TOYOTA PRIUS 2001 Service Repair Manual

M
2001 PRIUS (EWD414U)
[A]: System Title
[B]: Indicates the wiring color.
Wire colors are indicated by an alphabetical code.
B = Black W = White BR = Brown
L = Blue V = Violet SB = Sky Blue
R = Red O = Orange LG = Light Green
P = Pink Y = Yellow GR = Gray
G = Green
The first letter indicates the basic wire color and the
second letter indicates the color of the stripe.
Example: L ± Y
L
(Blue)Y
(Yellow)
[C]: The position of the parts is the same as shown in
the wiring diagram and wire routing.
[D]: Indicates the pin number of the connector.
The numbering system is different for female
and male connectors.
Example :
Numbered in order
from upper left to
lower rightNumbered in order
from upper right to
lower left
Female Male
The numbering system for the overall wiring
diagram is the same as above
[E]: Indicates a Relay Block. No shading is used and
only the Relay Block No. is shown to distinguish
it from the J/B.
Example : Indicates Relay Block No.1
[F]: Junction Block (The number in the circle is the
J/B No. and the connector code is shown beside
it). Junction Blocks are shaded to clearly
separate them from other parts.
3C indicates
that it is inside
Junction Block
No.3 Example:

[G]: Indicates related system.
[H]: Indicates the wiring harness and wiring harness
connector. The wiring harness with male
terminal is shown with arrows (
).
Outside numerals are pin numbers.
Female Male ( )
[I]: ( ) is used to indicate different wiring and
connector, etc. when the vehicle model, engine
type, or specification is different.
[J]: Indicates a shielded cable.
[K]: Indicates and located on ground point.
[L]: The same code occuring on the next page
indicates that the wire harness is continuous.

SYSTEM INDEX
M OVERALL ELECTRICAL WIRING DIAGRAM
2001 PRIUS (EWD414U)
SYSTEMS LOCATION SYSTEMS LOCATION
ABS 19±3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Air Conditioning 24±2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Back±Up Light 6±2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cigarette Lighter 11±4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Combination Meter 23±2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Door Lock Control 15±2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electric Tension Reducer 13±4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
EMPS 20±3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Engine Control 2±3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Gateway System 14±8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Headlight (w/ Daytime Running Light) 4±2. . . . . . . . . . . . . . . . . . . . . . . . . .
Headlight (w/o Daytime Running Light) 3±2. . . . . . . . . . . . . . . . . . . . . . . . .
Horn 12±2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Hybrid Vehicle Immobiliser System 2±16. . . . . . . . . . . . . . . . . . . . . . . . . . .
Illumination 8±2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Interior Light 10±3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Key Reminder and Light Reminder Buzzer 9±2. . . . . . . . . . . . . . . . . . . . . .
Light Auto Turn Off 9±3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Navigation System 14±5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Source 1~24±1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Window 18±2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Radiator Fan and Condenser Fan 22±3. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Radio and Player 14±2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rear Window Defogger 22±2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Remote Control Mirror 11±2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Seat Belt Warning 9±4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Shift Lock 13±3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SRS 21±2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Stop Light 3±4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Taillight 7±2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Theft Deterrent 17±2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TOYOTA Hybrid System 1±2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
* Charging
* Cruise Control
* Regenerative Brake
Turn Signal and Hazard Warning Light 5±2. . . . . . . . . . . . . . . . . . . . . . . . . .
Wiper and Washer 12±3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Wireless Door Lock Control 16±2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2001 PRIUS (EWD414U)
M
1
234
1 PRIUS ELECTRICAL WIRING DIAGRAM(
Cont. next page)
1C1B 2 1J 82C 2
2G 1W± R
B±GW± R
BATTERY 120A
MAI N 5A
DC/ DC±S1B 2A1F 11
1B 11J 9
F1 7 F18,
FUSI BL E LI NK
BLOCK NO. 2AB15 A AM2
10A BATT FAN
20A HV
C B
A
B
BB± R
G±Y
L±R
Power SourceTOYOTA Hybrid System
L±R
G± Y
B±R
2
7ACC
IG1
ST1
IG2
ST2 AM1 4
6
8 AM2
71J15A DOME
2A 5 2B 3
2 1
3 5 2D 6
5A AM1 10A GAUGE
2K 82D8
IDCowl side
panel LH
CHARGE OUT PUT CONTROLCRUI SE
IHRight kick panel 2B 62A 7 22 A 21 A
14 A 3 B2BF
G
I 114 14
A13
11
4 B± W
R± WB±Y W± G
LGR± BR± WB± W
W± B GR L±R G±YB± R
GR
LBR GR±B GR± L GR
GR± B
W± B
W± B
B±Y W± G
W±G
I15
IGNITION SW
L±Y
2G 2
2A 4L
L±Y
F10 F1 2,
FUSIBLE LINK BLOCK NO. 1ACF13, D
J11
JUNCTI ON
CONNECTORMPX + MPD1MPX ±
MPX ± MPX +
MPX 2
MPD2
MP2 +E10
ENGINE
CONTROL
MODULE
G 1
GATEWAY
ECU
A 7
A/C
AMPLIFIER C10 C1 1,
COMBINATION METERAB 100A
DC/DCIG1
RE LAYB 8
BODY ECU
16 15
1
D2 1
3 51A 2
1A 11K3
1BD W
1A2H 1 14 IK1
1J 3
2G 112B 5
W± B
H E W± B
1 2 B± W B± W
W
W
W±B
W±B B±W B±W W± B
W 3
WATER PUMP MOTOR
(
Inverter)
B± W W±BWW
B± W
F11 , B IG2 RELAY

