Hybrid battery TOYOTA PRIUS 2001 Service Repair Manual

2001 PRIUS (EWD414U)
G ELECTRICAL WIRING ROUTING
Position of Parts in Body
A 23 ABS Speed Sensor Rear LH
A 24 ABS Speed Sensor Rear RH
B 15 Battery Blower Motor
B 16 Battery Blower Motor Controller
B 17 Battery ECU
B 18 Battery ECU
B 19 Battery Fan Relay
B 20 Buckle SW and Tension Reducer LH
B 21 Buckle SW RH and
Seat Belt Warning Occupant Detection Sensor
D 6 Door Courtesy SW Front LH
D 7 Door Courtesy SW Front RH
D 8 Door Courtesy SW Rear LH
D 9 Door Courtesy SW Rear RH
D 10 Door Lock Control SW Front RH
D 11 Door Lock Motor and Door Unlock Detection SW
Rear LH
D 12 Door Lock Motor and Door Unlock Detection SW
Rear RH
D 13 Door Lock Motor, Door Key Lock and Unlock SW and
Door Unlock Detection SW Front LH
D 14 Door Lock Motor, Door Key Lock and Unlock SW and
Door Unlock Detection SW Front RHF 14 Front Door Speaker LH
F 15 Front Door Speaker RH
F 16 Fuel Pump and Fuel Sender
F 17 Fusible Link Block No.2
F 18 Fusible Link Block No.2
H 15 High Mounted Stop Light
H 16 Hybrid Vehicle Battery
H 17 Hybrid Vehicle Battery
I 16 Interior Light
I 17 Interlock SW
J 30 Junction Connector
J 31 Junction Connector
J 32 Junction Connector
J 33 Junction Connector
L 2 License Plate Light LH
L 3 License Plate Light RH
L 4 Luggage Compartment Door Unlock SW
L 5 Luggage Compartment Light
L 6 Luggage Compartment Light SW

2001 PRIUS (EWD414U)
TOYOTA HYBRID SYSTEM
C 1
1D1B 215A
AM2 1J 9ST2IG2 AM2 6
BATTERY7
IGNITION SW I15
FUSIBLE
LINK
BLOCK
NO. 1D F1 2 , F13C
B±G B W±R W±R
2C 2
2G 1
120A MAIN
1
FUSIBLE
LINK BLOCK
NO. 2 F18A CACE 7
B B
ID1 63 4D 2D16 ST1± IGSW CCS
B±W
B±Y
L LB±W
B±W
E 6ST2
R±W
STOP LIGHT SW S 3
B±W 8
IGA AAAB A B A B AD 31 D24
5
A 4
CRUISE CONTROL SW
[COMB. SW] C14
W±B W±B
W±B
W±BW±B
W±B
D 1STP GND1 GND2
G±W
JUNCTION
CONNECTOR J17
FROM STOP LIGHT
SW
W±B JUNCTION
CONNECTORB J18 , J19A
JUNCTION
CONNECTORB J24 A , J25
H14 , D H13 , E H12 , B CH11, H10 A
HYBRID VEHICLE CONTROL ECU
B±W
CCS
CRUISE
RES/ACC
SET/COAST
CANCEL 11 2G52B
1J 3
32 51
1A 21K3
IK1 14
M
1 2
E 5
B±W B±W B±W
W±B W±B W±B
W± B
WATER PUMP MOTOR
(
INVERTER) W 3
IG2
RELAYB±W
B±W
R±W
W±B ECC

2001 PRIUS (EWD414U)
TOYOTA HYBRID SYSTEM
BJA 22A 17 A16 IB1 10 IB16 D 26 D25
R±W
B±L W± B W± B
R±W
B±LR±W
B± L
BATTERY ECUB B1 7 , B1 8A HYBRID VEHICLE CONTROL ECUA H10 , H11
CB, H12
E , H13
D , H14
GB 1B
O(
*2)
O(
*2)
IHO(
*2)
GR±B
GR
BR
10A
GAUGE FROM POWER SOURCE SYSTEM (
SEE PAGE 50)
2A 515A
DOME
1J 7
L±Y
2G 2
2A 4L
L
A 21 A 22
CHARGE
OU TPUT
CONTROL
CRUISE
A 14 B2
L
COMBINATION METERB C10 , C11A
LV±W
2B 7
2A 6
A 13A G
B GIE1 19B 8SPDI
JUNCTION
CONNECTORB J27 , J28A
V±W V±W
W±R
2A 1IH1I 9 W±GW±G
B 3
62B 72AO(
*2)
W±R GR GR±B L
W± B
W±G

