2001 TOYOTA PRIUS brake sensor

L PART NUMBER OF CONNECTORS
Code Part Name Part NumberCodePart Name Part Number
Note : Not all of the above part numbers of the connector are established for the supply.
2001 PRIUS (EWD414U) L 2
License Plate Light LH90980±11148L 3License Plate Light RH90980±11148
L 4Luggage Compartment Door Unlock SW90980±11212
L 5Luggage Compartment Light90980±11148
L 6Luggage Compartment Light SW90980±11097
M 1Mass Air Flow Meter90980±11317
M 2Motor Generator No.190980±11658
M 3Motor Generator No.290980±11034
M 4Motor Generator No.290980±11143
M 5Multi Display90980±11911
M 6Multi Display90980±11923
M 7Multi Display90980±10799
N 1Noise Filter (Ignition)90980±10843
N 2Navigation ECU90980±11973
N 3Navigation ECU90980±11923
N 4Noise Filter (Rear Window Defogger)90980±11259
O 1Oil Pressure SW90980±11363
P 1Park/Neutral Position SW90980±11535
P 2Parking Brake SW90980±11147
P 3PTC Heater90980±10903
P 4PTC Heater90980±10867
P 5Personal Light90980±11212
P 6Power Window Control SW Front RH
P 7Power Window Control SW Rear LH90980±10797
P 8Power Window Control SW Rear RH
P 9Power Window Master SW90980±11469
P10Power Window Motor Front LH90980±11011
P11Power Window Motor Front RH
P12Power Window Motor Rear LH90980±10860
P13Power Window Motor Rear RH
P14Pretensioner LH90980±11884
P15Pretensioner RH90980±11862
R 1Radiator Fan Motor90980±11237
R 2Radio and Player90980±10996
R 3Radio and Player90980±10997
R 4Radio and Player90980±10903
R 5Remote Control Mirror SW90980±11657
R 6Rear Combination Light LH90980±11011R 7Rear Combination Light RH90980±11011
R 8Rear Speaker LH90980±10935R 9Rear Speaker RH90980±10935
R10Remote Control Mirror LH90980±11587R11Remote Control Mirror RH90980±11587
S 1Steering Shaft Torque Sensor90980±10942
S 2Shift Lock ECU90980±11488
S 3Stop Light SW90980±11118
S 4Side Airbag Sensor LH90980±11857S 5Side Airbag Sensor RH90980±11 857
S 6Side Airbag Squib LH90980±11864S 7Side Airbag Squib RH90980±11864
S 8System Main Relay90980±11529
S 9System Main Relay82675±36050S10System Main Relay82675±36050
S11System Main Relay±S12System Main Relay±
T 1Theft Deterrent Horn90980±10619
T 2Throttle Control Motor90980±11162
T 3Throttle Position Sensor90980±10711
T 4Transponder Key Computer90980±11475
T 5Turn Signal Flasher Relay90980±10799
T 6Tension Reducer Solenoid90980±11918
U 1Unlock Warning SW and Key Interlock
Solenoid90980±10795
V 1Vacuum Sensor (HC Adsorber and Catalyst
System)90980±10845
V 2VSV (EVAP)90980±11156
V 3VSV (HC Adsorber and Catalyst System)90980±11149
V 4Vapor Pressure Sensor90980±11143
V 5VSV (Canister Closed Valve)90980±11156
V 6VSV (Parge Flow Switching Valve)90980±11859
W 1Washer Motor90980±10981
W 2Water Pump Motor (A/C)90980±10887
W 3Water Pump Motor (Inverter)90980±11003
W 4Water Temp. SW90980±11235
W 5Wireless Door Control Receiver90980±11909

