2001 TOYOTA PRIUS air condition

2001 PRIUS (EWD414U)
J POWER SOURCE (Current Flow Chart)
FuseSystemPage
7.5AECU±B
Door Lock Control
EMPS
Gateway System
Headlight (w/ Daytime Running Light)
Hybrid Vehicle Immobiliser System
Interior Light
Key Reminder and Light Reminder Buzzer
Light Auto Turn Off
Power Window
Theft Deterrent
Wireless Door Lock Control134
164
160
80
78
108
11 4
104
126
146
140
7.5AOBDIIEngine Control
Theft Deterrent68
146
7.5ATAIL
Key Reminder and Light Reminder Buzzer
Light Auto Turn Off
Taillight11 4
104
88
10AACC
Combination Meter
Gateway System
Navigation System
Radio and Player
Remote Control Mirror
Shift Lock
SRS182
160
156
152
130
132
167
10AGAUGE
ABS
Air Conditioning
Back±Up Light
Combination Meter
Door Lock Control
EMPS
Engine Control
Headlight (w/ Daytime Running Light)
Key Reminder and Light Reminder Buzzer
Light Auto Turn Off
Navigation System
Power Window
Rear Window Defogger
Seat Belt Warning
Theft Deterrent
TOYOTA Hybrid System
Turn Signal and Hazard Warning Light
Wireless Door Lock Control172
188
102
182
134
164
68
80
11 4
104
156
126
180
11 8
146
54
96
140
10AHTRAir Conditioning188
10ASRS ACCSRS167
*These are the page numbers of the first page on which the related system is shown.

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
16 C 4A 5D 10C 18C 19C 28C 27C
From Hybr id Vehicle
Co nt r ol ECU< 1 ±9>
2 PRIUS (
Cont' d)
13
1416 153D 22D
See Air
Conditioning
System< 24±6>
1EA1
1
2 1
2 1 28 A 10 A 24 B 16 B
AA AA AA AA17 B 21 A 31 A 3 A 9 A
AB AB AB
D
E A
C
EB Engine block
EAEngine block11 ID2FA
HB
8ID1
8ID2
9ID1 10 ID2
(
*1)
(
*1)KNK1 G2 FAN SPD SPHV HTE±From FAN NO. 1 and
FAN NO. 2 Rel ay
< 22±3> To Combination Meter
< 23±2>
LG V± WO BRY
PL
R± Y
IDCowl si de
panel LH HTE+ ETH+ ETH±
NE± NE+ E1 E0 1 E0 2 E0 3 ME01
BBR G G R
G BR W±B W±B W±B W±B
BR W±B W±B W±B W±B
K 1
KNOCK SENSOR C 1
CAMSHAFT POSITION
SENSOR C 6
CRA NKS HAFT POSI TI ON
SENSORJUNCTION
CONNECTORB A J 8 J 9,
NEO ACT ESTP
(
*1)(
*1) (
*1)
R±G
B±W
B± WR±G
B± R B± W
R± G
B± W LG±BR± WL±B
W± B W± B
LG±BL±B
W±B
R± G
J11
JUNCTI ON
CONNECTOR T 4
TRANSPONDER
KEY COMPUTER
EB
AA
7B 8C
IF Left kick panel
RADI O A ND PL AYE RC B R 3 R 4,
C 7
CENTER CLUSTER
SW
I ND GND CTY KSWIG +BD HEVC
To Hybrid Vehic le
Control ECU< 1±20>To Door Court esy SW
Front LH< 10±2> To Unloc k Warning
SW< 9±2> < 15±3>
6A
A 4A
J27 J28,
JUNCTION
CONNECT ORAB
J10
JUNCTI ON
CONNECTOR
2138
51267LG±BBRBR
A
A
J20
J UNCTI ON
CONNE CTOR JUNCTI ON CONNECTORB A J27 J28,
* 1 : Shielded
Engine ControlHybrid Vehicle Immobiliser System
BB±R
E 7 E 8,
E NGI NE CONTROL MODULEAB
(
*1)
BR BR
(
*1) (
*1) R± G
E 9 , C E10, D
B±R
23 C
TAM
BR
(
*1) (
*1)B
B
L±BJ20
J UNCTI ON
CONNECTOR 21 C
GO
G
9IA2
G