2001 PRIUS (EWD414U)
M OVERALL ELECTRICAL WIRING DIAGRAM
5
678
1 PRIUS (
Cont' d)(
Cont. next page)
6E 7E 2D
CA CA
BB
6ID1B A
16 D
AB AB
AA AAAB 31 D 24 D
IGCowl si de
panel RH1D 13D 14D 12D 23D 15D 22D 15E 13E 23E 22E 14E 12E 11E 21E
AB
AA AA5EG±Y
L±R
G
TOYOTA Hybrid System
B± WB±Y L W± B
W± B G± WY GL B WR
W± BW± B
W±B
B± WW±B W±B W±B
W± B L±R L±WL±B LG±RR± BWB R (
*1)
* 1 : Shielded
4
5
653421 25674 983E
A4E
A ST 2 I GSW ST1 ± CCS GND1 GND2 STP VCP1 VPA1 EP1 VCP2 VPA2 EP2 P N D B R VSFT SFT GSFT EOMH10 H11,
HYBRI D VE HI CLE CONTROL E CUCA
J18 J19,
J UNCTI ON
CONNECTORABJ24 J25,
J UNCTI ON
CONNECTORAB
(
*1)
J24 J25,
JUNCTI ON
CONNECTORABJUNCTI ON
CONNECTORB A J22 J23,
From Stop
Light SW
< 3±4>J21
JUNCTI ON
CONNE CTOR
J17
JUNCTION
CONNECTORA13
ACCEL POSI TI ON SENSORP 1
PARK / NEUTRAL
POSITION SW
C1 4
CRUI SE CONTROL SW
[COMB. SW]
H12 , B E, H13 D, H14
3
S 3
STOP L I GH T S WW±B W±B W± B W± B
W± B
W± B
A
B
C
HF
G
W±B R± W B±WL±R G± Y
B±R
R±W
B± W
B± W
CCS
CRUI SE
RES/ ACC
SET/ COAST
CANCEL
W±B
IW
D
W±B
E
D W
F W± B ECCVCP1 VPA1 EP1 VCP2 VPA2 EP2
E W± BC B± RDB
EA EA
1
W±B
W±B