2001 PRIUS (EWD414U)
IH1 8IH19 B 13 B2
IF1 11E 1
B 4B10 B3 A 6A7A18 A19E 18 E 19 E 20 E 2
B 2
B B B BA CAC
W
B
R
GW
B
R
G
W± B
W± B
Y
Y±B
Y±RW
B
R
G
V
GR
P V
GR
P Y±RY±BY
W±B
BATTERY ECUB B17 , B18A
JUNCTION
CONNECTORB J32 A , J33
HYBRID VEHICLE CONTROL ECUA H10 , H11CB, H12 E, H13 D, H14
CON1 CON2 CON3 HTD+ HTD± DTH+ DTH±
* 1 : SHIELDED
B 1 A 1
W± B
O(
*2)IF2 5 IF2 1IF22IF24IF23* 2 : HIGH VOLTAGE (
273. 6V)
W±GW±G
1C 7A 2A 6A5A 4A 3A
1D 1E
O(
*2) O(
*2)
W± B
O(
*2)
O(
*2)(
*1) (
*1)
O(
*2)
W± B
W± B
SYSTEM MAIN RELAYE S11
D, S12C , S10 S 9 , A S 8 B

2001 PRIUS (EWD414U)
TOYOTA HYBRID SYSTEM
HYBRID VEHICLE CONTROL ECUA H10 , H11
CB, H12
E , H13
D , H14
W± BW± B HTB± BTH+
18 D
G
14
HVO+ HVO±22
R
D 17BTH±
30 D
V
16
HVI± HTB+
20 D
LG
24
HVI+ B 14 B15
1
2
G±R
G±R BR±B CIRCUIT BREAKER SENSOR C 3
AS1G AS1
BRAKE ECU B1 1
GR± B
V± Y
GR
O
LG±B
L±O
LG
P
Y± B
L±W
L
LG±R
Y
P±L
G
L±R
G± W
R
W
L±B
14 2 15 3 16 4 17 5 18 6 7 20 8 21 9 22 10 23 11 24HYBRID VEHICLE BATTERY
BUSBER MODULED 10TC
D 21SIL
D 9WF SE
ID1 2ID11 ID1 10CE
E
13 15C
E
P
P±B P±BY Y
P±B P
P±B
W± L W±L
EJUNCTION
CONNECTOR J1 6
TC WF SEE 10HAI
Y±R
E 9HAO
Y±R12
OP28
OP3JUNCTION
CONNECTOR J26 W±GW±G
W
1234
L
L
B
B
W
W
5
W
7
SIL
O(
*2) O(
*2)
A 1B 1
SERVICE PLUG
O
(
*2)O
(
*2)
HYBRID VEHICLE BATTERY
BUSBER MODULESENSOR
O O
(
*2)
(
*2)
HYBRID VEHICLE
BATTERYB H16 , H17A
BATTERY ECUB B17 , B18A
W
DATA LINK
CONNECTOR 3 D 2

2001 PRIUS (EWD414U)
22 22
IE 3D
4IA1
25 13
A B A BB B
IH1 5
A 1A
A A 20A
HV10A
BATT FAN
11 1F 1J8
25 13IH1 7
1
2M
B 82BB 934
21 FROM POWER SOURCE SYSTEM (
SEE PAGE 50)
LG±R
L±R
L±B
W±B W±BL
L±B L±B
L±BL
W±B
LL±RL±RG±Y
B
W± G
IGCT RELAYG± Y G±Y
G±Y
G± Y W± B G±Y G±YG±Y
W±BL LG±R
BATTERY BLOWER MOTOR B15
BATTERY FAN
RELAY B19
BATTERY ECUB B17 , B18A
JUNCTION
CONNECTORB J 2 A , J 3
HYBRID VEHICLE CONTROL ECUA H10 , H11CB, H12 E, H13 D, H14
BATT
W± G7MREL
O
G±Y
JUNCTION
CONNECTOR J 7
JUNCTION
CONNECTOR J 1
* 2 : HIGH VOLTAGE (
273. 6V)
BI B
B
JUNCTION
CONNECTOR J32 W± B W± BW± B
FCVC
7D
B±W
8
HEVC ABFS
3E
L
23
GSW2
TRANSPONDER
KEY COMPUTER T 4 AIRBAG SENSOR
ASSEMBLY A18
A
W
8A A AA
B C
WJUNCTION
CONNECTORB J22 A , J23
IF1 3
BATTERY
MOTOR
BLOWER
CONTROLLER B16
678910
W
R
R
G
G
W
W
W
W
HYBRID VEHICLE
BATTERYB H16 , H17A
SENSOR