2001 PRIUS (EWD414U)
M OVERALL ELECTRICAL WIRING DIAGRAM
1
234
24 PRIUS(
Cont. next page)
2ACC
IG1
ST1 AM1 4
1
120A MAIN
1B 1A
1D2H 1
30A HTR2
2 1
3 52B 3 2D 6
IDCowl side
panel LH 2K 8
33
A
W±GW
B
B± G
W± G
J11
JUNCTI ON
CONNECTOR
100A DC/DCBATTERYF18
FUSI BLE L I NK
BLOCK NO. 2F10 F11,
FUSIBLE LINK
BL OCK NO. 1ABF13, DIG1
RE LAY
1B 32 1
3 5
4
2 1
3 5
1K 81J13 1A51F31K3 1F 410A
HTR2C 5
2D 3 82G
10A GAUGE 7. 5A ECU±B
W 50A HTR
B±Y
30A HTR1
3
50A HTR3
3
WA
B
C
AA AA
AB
2 1
M
A
IECowl si de
panel LH
W±B
J 1
JUNCTI ON
CONNECTOR3A 11B 3B
21 IE1 15 IE1 20 IE1
3
2 1
5 3 3
3 3
1 2
M1A
CA CA
AB
13 IE110 B
8IE1E
7A
AB
AAD
8A
F
Air Conditioning
123
AA4
B
BF 2
222
11
5A AM1
4
A1BFB± R
G±W
G
R±L
L±O
B±L
W± BL
L±RW±B R
L±YLG±R
V R
G
G± W
B± RB±W B± RB±RV
B± R L±OB±L LG±RR W± B W± BW± B W± B R R
R LG±RV L±YR L±R
R± G R± GL±Y L±R
RA 7 A 8,
A/ C AMPLI FI ERAB
11
R± L
HTR
RELA YCLR MG
RELAY
J 2 J 3,
JUNCTI ON
CONNECTORAB
B 6
BL OWER
MOT OR
B 7
BLOWER MOTOR
L I NEA R CONTROL LER
AJ 7
JUNCTION
CONNECTORMGC BL W PS W I G WP+B
A 3
A / C DUAL
PRESSURE SW J 6
JUNCTI ON
CONNECTOR
W 2
WATER PUMP
MOTOR (
A/C)
R
J22 J23,
JUNCTI ON
CONNECTORABJ27
JUNCTI ON
CONNECTOR
C , A 9
W± B W± BGND
JUNCT I ON CONNECTORB A J24 J25,
W±B R
2D 8W± B
A/ C W/ P
REL AY
A
AJ 6
JUNCTION
CONNECTOR
V I15
IGNITION
SW
Power Source
GND VM +B SI

2001 PRIUS (EWD414U)
M
78
6 5
(
Cont. next page)
24 PRIUS (
Cont' d)
9B 18B
4IE1 5IE1
4IK1 5IK1 A
B
C
EA
B
C
2F 615 A 16 A
11 A 4 A 5 B4B13 D 14 D 23 C
3D 22D 18BIA25
1 2
F2B 6C 5C17 C 15 C 16 C 14 C 13 C
6 II1 8 II1 7 II1 9 II1 10 II1
M 20 C C18 19 C 22 C 21 C
M DD
Air Conditioning
B A
A/ C AMPLI FI ER, A 8 A 7 A 9, C4C 1B 3C 1C 2C2 1
1 2 18
34
1 211
1422
12345 12345 B±R
G±W
G
R±L
L±O
B± LGR± LW±G
BRW±G
BR± WB± R
G±W
G
R±L
GR± B GRGR± BLG P±G R±WW
W W W
W± L BR±W
W± L BR±W
W±L BR± W V± YW W W W
W
W
W W W
W
W
W
W± R BR±YY±RL BR±R
B 8
BODY ECUA
E 8 E 9,
ENGI NE CONTROL MODULEBC
A10
A/ C ROOM
TEMP. SENSOR A12
A/ C THERMI STOR
Fr om FAN NO. 1 and
FA N NO. 2 Rel ay< 22± 4>
LOCK SGLOCK CF S5TS TS SGTPI S5 TPI TPI AI F AI R S5 TP SGTP TP AMC AMHMP X+ MP2 + NE A CTRF TR SGTR TE SGTE
A 2
A/C MAGNETIC
CLUTCH AND
L OCK SENSORMP X+ MPD2 MPX 1 MPX 2 TA M
MP X± MPD1 NEO A CT E 2
GR
, DE10 A 6
AMBI ENT
TEMP.
SENSOR
A11
A/C SOLAR
SENSOR C11
COMBINATION
METE RG 1
GATE WAY
ECU
IK12
Fr om FAN NO. 3 Rel ay
< 22±4>
A1 5
AI R MI X CONTROL SE RVO MOTOR A1 4
AI R I NLE T CONTROL S ERVO MOTOR IDH
Y
10 A
Fr om Conv erter
< 1±13>
MP X+ MPX ± HRLY