2001 PRIUS (EWD414U)
M
11 12
10 9
(
Cont. next page)
1 PRIUS (
Cont' d)
A
BG± Y
L±RA
B G±Y
L±R
2C
1B
BA BA
CB CB BA 28D 27D 19D 29D 8D 6D
GI 11 C C4 10C 17C 5C 12C C8 1C20C13C14C21C C19 18 C 9 C
7A 2A A1 6A3A8A9A4A5B2B3B6B1B4B3C
TOYOTA Hybrid System
To Engine Control Module
< 2±13> < 2±14>
W± B
(
*1) (
*1) PLY BR (
*1) R±YO
(
*1)
* 1 : Shielded
W±B W±B
W±BW±B
W±B GR
B WY BR G±WB±RGR
PL B W R± WGR
W±B
ETH+ ETH± HTE+ HTE± E STP SP DO GSNG GSN GRF GRFG GCS GCSG GMTG GMT MS NG MS N MCS MCS G MRF MRFG MMTG MMT
GSNG GSN GRF GRFG GCS GCSG GMTG GMT MS NG MS N MCS MCS G MRF MRFG MMTG MMT
JUNCTION
CONNECTORB A J 8 J 9,
(
*1)
(
*1)
(
*1)(
*1)
(
*1) (
*1)
(
*1)(
*1)
BB
J18
JUNCTI ON
CONNECTOR
W±BH10 H11, CAB E, H13 , H12 D, H14
HYB RI D VE HI CL E CONTROL E CU
W± BW± B W± B
DW
FW±B(
*1) (
*1)
M 2
MOTOR GE NERA TOR NO. 1AM 3 M 4,
MOTOR GENE RATOR NO. 2BC
EW±B
H W CB±R
G B± R
IE Cowl si de
panel LH
(
*1) (
*1) (
*1) (
*1)
W±B W±B
W±B AAAA
A AA
A J 1
JUNCTION
CONNECT OR
J 7
JUNCTI ON
CONNECTOR
C
D
E
F (
*1) (
*1) (
*1) (
*1) 10 B
GGO
B

2001 PRIUS (EWD414U)
M OVERALL ELECTRICAL WIRING DIAGRAM
15 16
14 13
(
Cont. next page)
1 PRIUS (
Cont' d)
A
BG± Y
L±R
21 A 13 A
7C 4DA 11
5D D3 6A A4
1D D2 5A A26
6D C1 16 A A7
3C C4 17 A A20
5C C2 25 A A19
1B B3 8A
4B 18 A
2B 28 A
4A 12 A
5A 23 A
3A 3A
2A 2A
1A 1A
6A 27 A
8C 14 A
7B 15 A
8B 24 AA
B G±Y
L±R
6B4E
10 IF1
4IH1
6C 1E 1FD
E
TOYOTA Hybrid System
GYL G (
*1)
R WB B WGR
Y B WGR YL G WR
B B GB OO V±RV±R
W±B
O(
*2)
O(
*2) 1
2
(
*1)(
*1)(
*1)
I17
INTERLOCK SW H1 0 H11, CAB E, H13 , H12 D, H14
HYB RI D VE HI CL E CONTROL E CU
I 9 I10,
I NVERTERDC MSI V MS DN MI T MWU MU U MVU MI VG MI VA MI VB MI WB V B MI WA GI VA GI VB GI WB GI WA GS DN GI T GWU GVU GUU GI VG MFI V GS I V GFI V I LK
I11 , A* 2 : High Voltage(
273. 6V)
I12 , B
HW1B
W
I13 , E I14, F* 1 : Shielded
C
D
E
F(
*1) (
*1) (
*1) (
*1)
W±B
IB±R
GD 5 D 4
IA1 13 IA1 12+B 1 +B 2
W± G W± G
W± G W± G
W±G
1A 5B4A 4B
IH11
2IH13A 2A
14 IE1 W±G W±G
YB±RY
L±O L±OW±G W± G
C
F W± G
W±R W± G
W±G
NODD
To A/C Amplifier
< 24±6> C 4 C 5,
CONV ERTE RABI GCT M± SI NV M±SD OWN M±I N VT M± WU M± UU M±VU M±GI NV M± I VA M± I VB M±I WB V B M±I WA G±I V A G±I VB G±I WB G±I WA G± SDOWN G± I NV T G±WU G± VU G±U U G±GI NV M±FI N V G±SI N V G± FI NV CVRSW CBI CEI
GND NODD IGCT
IDH AMD S