2001 PRIUS (EWD414U)
M OVERALL ELECTRICAL WIRING DIAGRAM
9
1011 12
19 PRIUS (
Cont' d)
9A 5A 1A
10 A 22 A 23 A 12 A12A8A4A
16 C 25 C 24 C 15 C11A7A3A
9C 28C 27C 18C10A6A2A
5D 13D 20D 19D 3B 10B 4B 1B
To Data Link
Connector 3
<2±5><2±6> Fr om Stop Light SW
<3±4>
24 B 16 B 14 B 22 B15 B 23 B
To Hybr id
Vehicle
Contr ol ECU
< 1±19> < 1±20> To EMPS ECU
< 20±4>
B16A15A 14A13A 19B20B 11B12B24 A21 B
1IB1 2IB1 5IB1
ABS
J10
JUNCTION
CONNECTOR
W±BB10 B11,
BRAKE ECUAB B13, D C , B12B 3 , C B 1 B 2,
BRAKE ACTUATORAB
B WRB WRB WRB WRP±B W± L GR± GG± W
LGVG RR G BRP
W±B L PL
PL Y BR
BR±BB W
(
Shielded) (
Shielded)
(
Shielded) (
Shielded) (
Shielded) (
Shielded)
(
Shielded) (
Shielded)(
Shielded) (
Shielded)
HVI + HVI ± HV O+ HVO± FL+ FL± FSS FR+ FR± RL+ RL ± RS S RR+ RR± RRO RLO VCM PMC E2 SG1 VREG PREG EREG SG2 VFR PFR EFR SG3 VRR PRR ERR SG4 TC D/ G TS STP
(
Shielded)
AA
A
221112
A 4
ABS SPEED
SENSOR FRONT LHA 5
ABS SPEED
SENSOR FRONT RHA23
ABS SPEED
SENSOR REAR L H12
A2 4
ABS SPEED
SENSOR REAR RH (
Shielded) A
W±B B± Y
W± B20 C
BZ6B
IG1
G
13 IA2
G1 2B±Y
DA
EB EB
B±Y
B±Y
J14 J15,
J UNCTI ON
CONNECTORAB
B14
BRAKE
WARNING BUZZERBUZZER

THS (TOYOTA HYBRID SYSTEM)
182TH19
EngineECMHV ECU
Shift Position Sensor
Brake ECU
HV Battery
Accelerator Pedal Position Sensor
Hybrid Transaxle Inverter with Converter
Battery ECU
SMR (System Main Relay)
Service Plug23

FEATURES OF THS
This system controls the following modes in order to achieve the most efficient operations to match the driv-
ing conditions:
1. Supply of electrical power from the HV battery to MG2 provides force to drive the wheels
2. While the tires are driven by the engine via the planetary gears, MG1 is driven via the planetary gears to
supply electricity to MG2 to drive the wheels
3. When the vehicle is decelerating, kinetic energy from the wheels is recovered and converted into electrical
energy and used to recharge the HV battery by means of MG2.
The HV ECU switches between these modes (1, 2, 1 + 2, or 3) according to the driving conditions. However,
when the SOC of the HV battery is low, the HV battery is charged by the engine by turning MG1.
As a result, it achieves far greater the fuel economy compared to conventional gasoline engine vehicles, at
a reduced level of exhaust gas emissions. Furthermore, this revolutionary powertrain has eliminated the
constraints that are associated with electric vehicles (such as their short cruising range or their reliance on
external recharging units).