2001 PRIUS (EWD414U)
TOYOTA HYBRID SYSTEM
FEATURES OF TOYOTA HYBRID SYSTEM
This system controls the following modes in order to achieve the most efficient operations to match the driving conditions.
(1) Supply of electrical power from the HV battery to motor generator no.2 provides force to drive the wheels.
(2) While the tires are driven by the engine via the planetary gears, motor generator no.1 is driven via the planetary gears to
supply electricity to motor generator no.2 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 motor generator no.2.
The hybrid vehicle control ECU switches between these modes (1, 2, 1+2, or 3) according to the driving conditions.
However, when the state of charge of the HV battery is low, the HV battery is charged by the engine by turning motor
generator no.1.
CRUISE CONTROL OPERATION
Cruise control is the speed control device, which sets the desired speed by just operating the switch on the control panel
without pressing the accelerator pedal. This device is used when you would like to drive the vehicle at the fixed speed.
1. SET CONTROL
If you operate the SET/COAST switch when driving (The available range of set speed: between about 40 and 200 km/h) with
the main switch is ON (When power indicator comes on), the device memorizes vehicle's speed when switch is off and
controls the fixed speed.
2. SET SPEED CONTROL
This device compares the vehicle's running speed and the memorized speed, and controls the driving power of the motor
and the engine by calculating the cruise control requirements so that both speed become equivalent.
3. COAST CONTROL
If the SET/COAST switch is continued to be ON during the running with the cruise control, the device recognizes the cruise
control requirement is at 0 and decelerates the vehicle's speed. Then the device memorizes the speed when the switch is off
in order to control the fixed speed.
In each time you operate SET/COAST switch momentarily (For about 0.5 second), the memorized speed is decreased in
about 1.5 km/h. However, in case of the tap±down operation with more than 5±km/h gap between the memorized speed and
vehicle's running speed, the device memorizes the vehicle's speed when the switch is off and controls the fixed speed.
4. ACCEL CONTROL
If the RESUME/ACCEL switch is continued to be ON during the running with the cruise control, the device recognizes the
cruise control is on the acceleration side and accelerates the vehicle's speed. Then the running speed when the switch is off
is memorized to control the fixed speed.
In each time you operate RESUME/ACCEL switch momentarily (For about 0.5 second), the memorized speed is increased
in about 1.5 km/h. However, if there is more than 5±km/h gap between the memorized speed and vehicle's running speed,
this operation does not change the memorized speed. (Tap±up operation is not available.)
5. RESUME CONTROL
If the running speed is faster than the low speed limit after the cruise control is canceled manually, the fixed speed is
controlled by the OFF±ON operation of RESUME/ACCEL switch, so that the vehicle's speed returns to the memorized
speed at the time the cruise control is released.
SYSTEM OUTLINE

2001 PRIUS (EWD414U)
HYBRID VEHICLE IMMOBILISER SYSTEM
7. 5A
ECU±B FROM POWER SOURCE SYSTEM (
SEE PAGE 50)
2C 5
A A AA F
B H
5JUNCTION
CONNECTOR J20
JUNCTION
CONNECTOR J11 1
12
R±G R±G R±G LG±B
W±B W± B W±B
+B HEVC
IND
JUNCTION
CONNECTORB J27 A , J28
ID2 10 ID2 11 76
15A
AM2
1B 21J 92C 2
2G 1
D 1C 1
120A MAIN
1AM2 IG2
ST2
IFC 8
B 7B E
A A
JUNCTION
CONNECTORB J27 A , J28
JUNCTION
CONNECTORB J27 A , J28
B F
A D
JUNCTION
CONNECTORB J12 A , J13
B D
A B
JUNCTION
CONNECTORB J27 A , J28
A A
B A
JUNCTION
CONNECTORB J24 A , J25
ID A A
2D 8
1 2ID1 9B B
IB1 3
1 ID2 8
JUNCTION
CONNECTOR J10
JUNCTION
CONNECTOR J20
46711 7
238
6DATA LINK
CONNECTOR 3 D 2
HYBRID VEHICLE
CONTROL ECU H14
CENTER
CLUSTER SW C 7
DOOR COURTESY
SW FRONT LH D 6
UNLOCK WARNING SW U 1RADIO AND PLAYERC R 3 B , R 4FUSIBLE LINK
BLOCK NO. 1D F1 2 C , F13 BATTERYB±G B W±R W±R
B±W B±W B±W
B±R
B±WB±R R±W
L±B
W±BL±B L±B L±B
W±BR±W R±WLG±B BR BR
LG±B
2K 8
A IG D
KSW CTY
LG±B
FUSIBLE LINK
BLOCK NO. 2 F18
W±B
W± B ID1 8
R±G
IGNITION SW I15
OP1 FC VC
GND
TRANSPONDER KEY
COMPUTER T 4 A C
A CJUNCTION
CONNECTORJ24 A