2001 PRIUS (EWD414U)
M
19 20
18 17
(
Cont. next page)
1 PRIUS (
Cont' d)
A
BG± Y
L±R
14 B 15 BA
B
13B2B1E
4B 10B 3B 22 A
BJRight s ide of
rear pillar CA
BB 1C 1B E D
CA
BB 9D 10D 21D
10 ID1
To Data Link Connector 3
<2±5><2±6>8IH1 9IH111 IF12E
6A8A 3IF1 20 E
7A19 E
18 A18 E
19 A10 IB126 D
17 A6IB1 25 D
16 AF 20 D 3 E 7 D30 D 18 D 17 D
Fr om Br ake ECU
< 19±9>
From Air bag Sens or
Assembly< 21±3> From Transponder
Key Computer< 2±16>
TOYOTA Hybrid System
H1 0 H11, CAB E, H13 , H12 D, H14
HYB RI D VE HI CL E CONTROL E CU
PP P±B W± LV GRP BR± BG± R
V GRP
W±B W±B W±B Y Y± B Y±RW
WB R G R± WB± L
WB R G (
*1) R±WB±L
(
*1)
WB R G R± WB±L LGV G
RL B± WWFS E TC S I L CON1 CON2 CON3 A S1G A S1 HTD+ HTD± DTH+ DTH± GB I B HTB+ HTB± BTH+ B TH± AB FS FCV C
To Data Link Connec tor 3
<2±6>W± B W± B
W± B
W± B O(
*2)
O(
*2)1
2
W
S 8 S 9,
SYSTEM MAI N REL AYAB
J32 J33,
JUNCTION
CONNECTORAB
B17 B18,
BATTERY ECUAB
C 3
CI RCUI T B REA KER
SENSOR
G±Y
L±R * 2 : High Voltage(
273. 6V)
W± B 3A 4A 5A
7A 2A 6A 1AC , S10 9E
YHA O
10 E
Y± RHAI
5IF2 1IF2 2IF2 4IF2 3IF2* 1 : Shielded
To Combinat ion Meter
< 23±2>8BSPDI
19 IE1V±W V±W
F
2A
W± R
W± R CC W± G W±G
1D 1E
O(
*2)
O(
*2) , S11 D , S12 E
E D O(
*2)
O(
*2)

