ECU TOYOTA PRIUS 2001 Service User Guide

2001 PRIUS (EWD414U)
I 4D 13 D14 D23 D22
6541
Y
G
B
R R B GYW± B
(
*1) W± B
E 15 E13 E23 E22 E14 E12 E11 E21 E5
A EB D
ID 2K 82D 8A AAAB AI 2 VCP1 VPA1 VCP2 EP2 P N D B R VSFT SFT GSFT
25674 983
L±R
L±W
L±B
LG±R
R±B
W
B
R L±R
L±W
L±B
LG±R
R±B
W
B
R
W±B(
*1)
W±B W±B W±B
W±B W± B W± B
E E
JUNCTION
CONNECTOR J11JUNCTION
CONNECTOR J21
W±B
JUNCTION CONNECTORB J22 A , J23
JUNCTION
CONNECTORB J2 4 , J2 5A ACCEL POSITION SENSOR A13
PARK/NEUTRAL
POSITION SW P 1H14 , D H13 , E H12 , B CH11, H10 A
HYBRID VEHICLE CONTROL ECU
EOM
A W± BW± B VCP1 VPA1 EP1 VCP2 VPA2 EP2
LL
3 12 DEP1
WW
2 15 DVPA2
A E
1
W±B W± B
* 1 : SHIELDED

2001 PRIUS (EWD414U)
TOYOTA HYBRID SYSTEM
A 7A2A1A6A3A8A9A4B5B2C 13 C 20 C 1 C 8 C 12 C 5 C 17 C 10 C 4 C 11
I 8
I 8
A B A B
B C A B
B C 1A 11K 3
G
R
B
W
Y
BR
G±W
B±R
G
RRG B±R G± WBRY WB R G
W± B
W±B
W±B
W±B W±BW±B
(
*1)(
*1) (
*1)
(
*1)
W± B
W±B
HYBRID VEHICLE CONTROL ECUA H10 , H11CB, H12 E, H13 D, H14
JUNCTION
CONNECTORB J 8 , J 9A
W± B W± B
W± B
W± B MSN MSNG GMT GMTG GCSG GCS GRFG GRF GSN GSNG
(
*1)
W± BGSNG GSN GRF GRFG GCS GCSG GMTG GMT MSNG MSN
MOTOR GENERATOR
NO. 2C M 3 , M 4
B
MOTOR GENERATOR
NO. 1M 2
A

2001 PRIUS (EWD414U)
B 3B6B1B4C3C1C 2 C 9 C 18 C 19 C 21 C 14
I 8I 8
P
L
B
W
R±W
GR GRR±WWBL P (
*1)
(
*1)
(
*1)
HYBRID VEHICLE CONTROL ECUA H10 , H11CB, H12 E, H13 D, H14
W± B
W± BMMT MMTG MRFG MRF MCSG MCS
(
*1)
W± B
W±B
D 6 D 8 D 29 D 19 D 27 D 28
IG A
JUNCTION
CONNECTOR J17JUNCTION
CONNECTOR J1 8
B BB
L
Y
BR
R±Y
OP
O R±YBRYL P(
*1)
(
*1) (
*1)
(
*1) W± B W± B
SPDO ESTP HTE± HTE+ ETH± ETH+
C 10
SPHV C 16
ESTP C 18
HTE± C 19
HTE+ C 27
ETH± C 28
ETH+
D 13MPX2
D 14MPX1 ENGINE CONTROL MODULED E 9 , E10C
GR GR± L
16
15
GR±B
MPX±
MPX+
BODY ECU B 8
GR±B
GR
W± B W± BW± B
W± B MCS MCSG MRF MRFG MMTG MMT
MOTOR GENERATOR
NO. 2C M 3 , M 4
BB 10
GO
G G
GO
21 CIA2 9
11
4 MPD2
MPD1
4
11MP2+
MPX+
GR±B
G 1
GATEWAY ECU A 7
A/C AMPLIFIER GR
* 1 : SH IELD ED

2001 PRIUS (EWD414U)
TOYOTA HYBRID SYSTEM
A 21 A13 A11 A6A4A5A26 A16 A7A17 A20 A25 A19 A8A18 A28
C 7D4D5D3D1D2D6C1C3C4C5C2B1B3B4B2GIWA GIWB GI VB GI VA MI WA VB MI WB MIVB MIVA MIVG MVU MUU MWU MIT MSDN MSIV
IE
G
R G WB R
Y G WB
B WR GL YG
R G WB RY G WB
B WR
GL Y (
*1) (
*1) (
*1) (
*1)
(
*1)
(
*1)
(
*1)
(
*1)
W± B
W± B
AAAA
A AJUNCTION
CONNECTOR J 7
JUNCTION
CONNECTOR J 1HYBRID VEHICLE CONTROL ECUA H10 , H11CB, H12 E, H13 D, H14
INVERTERC I 9 , I10DA, I11
A B 6
W± B
W± BGR±B
GR GR±B
GRB , I12
W± B
A
W± B
A
W± B
W± BE , I13 F, I14 M±SINV M±SDOWN M±INVT M±WU M±UU M±VU M±GINV M±IVA M±IVB M±IWB VB M±IWA G±IVA G±IVB G±IWB G±IWA
GND
A
EC W±B

2001 PRIUS (EWD414U)
A 12 A23 A3A2A1
A 4A5A3A2A1A6A 27GIVG GUU GVU GWU G1 T GSDN
C 8B7B8 A 14 A15 A24 MFIV GSIV GFIV
B GB
B R WGL Y
B GB
B R WGL Y
(
*1)HYBRID VEHICLE CONTROL ECUA H10 , H11CB, H12 E, H13 D, H14
INVERTERA , I11
* 1 : SHIELDEDE 1 F 1
O O
O(
*2) O(
*2)
GR±B
GR GR±B
GRB , I12
(
*2)
(
*2)
* 2 : HIGH VOLTAGE (
273. 6V)34D 5D
IA1 13 12 IA1
I 9 B 4
2
IH1 2
B±R B±R
A
L±O
W±G W±G W±G
W±G L±O
W±G
+B1 +B2 NODD
A 4A1
B 5
W±GFUSIBLE LINK
BLOCK NO. 2 F175A DC/DC±S
CONVERTERC 4 A
A 2
14 IE1
10
Y Y
IDH
A/C
AMPLIFIER A 7 FROM POWER SOURCE SYSTEM
(
SEE PAGE 50)
W±G E 4
C 6IH1 4IF1 10
O O V±R V±R
ILK
2 1
INTERLOCK SW I17 W±G
E , I13 F, I14B , C 5
100A DC/DC
F10
FUSIBLE LINK
BLOCK NO. 1 W
1
B 1
CEI CBI IGCT G±SDOWN G±INVT G±WU G±VU G±UU G±GINV M±FINV G±SINV G±FINV CVRSW NODD AMD S IGCT
IDH C I 9 , I10D
Y

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