2001 PRIUS (EWD414U)
M OVERALL ELECTRICAL WIRING DIAGRAM
11 12
10 9
24 PRIUS (
Cont' d)A
B
C
7C C98C10C11C
5 II1 3 II1 4 II1 2 II1 1 II1
M D
33 33 33
2 1
5 3
1 2
5 3
2 1
5 3
33 33 33
18 IE1 16 IE1 13 B 6B
1IA1 5IA1
IDCo wl s ide
panel LH IECowl side
panel LH
Air Conditioning
C , A 9 A 7 A 8,
A/C AMPLIFIERAB B±R
G±W
G
R±L
P
P± BR±L R±L
P±B
G± R
W W
W
W
W
W BR±WGR±LR Y± B P L±R
R± LG G± WB± R
L±Y
P± B P± BW± B W± B
W±B W±B
W±B
AAA 12345
J 1
JUNCTION
CONNECTORJ11
JUNCTI ON
CONNECTOR S5TPM SGTPM TPM AOF AOD HTRO HTR2BSET TSET MSET PI G5 PSG SW
A/ CSW
F/RSW
RDEFSW
FULL
A/ CPI G LED
A/ CLED
F/RLED
RDE FLED
FULL
A/CHTR3
RE LAYHTR2
REL AYHTR1
REL AY
A1 6
AI R VENT MODE CONTROL S ERVO MOT OR1A 3B 1B
2B 4B 2AP 3 P 4,
P TC HEA TERAB

NEW MODEL OUTLINE
Gasoline engine + AC motor = TOYOTA Hybrid System (THS)
Tremendous improvement in fuel efficiency & clean achieved!
Inverter1NZ-FXE
engine
P111 Hybrid transaxleHV battery182MO11182MO12
Hybrid transaxle
13
TOYOTA Hybrid System (THS)
The TOYOTA hybrid system has two drive sources, one is the gasoline engine and the other, the AC motor.
The power train system selects the best combination of the different characteristics of both depending on
driving conditions. Also, through the adoption of a regenerative braking system, which recovers energy
during deceleration and ªidling stopº whereby the engine is stopped during idling, we have been able to
provide for maximum energy conservation. This has resulted in a vastly superior fuel economy compared
with that of gasoline A/T vehicles of the same displacement.
Features of the System
1. Optimum distribution of drive sources
The most efficient engine operating zone is automatically selected by controlling the optimum distribution of the engine and motor
drive energy sources.
2. Reduced energy loss
The engine is automatically stopped when starting and travelling at low load to reduce fuel consumption.*1
The kinetic energy that used to be lost through engine or foot braking is recovered by the regenerative braking system and used
for recharging, thereby contributing to improved fuel efficiency. When the driver applies the brakes, the hydraulic and regenera-
tive braking systems are coordinated. In order to recover more energy, a higher proportion of regenerative braking is used.
3. Not required for recharging from an external source
The system uses MG1 (Motor Generator No.1) and MG2 (Motor Generator No.2) to maintain a constant battery charge, so unlike
an electric vehicle, recharging from an external source is not required.
*1 : In some cases, the engine does not stop, depending on the air conditioner and HV battery (Hybrid Vehicle Battery) status.
System configuration
P111 HYBRID TRANSAXLE
Fitted with built-in THS transaxle MG1 (Motor Generator No.1), MG2 (Motor Generator No.2), power spliting device and reduction
gears for the hybrid system. These function to switch engine operation to MG2 assistance, HV battery charging and power generation
for driving MG2.
Inverter
This controls the current between MG1, MG2 and HV battery and converts DC/AC power.
HV Battery (Hybrid Vehicle Battery)
This supplies power to the motor at full load or on engine stopping and stores power recovered by regenerative braking or power
generation by MG1. 228 nickel-metal hydride batteries are connected in series to obtain a voltage of 273.6 V DC.

NEW MODEL OUTLINE
MAIN MECHANISM
182MO13
182MO14
182MO15
182MO16
182MO17
14
THS operation
Starting and traveling at low load
When the engine efficiency is low such as when starting,
traveling at low load or the engine is stopped, permitting
travel by MG2; (however the engine may start under
SOC (State Of Charge) of the HV battery.)
Normal traveling
The engine energy is divided into two. One portion
directly drives the wheels. The other portion drives
MG1 to drive MG2 by generated power, which also
drives the wheels.
Full acceleration
In addition to the 2-way system for normal travelling,
the drive power of MG2 is further supplemented by the
power stored in the HV battery, resulting in powerful
and smooth acceleration.
Deceleration or braking
The wheels drive MG2 which acts as the generator for
regenerative power generation. The power recovered
by generation is stored in the HV battery.
Stopped
When the vehicle is stopped, the engine stops automat-
ically. However, when it is necessary to charge the HV
battery or to run the air conditioner compressor, the
engine will not stop.