2001 TOYOTA PRIUS Brake actuator

2001 PRIUS (EWD414U)
G ELECTRICAL WIRING ROUTING
Position of Parts in Engine Compartment
A 1 A/C Condenser Fan Motor
A 2 A/C Magnetic Clutch and Lock Sensor
A 3 A/C Triple Pressure SW
(A/C Dual and Single Pressure SW)
A 4 ABS Speed Sensor Front LH
A 5 ABS Speed Sensor Front RH
A 6 Ambient Temp. Sensor
B 1 Brake Actuator
B 2 Brake Actuator
B 3 Brake Actuator
B 4 Brake Fluid Level Warning SW
C 1 Camshaft Position Sensor
C 2 Camshaft Timing Oil Control Valve
C 3 Circuit Breaker Sensor
C 4 Converter
C 5 Converter
C 6 Crankshaft Position Sensor
D 1 DC Motor
E 1 Engine Coolant Temp. Sensor
E 2 Engine Hood Courtesy SWF 1 Front Airbag Sensor LH
F 2 Front Airbag Sensor RH
F 3 Front Parking Light LH
F 4 Front Parking Light RH
F 5 Front Side Marker Light LH
F 6 Front Side Marker Light RH
F 7 Front Turn Signal Light LH
F 8 Front Turn Signal Light RH
F 9 Front Wiper Motor
F 10 Fusible Link Block No.1
F 11 Fusible Link Block No.1
F 12 Fusible Link Block No.1
F 13 Fusible Link Block No.1
H 1 Headlight LH
H 2 Headlight RH
H 3 Heated Oxygen Sensor (Bank 1 Sensor1)
H 4 Horn
H 5 Hydraulic Booster
H 6 Hydraulic Booster

2001 PRIUS (EWD414U)
2B 5
2G 12
C 1
A 19 A29 D2A27 B 7D3
A 28 A18 A11 D9
B 3A3A6A1B5
A 2B2A5
E 5A 4B4 B 1
E 5 E 5 B 1C9C10 B2C12 B3C4C11 C3C6C2C1
A 1A21 A7A8A9A4A3A5D6D1D8
A 31 6 A
IE SR MR1 MR2 GND1 GND2 MTT MT+ MT± PH PL R1+ R2+ IG2 SFRH SFLH SFLR SRRH SRRR SMC1 SMC2 SS AST SLA+ SLA±
R
R±B
Y±B
R±G
R±Y
R±L
G±W
G±B
G±O
B±O
L
LG W± L
Y±G
Y
GR
Y±R W±B
W±B
W±B
W±B W±B
W±BW±B
W±BW± B
W± BB±W
B±W
R
L±O
Y±B
B±L
LG±R
Y±G
G
G±W
W± B
W± BW± B A
AAA
A A BRAKE ACTUATORB B 1 , B 2A
BRAKE ECUB B10 , B11
A
HYDRAULIC BOOSTERB H 5 , H 6A
JUNCTION
CONNECTOR J 7 JUNCTION
CONNECTOR J 1B 3 C ,
C 5
A 2
SFRR
R±W
C , B12
D , B13
W±B W±B

2001 PRIUS (EWD414U)
ABS
B 8B17
ID 1 2C 7C 8C7
16 D D7A 12 A8
16 C C25A 4
24 C C15 C18 A 11 A7
9C C28A 3
27 C
1 2 A 16 A15
1 2 14 A A13
2 1 19 B B20
P
V
B
W
R
(
SHIELDED) (
SHIELDED)
(
SHIELDED)
B
W
R
(
SHIELDED) LG±R
W± B
W± B
R
G
P
L
P
L W± B
W± B
W± B
ASG3 EFR PFR VFR SG2 EREG PREG VREG SLR± SLR+
LBL GND3 GND4 FL+ FL± FR± RL+ RL±
A 24
IB1 2 IB1 1 IB1 5 BRAKE ACTUATORB B 1 , B 2A
BRAKE ECUB B10 , B11
A
ABS SPEED SENSOR
FRONT LH A 4
ABS SPEED SENSOR
FRONT RH A 5
ABS SPEED SENSOR
REAR LH A23
JUNCTION
CONNECTOR J11
BRAKE FLUID LEVEL
WAR NI NG SW B 4
C , B 3
A 12 A 9A5
10 A A22A 1
23 A
(
SHIELDED)
B
W
R
(
SHIELDED)
SG1 E2 PMC VCM
C , B12
D , B13
FSS FR+
I 1
BR (
SHIELDED)
(
SHIELDED)
(
SHIELDED)
(
SHIELDED) P
L