LAYOUT OF MAIN COMPONENTS

THS (TOYOTA HYBRID SYSTEM) 24

MAIN FUNCTIONS OF COMPONENTS
MG1Generates high-voltage electricity by being powered primarily by the engine.
Also functions as a starter to start the engine.
Hybrid
Trans-
axle
MG2
Primarily provide additional power to the engine in order to increase the
overall drive force. During braking, or when the accelerator pedal is not
depressed, it generates electricity to recharge the HV battery (Regenerative
brake system).
Planetary
Gear UnitDistributes the engine's drive force as appropriate to directly drive the vehicle
as well as the generator.
HV Battery
Supplies electric power to the MG2 during start-off, acceleration, and uphill
driving; recharged during braking or when the accelerator pedal is not
depressed.
InverterA device that converts the high-voltage DC (HV battery) into AC (MG1 and
MG2) and vice versa (Converts AC into DC).
Converter
Drops the high-voltage direct current (DC 273.6 V) into DC12 V in order to
supply electricity to body electrical components, as well as to recharge the
auxiliary battery (12 V).
HV (Hybrid Vehicle
Control) ECU
Information from each sensor as well as from the ECU (ECM, Battery ECU,
ABS ECU) is received, and based on this the required torque and output power
is calculated.
The HV ECU sends the calculated result to the actuators and controllers.
ECMSends a throttle open command to the electronically-controlled throttle in
accordance with the engine output request factor received from the HV ECU.
Battery ECUMonitors the charging condition of the HV battery.
Brake ECU
Controls the regenerative brake that is effected by the MG2 and the hydraulic
brake so that the total braking force equals that of a conventional vehicle that
is equipped only with hydraulic brakes.
Also, the brake ECU performs the ABS control conventionally.
Accelerator PedalConverts the accelerator angle into an electrical signal and outputs it to the HVAccelerator Pedal
Position Sensor
Converts the accelerator angle into an electrical signal and outputs it to the HV
ECU.
Shift Position SensorConverts the shift lever position into an electrical signal and outputs it to the
HV ECU.
SMR (System Main
Relay)Connects and disconnects the high-voltage power circuit through the use of
a signal from the HV ECU.
Service plugShuts off the high-voltage circuit of the HV battery when this plug is removed
for vehicle inspection or maintenance.

THS (TOYOTA HYBRID SYSTEM)
Shift Position
Sensor
182TH05
Accelerator
Pedal Position
Sensor
BRAKE
ECU
Shift Position
(Main and Sub)
Accelerator Angle
(Main and Sub)
Regenerative
Request FactorHV ECUInverter
Voltage
SMR Control
MG2MG1
RPMEngine
Power
RequestCharging
Condition,
Amperage
SMRSMR
Amperage
HV
Battery Engine
Planetary Gear
Unit
Wheel
Wheel
ECM
Battery
ECU
Hydraulic
Brake
Actual
Regenerative
Braking Factor
Auxiliary
Battery
Mechanical Power Path
Electrical Signal Hydraulic
Converter
25

SYSTEM DIAGRAM

THS (TOYOTA HYBRID SYSTEM)27
THS CONTROL SYSTEM
1. General
The THS control system contains the following components:
HV (Hybrid Vehicle
Control) ECU
Controls the MG1, 2 and the engine according to the demand torque,
regenerative brake control and the SOC (state of charge) of HV battery. These
factors are determined by the shift position, the degree which the accelerator
is depressed, and vehicle speed.
ECM
ControlThe HV ECU receives engine status data (rpm, torque) from the ECM and
determines the engine demand torque.
Moreover, engine stop and fuel cut signals are sent according to the driving
conditions.
In addition, the vehicle speed signal received from the combination meter is
also sent.
BRAKE
ECU
ControlThe HV ECU receives data corresponding to the total braking force needed.
The HV ECU transmits the regeneration brake demand torque valve, as well
as the regeneration brake execution torque valve.
Inverter
(for MG1,
MG2)
ControlThe HV ECU sends the signal to the power transistor in the inverter for
switching the U, V, W, phase of the MG1, 2 in order to drive the MG1 and 2.
Moreover, if an overheating, overcurrent or fault voltage signal is received
from the inverter, it is shut down.
ConverterWhen a malfunction is in the Hybrid vehicle control system, the HV ECU
sends a signal to the converter, and the converter is stopped.
MG1, MG2Detects the position of the rotor of the MG1, 2 and controls the current flowing
to the MG1, 2.
In addition, the temperature is detected and the maximum load is controlled.
Battery ECUReceives the SOC of the HV battery and the current value.
Airbag Sensor
AssemblyReceives the airbag deployment signal.
A / C ECUReceives the engine power rise demand (when air-conditioning is turned ON)
and the engine running demand for water-temperature maintenance.
Accelerator Pedal
Position SensorReceives the value corresponding to degree at which the accelerator pedal is
depressed.
Shift Position SensorReceives the shift position signal (P, R, N, D, B).
Cruise Control SwitchReceives the cruise control switch signal.
Stop Light SwitchReceives the brake signal.
Interlock Switch
(for Inverter Cover and
Service Plug)Verifies that the cover of both the inverter and the service plug have been
installed.
Circuit Breaker SensorThe high-voltage circuit is intercepted if a vehicle collision has been detected.
DiagnosisWhen the HV ECU detects a malfunction, the HV ECU diagnosis and
memorizes the values corresponding to the failure.
Fail-SafeWhen the HV ECU detects a malfunction, the HV ECU stops or controls the
actuators and ECUs according to the data already stored in memory.

