in detection area

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Deactivate

14 Days

Activate

10 Minutes


• Functions– Power saving function

[Re-activation]

•Push lock / unlock switch on remote control key

•Lock operation by lock switch

•Key operation with mechanical key

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• Inoperative Conditions– The smart function will not operate on the

following conditions

Smart cancel switch ON

Smart key is inserted No battery

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Body Electrical Multiplex Communication System

• Communications

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Power Window Master Switch

J/C

HV ECU

Yaw Rate Sensor

(G Sensor)

Battery ECU (LHD)

EPS ECU

Steering Angle Sensor

Brake ECU

Engine ECU (ECM) (LHD)

Battery ECU (RHD)

J/C

Engine ECU (ECM) (RHD)

DLC3

Transponder Key ECU

Meter ECU


A/C ECU

Security ECU

Parking Lock ECU

Smart ECU

Body ECU

Multi DisplayNavigation ECU

Audio Head Unit

Audio Amplifier

Gateway ECU

:BEAN :CAN :AVC-LAN :Local Communication

Body Electrical Automatic Headlight Beam Level Control System

• System Diagram

-A

Combination Meter

Vehicle Speed Signal

Headlight Leveling Actuators

Rear Height Control

Sensor (LH)

Automatic Headlight Leveling System Warning Light

Headlight Beam Level

Headlight Beam Level Control ECU Master Warning Light

Multi Display

Body Electrical Combination Meter

• General

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Oil Replacement Reminder Light

(-A only)

Low Ambient Temperature Warning Light

Master Warning

Light

A/C Indicator Lights

Shift Position Indicator Light

EV Mode Indicator Light Smart Warning

Light

ECB Warning

Light

Body Electrical Combination Meter

• Low Ambient Temperature Warning Light– The low ambient temperature warning light

indicated the ambient temperature drops

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Low Ambient Temperature Warning Light Ambient Temp. (°C (°F))

ON

OFF

5(41)

3 (37.4)

Body Electrical Air Conditioning

• General– Electric inverter compressor is adopted

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Sub-cool Condenser

Engine

Straight Flow Aluminum Heater Core

RS Evaporator

Scroll Type ES18 Electric Inverter

Compressor


• Electric Inverter Compressor – Scroll type ES18 electric inverter compressor is

adopted

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Scroll Type Compressor

Brushless MotorMotor Shaft

High Voltage Wire Harness

ES18 Electric Inverter Compressor


• Electric Inverter Compressor – A/C inverter is adopted to regulate compressor

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Electric Inverter Compressor

Various Sensors and

Switches

Evaporator Temp. Sensor

HV Battery (DC 201.6 V)

A/C ECU

Target Evaporator

Temp.

Target Compressor

Speed

A/C Inverter(DC AC)

AC

DC

HV ECU


• Blower Pulse Controller– Blower motor speed is controlled by duty signal

from blower pulse controller

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A/C ECU

Blower Motor

Duty Signal

Blower Pulse

ControllerM

Duty Signal

Input Duty Ratio(from A/C ECU)

Output Voltage

(Average)

30 95

4

13

(%)

(V)

Blower Pulse Controller


• Humidity Sensor (included Room Temp. Sensor)– Humidity sensor is adopted to optimize the

dehumidifying

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Output Voltage

(V)

Humidity (%)Humidity Sensor

Output Characteristics

Electrode

Humidity-sensing

Resistance Film


• System Control– To control A/C system, operate the multi display

or steering pad switch

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Air conditioning Screen Display

AVC-LAN

Gateway ECU

BEAN

Steering Pad Switch

Combination Meter

A/C ECU Meter ECU

Body Electrical Multi Display

• General– 7.0 inch LCD screen with pressure sensitive

touch panel display

-A -K -W -Q


• General

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Energy Monitor Display

Air Conditioning Screen Display

Navigation Display

Hands Free Display


• General

-A -K -W -Q

Warning Display Warning Message


• Warning Display– Warning marks

-A -K -W -Q

Automatic Headlight

Leveling System Warning

Oil Pressure Warning

High Engine Coolant

Temperature Warning

Hybrid System

Abnormal

HV Battery Warning

Discharge Warning

EPS Warning


• Warning Messages

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Body Electrical SRS Airbag System

• Features

-A -K -W -Q

Dual stage SRS air bag for front seatsElectrical type front

airbag sensor

Electrical connection check mechanism is

discontinued

for front and rear seat

No-contact type seat belt buckle switch for driver

Airbag door is invisible

LHD ModelSeat Position

Sensor


• Seat Position Sensor– Seat position sensor is changed from

conventional type

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Seat Position Sensor


• Seat Position Sensor– Construction

Uses hall IC and magnet

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Hall ICMagnets

A – A Cross-sectionLower RailUpper Rail

AA

AA

Confidential


• Seat Position Sensor– Position detection

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Seat Position: Front Seat Position: Rear

Lower Rail


• Seat Belt Buckle Switch (for Driver)– A no-contact type seat belt buckle switch is used

for SRS airbag system

Seat Belt Buckle Switch

Magnets

Hall IC

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Airbag Sensor

Assembly


• Seat Belt Buckle Switch (for Driver)– A no-contact type seat belt buckle switch is used

for SRS airbag system

Magnets

Hall IC

Airbag Sensor

Assembly

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ON

Body Electrical Steering Pad Switch

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A/C controlA/C control

Navigation control etc.

Audio control

'04 PRIUS Body Electrical

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