2001 PRIUS (EWD414U)
D 19 A 10 A6
5D D13A 2
20 D
2 1 11 B B12 B24 B16 B14 B22 B23 15 B C 13
IA2 18
1
(
SHIELDED)
B
W
R
(
SHIELDED) Y
BR
R±Y
LG
V
G
R
B
W R±Y R±Y
E20 30 18 17 4 10
E10A
ABS NO. 4 FROM POWER SOURCE SYSTEM (
SEE PAGE 50)
3
D 22
+BS SG4 ERR PRR VRR
RSS RR+ RR± PKB HVI+ HVI± HVO+ HVO± RRO RLO
L
B 21
ABS SPEED SENSOR
REAR RH A24HYBRID VEHICLE CONTROL ECU H15
EMPS ECU
E 6
JUNCTION
CONNECTOR J12
PARKING
BRAKE SW P 2 I 3
BR±B
(
SHIELDED)
BRAKE ACTUATORB B 1 , B 2AC, B 3
BRAKE ECUB B10 , B11
AC, B12
D , B13
B A
A A
IG A
JUNCTION
CONNECTOR J1 7
(
SHIELDED)
W± B
JUNCTION
CONNECTORB J18 , J19A
W± B
J11
JUNCTION
CONNECTOR A
ID A A
AJ10
JUNCTION
CONNECTOR
(
SHIELDED)
W±B W±B
1
2
B 6
IG15A
ECU±IG
2I 2
B±Y
B EBE A D
C 20
BZ
GB±Y
IA2 13
G
1 2
JUNCTION
CONNECTORB J14 , J15ABRAKE WARNING
BUZZER B14
B±Y
B±Y
BUZZER
I 3
I 3
HVI+ HVI± HVO+ HVO±(
SHIELDED) (
SHIELDED)

2001 PRIUS (EWD414U)
1. INPUT SIGNALS
(1) Speed sensor signal
The speed of the wheels is detected and input to TERMINALS FL+, FR+, RL+ and RR+ of the brake ECU.
(2) Stop light SW signal
A signal is input to TERMINAL STP of the brake ECU when the brake pedal is depressed.
2. ABS SYSTEM OPERATION
During sudden braking the brake ECU has signals input from each sensor, which controls the current to the solenoid inside
the actuator and lets the hydraulic pressure acting on each wheel cylinder escape to the reservoir. The pump inside the
actuator is also operating at this time and it returns the brake fluid from the reservoir to the master cylinder, thus preventing
locking of the vehicle wheels.
If the brake ECU judges that the hydraulic pressure acting on the wheel cylinder is insufficient, the current on the solenoid is
controlled and the hydraulic pressure is increased. Holding of the hydraulic pressure is also controlled by the brake ECU, by
the same method as above. Pressure reduction, holding and increase are repeated to maintain vehicle stability and to
improve steerability during sudden braking.
A4, A5 ABS SPEED SENSOR FRONT LH, RH
2±1 :1.4±1.8 kW (20°C, 68°F)
A23, A24 ABS SPEED SENSOR REAR LH, RH
2±1 :1.04±1.3 kW (20°C, 68°F)
B10 (A), B11 (B), B12 (C), B13 (D) BRAKE ECU
(B) 6, (C) 1±GROUND : Approx. 12 volts with the ignition SW at ON position
(D) 22±GROUND : Always approx. 12 volts
(A) 6, (A)31±GROUND : Always continuity
: PARTS LOCATION
CodeSee PageCodeSee PageCodeSee Page
A434C10A36J1037
A534C11B36J1137
A736D236J1237
A2338E636J14A37
A2438E1036J15B37
B1A34F12C34J1637
B2B34F13D34J1737
B3C34F1838J18A37
B434G137J19B37
B8A36H5A34J2237
B10A36H6B34J2637
B11B36H1538P237
B12C36I1537S337
B13D36J137
B1436J737
: RELAY BLOCKS
CodeSee PageRelay Blocks (Relay Block Location)
223Engine Room R/B No.2 (Right Side of Reserve Tank)
324Engine Room R/B No.3 (Engine Compartment Right)
SYSTEM OUTLINE
SERVICE HINTS