2001 PRIUS (EWD414U)
M OVERALL ELECTRICAL WIRING DIAGRAM
23 24
22 21
1 PRIUS (
Cont' d)F A
B
BB
BA BA 4IA1 G± Y
L±R
5IH1 3D 7B
1A22
222 1
5 3
9B 2B 8B
BI Left s ide of
rear pillar2 1
M2 1
5 3
IECowl si de
panel LH 7IH1
W±B
TOYOTA Hybrid System
H10 H11, CA BE, H13 , H12 D, H14
HYB RI D V EHI CLE CONTROL ECU
34
BA
A 21
BA
JUNCTI ON
CONNE CTORB A J 2 J 3,
B1 7 B18,
BATTERY ECUABLG±R MRE L BATT
G±Y G±YG± Y G± Y
G±Y
G±Y W± G
G± YL L
LG±RL±B L±R W± B W± BW±B W±B
W± B L±B L±B
L W± B L±R L±R
J32
JUNCTI ON
CONNECTORJ 7
J UNCTI ON
CONNE CTOR
J 1
J UNCTI ON
CONNE CTOR
IGCT
REL AY
B19
BATTERY FAN
RELAY W±G
C
O
V± Y
14 2GR±BGR
15
O3
LG±B16
L±O4
LG17
P5
Y± B18
L±W6
L7
LG±R20
Y8
P± L21
G9
L±R22
G±W10
R23
W11
L±B24 HYB RI D VE HI CL E BA TTERY
BUSBER MODULE
L1
L2
B3
B4
W5
W6
R7
R8
G9
G10 O O
(
*2) (
*2)SERVICE PLUG O(
*2)
E DO(
*2)
1A1B
HYBRI D VEHI CLE BATTERY
BUSBER MODUL ESENSOR
O
(
*2)
HYBRI D VEHI CL E BATTERYB A H16 H17,
* 2 : High Voltage(
273. 6V)
ECEngine
compartment
leftW± BA B1 5
BATTERY BLOWER
MO TOR
B16
BAT TERY BLOWER
MOTOR CONTROL LER

2001 PRIUS (EWD414U)
MEMO

2001 PRIUS (EWD414U)
M OVERALL ELECTRICAL WIRING DIAGRAM
1
234
2 PRIUS(
Cont. next page)
1C
1D1B 215A
AM2 1J 9
2 1
3 5
2 1
3 5
15A
EFI
1K 31F11A10 1F 12 1F13 1A31A4 1A 2
1B2H 12D 9
15A
THRO1J 3 1A 8
14 IA1 4IA2
7 3
M
IG Cowl si de
panel RH IE Cowl si de
panel LHCA
ABC
E
M
N G
I
J
K D
3B 4B
1 2
5 3
EFI
REL AY CIR OPN
RELAY
2ACC
IG1
ST1
IG2
ST2 AM1 4
6 7AM2
5
2B11
2G
7. 5A OBDII5A AM1
2B 3
2 1
5 3 2D 6
10A GAUGE
2A 5
22 AB
H
L F
2C 5A
7. 5A ECU±B
1
2G 2
2C
B± G
W B±Y
W± G
W± L
R± GIG1 RELAY IG2 RELAY
B± YB±WG± RGR
L
G± RB± R G± RB
B R± W
W± BB±R
G±R
W±B W±BW±B
L W± R
B± WR±G
W± L
B
B± W
B± W
GR
G± R
R± W
G± R
G± R
GR± B
B
B
B± W
B
BB± W
120A MAI NBATTERY F18
FUSI BLE
LINK BLOCK
NO. 2 1
A A
A F11 F12,
FUSIBLE
LI NK BLOCK NO. 1BCDF13 , 100A
DC/ DCI15
IGNITION SW W±R
J 7
JUNCTI ON
CONNE CTOR
J 1
J UNCTI ON
CONNE CTORAF1 6
FUEL
PUMP
J17
JUNCTI ON
CONNE CTOR
JUNCTI ON
CONNECTORB A J 4 J 5,
19 IA1 CA B2B GR
11
4
A 7
A/ C AMPLI FI ER
MP2 + MPX + MPX + MPX ± 16
15GR± B
GR
B
DD
J26
J UNCTI ON CONNECTOR W±L
C1 0 C11,
COMB I NATI ON
METERAB
B 8
BODY ECU
Engine Control
2K 8
ID Cowl side
panel LHJ11
JUNCTI ON
CONNECTOR A2D 8
W± B
O
W±B
W±BW±B
Power Source
GR
MAL FUNCTI ON
INDICATOR LAMP
B±W
BL Near the
f uel tankA A
8BC1J18
J UNCTI ON
CONNE CTOR W± B
W±B
A
W±B W±B
14 A
IHRight kick panel 2A 7
2B 6
LBR