2001 PRIUS (EWD414U)
SRS
C 1
D 11B 215A
AM2 1J 976AM2 AM1ACC
IG1
IG2
ST2
1 2 2 1 2 1 12
SPIRAL
CABLE B 14 B13 B10 B11 A6A5C2C1 10A
SRS ACC FROM POWER SOURCE SYSTEM (
SEE PAGE 50)
2E 4
2B 5
2E 2
B 5B6B23 A7A10 A12 A9C12 C9C7C104 3 2 1 4 3 2 1 3
SIDE AIRBAG
SQUIB RH S 7
SIDE AIRBAG
SQUIB LH S 6
AIRBAG SQUIB
(
FRONT PASSENGER
AIRBAG ASSEMBLY) A20
AIRBAG SQUIB
(
STEERING
WHEEL PAD) A21 IGNITION SW I15
SIDE AIRBAG SENSOR RH S 5
SIDE AIRBAG SENSOR LH S 4
HYBRID VEHICLE
CONTROL ECU H13
FUSIBLE
LINK
BLOCK
NO. 1D F1 2 , F13CAIRBAG SENSOR ASSEMBLYB A17 , A18AC, A19 ABFS
B±G B W±R W±R
B±W B±O
GR
L
P±L
L±W
LG±B
GR ±L
P
L±Y
LG
GR Y±B
Y
Y±R
Y±G
Y±R
Y±G
Y±G
Y±R
BATTERYD+ D± P+ P± SFL+ SFR±SFL± SFR+ IG2 ACC GSW2 VUPL SSL+ SSL± ESL VUPR SSR+ SSR± ESR
GR
2C 2
2G 1
120A MAIN
1
FUSIBLE
LINK BLOCK
NO. 2 F18
1 212 A 2A1C5C6
P15
PRETENSIONER
RH PRETENSIONER
LH P14
Y±B
Y
Y±B
Y
PL+ PL± PR+ PR±
P±L
(
*1)
(
*1)
(
*1)
(
*1)
(
*1)
(
*1)
(
*1)
(
*1) (
*1) (
*1) (
*1) (
*1)

2001 PRIUS (EWD414U)
I GROUND POINT
REAR COMBINATION
LIGHT LH
LICENSE PLATE
LIGHT LH
HIGH MOUNTED
STOP LIGHT
REAR COMBINATION
LIGHT RH
LICENSE PLATE
LIGHT RH
SYSTEM MAIN RELAY
LUGGAGE COMPARTMENT
DOOR UNLOCK SWBATTERY MOTOR
BLOWER CONTROLLER
PERSONAL LIGHT
POWER WINDOW
CONTROL SW REAR LH
DOOR LOCK MOTOR
AND DOOR UNLOCK
DETECTION SW
REAR LH
BATTERY FAN RELAY
BATTERY ECUB C
B C
B CA B
A B
A B
BA11
B B
B BA C
B B
BJBK BI W± B
W± B
W± B
W± B
W± B
W± B
W± B
W± B W± BW±BW± B W±B W±B
W±B
W±B
W±B
W±B
JUNCTION
CONNECTORB J32 , J33A
JUNCTION
CONNECTORB J32 , J33
AB 1 W±B
W± B
HYBRID VEHICLE
CONTROL ECUCOMBINATION
SW COMBINATION SW
COMBINATION SW
TURN SIGNAL
FLASHER RELAYDOOR LOCK CONTROL
SW FRONT RH DOOR LOCK MOTOR,
DOOR KEY LOCK AND
UNLOCK SW AND DOOR
UNLOCK DETECTION
SW FRONT RH
B(
ECC)
(
GND1)
(
GND2)
A A
W± B A
W± B
B A B W±B W±B W±B W±B
W± BW± B
W± B 7
IQ1
2
IQ1
A AA
W± B A
B
A
B A
A A
A (
E)
(
E)
BLW±B
W±B
BC1 8A A
W±B
JUNCTION
CONNECTORB J18 , J19A W±B