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) A 1
A/C Condenser Fan Motor90980±11237
A 2A/C Magnetic Clutch and Lock Sensor90980±10942
A 3A/C Triple Pressure SW (A/C Dual and
Single Pressure SW)90980±10943
A 4ABS Speed Sensor Front LH90980±11003A 5ABS Speed Sensor Front RH90980±11003
A 6Ambient Temp. Sensor90980±11070
A 7A/C Amplifier90980±11911
A 8A/C Amplifier90980±11913
A 9A/C Amplifier90980±11927
A10A/C Room Temp. Sensor
A11A/C Solar Sensor90980±11919
A12A/C Thermistor
A13Accel Position Sensor90980±11144
A14Air Inlet Control Servo Motor90980±11921
A15Air Mix Control Servo Motor90980±11909A16Air Vent Mode Control Servo Motor90980±11909
A17Airbag Sensor Assembly90980±11869
A18Airbag Sensor Assembly90980±11872
A19Airbag Sensor Assembly90980±11867
A20Airbag Squib (Front Passenger Airbag
Assembly)90980±11884
A21Airbag Squib (Steering Wheel Pad)90980±10850
A22Ashtray Illumination90980±12111
A23ABS Speed Sensor Rear LH90980±11060A24ABS Speed Sensor Rear RH90980±11060
B 1Brake Actuator90980±11087
B 2Brake Actuator90980±11161
B 3Brake Actuator90980±11698
B 4Brake Fluid Level Warning SW90980±11207
B 5Back±Up Light Relay82660±20340
B 6Blower Motor90980±10214
B 7Blower Motor Linear Controller90980±11676
B 8Body ECU90980±11971
B 9Body ECU90980±11973
B10Brake ECU90980±11935
B11Brake ECU90980±11476
B12Brake ECU90980±11637
B13Brake ECU90980±11638
B14Brake Warning Buzzer90980±10906
B15Battery Blower Motor82824±47130
B16Battery Blower Motor Controller90980±11676
B17Battery ECU90980±11392
B18Battery ECU90980±11424
B19Battery Fan Relay82660±20340
B20Buckle SW and Tension Reducer LH
B21Buckle SW RH and Seat Belt Warning
Occupant Detection Sensor90980±11471
C 1Camshaft Position Sensor90980±10947
C 2Camshaft Timing Oil Control Valve90980±11162
C 3Circuit Breaker Sensor90980±11898
C 4Converter90980±10942
C 5Converter90980±11963
C 6Crankshaft Position Sensor90980±12028
C 7Center Cluster SW90980±10801
C 8Cigarette Lighter90980±10760
C 9Cigarette Lighter Illumination90980±11148
C10Combination Meter90980±11927
C11Combination Meter90980±11923
C12Combination SW90980±11594
C13Combination SW90980±11672
C14Combination SW90980±11616
D 1DC Motor90980±10838
D 2Data Link Connector 390980±11665
D 3Daytime Running Light Relay90980±12034
D 4Diode (Door Courtesy)90980±11251
D 5Diode (Daytime Running Light)90980±10962
D 6Door Courtesy SW Front LH
D 7Door Courtesy SW Front RH90980±10871D 8Door Courtesy SW Rear LH90980±10871
D 9Door Courtesy SW Rear RH
D10Door Lock Control SW Front RH90980±10797
D11Door Lock Motor and Door Unlock
Detection SW Rear LH
90980±11150
D12Door Lock Motor and Door Unlock
Detection SW Rear RH90980±11 150
D13Door Lock Motor, Door Key Lock and
Unlock SW and Door Unlock Detection SW
Front LH
90980±11858
D14Door Lock Motor, Door Key Lock and
Unlock SW and Door Unlock Detection SW
Front RH90980±11 858
E 1Engine Coolant Temp. Sensor90980±10737
E 2Engine Hood Courtesy SW90980±11189
E 3EMPS ECU90980±12012
E 4EMPS ECU90980±11579
E 5EMPS ECU90980±12120
E 6EMPS ECU90980±11923
E 7Engine Control Module90980±11421
E 8Engine Control Module90980±11476
E 9Engine Control Module90980±11637

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) 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.