THS (TOYOTA HYBRID SYSTEM)
HV ECUGO
ECM
Engine
Throttle Control
Motor
SPDO
EF1
HTE, ETH
ESA
VVT-i
W
MESTP
Brake Actuator
(Brake Master
Cylinder)
BRAKE ECUBrake Actuator
(Solenoid Valves)
Pressure Sensors
Signal
HV ECU Pressure
BTH
Total Brake Force
RequestedHTB
Regenerative Brake
Force Transmitted29
3. ECM Control
The ECM receives the demand torque and the target rpm which were sent from HV ECU (THE, ETH), and
controls the degree of throttle valve opening, fuel injection timing, ignition time and VVT-i.
In addition, the actual rpm is sent to the HV ECU with GO, and the speed signal from the hybrid transaxle
is received through HV ECU with SPDO.
When the vehicle is stopped, the HV ECU may send an engine stop (ESTP) command to the ECM to reduce
fuel used.
When a malfunction occurs in the system, the ECM activates MIL via the directions from the HV ECU.
4. BRAKE ECU Control
The brake ECU calculates the total braking force needed, based on the master cylinder pressure in the brake
actuator generated when the driver depresses the brake pedal, and sends this valve to the HV ECU.
The HV ECU computes a part for the regeneration brake force from the total braking force, and sends the
result to the brake ECU.
The HV ECU executes to the minus torque to MG2, and carries out the regenerative brake functions.
The brake ECU controls the brake actuator solenoid valves and generates the wheel cylinder pressure, which
is the regenerative brake force subtracted from the total braking force.

THS (TOYOTA HYBRID SYSTEM)
182CH05
Stator
Rotor
Speed Sensor (Resolver)
MG1
182CH04
Stator
Rotor
Speed Sensor (Resolver)
MG2
182TH07
N.m
350
300
250
200
150
100
50
0
01000 30002000 50004000 60000 20 40
30
10 kW
Torque
Engine Speed (rpm)Output
Torque
Output
33
MG1 AND MG2 (MOTOR GENERATOR NO.1 AND NO.2)
DESCRIPTION
Both the MG1 and the MG2 are compact, lightweight, and highly efficient alternating current permanent
magnet synchronous type.
Serving as the source of supplemental motive force that provides power assistance to the engine as needed,
the electric motor helps the vehicle achieve excellent dynamic performance, including smooth start-offs
and acceleration. When the regenerative brake is activated, MG2 converts the vehicle's kinetic energy into
electrical energy, which is then stored in the HV battery.
MG1 recharges the HV battery and supplies electrical power to drive MG2. In addition, by regulating the
amount of electrical power generated (thus varying the generator's rpm), MG1 effectively controls the
continuously variable transmission function of the transaxle. MG1 also serves as the starter to start the
engine.

MG2 Specifications 
TypePermanent Magnet
Motor (1CM)
Rated voltage [V]273.6
Maximum output [kW] (rpm)33 / (1040
5600)
Maximum torque [N.m (kgf.m) (rpm)350 / (0
400)
Amperage at maximum torque [A]351
Cooling systemWater-cooled

Performance Curve