TOYOTA PRIUS 2001 Service Manual PDF

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)
6. MANUAL CANCEL CONTROL
When each of the following signals is input during driving with cruise control, the cruise control is released with turning the
cruise control requirement to 0. (The memorized speed is maintained when following signals except the signal, main switch
OFF is input.)
*Stop light switch ON (Pressing the brake pedal)
*Control switch's cancel switch ON
*Main switch OFF
7. AUTO CANCEL FUNCTION
A) The memorized speed is erased and the control is canceled if the following conditions occur. The power indicator blinks
at that time until the main switch is turned ON. The speed control is unavailable unless the main switch is turned ON
again.
*When the stop light switch breaks or short±circuits.
*When sudden change of the running speed signal occur.
B) The memorized speed is erased and the control is canceled if the following conditions occur.
*When the malfunction of the stop light switch input circuit occurs.
*When the running speed becomes slower than 40km/h.
*When the running speed becomes slower than the speed that 16 km/h subtracted from the memorized speed.
8. REGENERATIVE SYSTEM OPERATION
This system operates the motor as a generator to change the kinetic energy of the vehicle into the electricity when accel
pedal release or foot braking controls the vehicle, and store the electricity in the battery.
C14 CRUISE CONTROL SW [COMB. SW]
5±4 : Approx. 1540 W with CANCEL SW on
Approx. 240 W with RES/ACC SW on
Approx. 630 W with SET/COAST SW on
: PARTS LOCATION
CodeSee PageCodeSee PageCodeSee Page
A736H10C37J18A37
A1336H11A37J19B37
A1836H12B37J2137
B836H13E37J22A37
B1136H14D37J23B37
B1538H16A38J24A37
B1638H17B38J25B37
B17A38I9D35J2637
B18B38I10C35J27A37
B1938I11A35J28B37
C334I12B35J3238
C4A34I13E35A38
C5B34I14F35J33B38
C10A36I1537M2A35
C11B36I1738M3B35
C1436J137M4C35
D236J2A37P137
E9C36J3B37S337
E10D36J737S8A39
F1034J8A37S9B39
F12C34J9B37S10C39
F13D34J1137S11D39
F1738J1637S12E39
F1838J1737T437
G137J1837W335
SERVICE HINTS

2001 PRIUS (EWD414U)
TOYOTA HYBRID SYSTEM
: RELAY BLOCKS
CodeSee PageRelay Blocks (Relay Block Location)
223Engine Room R/B No.2 (Right Side of Reserve Tank)
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CodeSee PageJunction Block and Wire Harness (Connector Location)
1A27Engine Wire and Engine Room J/B (Engine Compartment Left)
1B
1F27Engine Room Main Wire and Engine Room J/B (Engine Compartment Left)1J27Engine Room Main Wire and Engine Room J/B (Engine Compartment Left)
1K
2A
2B30Instrument Panel Wire and Instrument Panel J/B (Cowl Side Panel LH)2C30Instrument Panel Wire and Instrument Panel J/B (Cowl Side Panel LH)
2D
2G31Engine Room Main Wire and Instrument Panel J/B (Cowl Side Panel LH)
2K31Cowl Wire and Instrument Panel J/B (Cowl Side Panel LH)
: CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS
CodeSee PageJoining Wire Harness and Wire Harness (Connector Location)
IA142Engine Room Main Wire and Cowl Wire (Cowl Side Panel LH)IA242Engine Room Main Wire and Cowl Wire (Cowl Side Panel LH)
IB142Floor Wire and Cowl Wire (Cowl Side Panel LH)
ID142Instrument Panel Wire and Cowl Wire (Left Kick Panel)
IE142Instrument Panel Wire and Engine Room Main Wire (Left Kick Panel)
IF142Instrument Panel Wire and Floor Wire (Left Kick Panel)IF242Instrument Panel Wire and Floor Wire (Left Kick Panel)
IH142Floor Wire and Engine Room Main Wire (Left Kick Panel)
IK144Engine Wire and Engine Room Main Wire (Right Kick Panel)
: GROUND POINTS
CodeSee PageGround Points Location
EC40Engine Compartment Left
ID42Cowl Side Panel LHIE42Cowl Side Panel LH
IG42Cowl Side Panel RH
IH42Right Kick Panel
BI46Left Side of Rear Pillar
BJ46Right Side of Rear Pillar
: SPLICE POINTS
CodeSee PageWire Harness with Splice PointsCodeSee PageWire Harness with Splice Points
E540Engine Room Main WireI844Engine Wire
I244Instrument Panel WireI944Engine Room Main Wire
I444Cowl WireB246Floor Wire

2001 PRIUS (EWD414U)
MEMO

2001 PRIUS (EWD414U)
ENGINE CONTROL
120A MAIN
1C 1
D 11B 215A
AM2 1J 92C 2
2G 176AM2 IG2
ST2
32 512B 5
2G 11
1J 3
1K 3
BL 1A 2
EA 15A
EFI
32 51
1F 11A10 1A31A4 13 25
1F 12 1F13
IA2 4IA114
7 3
IGA C
B AIA1 19 A
AA A
FUSIBLE LINK
BLOCK NO. 2 F18
JUNCTION CONNECTORB J 4 A , J 5FUSIBLE LINK
BLOCK NO. 1D F1 2 C , F13
W±BW±B W±B W±BB±G B W±R W±R
B±W B±W
B±W
B B G±RB±R G±R
B±R
B B
BB
W±B
B
B±W
B±W
R±W
G± R
G± R
B
B B±W
B±W
A C
FUEL PUMP F1 6
CIR OPN
RELAY
EFI
RELAY FROM POWER SOURCE SYSTEM (
SEE PAGE 50)
IGNITION SW I15
IG2
RELAY
JUNCTION
CONNECTOR J17B
BATTERY
JUNCTION
CONNECTOR J 7
JUNCTION
CONNECTOR J 1
A
A
JUNCTION
CONNECTOR
IEBC1 8
A
W±BJ18
W±B W±B
M

2001 PRIUS (EWD414U)
E 4E 4E 4E 4
E 3E 3E 3
I 7 I 7 I 7
A 14 A 13 A 12 A 25 A 11E 4
2 1
B 5 A C
B B
D 9
B 3B9C25 B4A29
2 1
I 7 I 7B 22 B10 B19
I 71 2
I 7B 14 14 14 14 14
432
15 32 32 32 32
IGNITION COIL AND
IGNITER NO. 1 I 1
IGNITION COIL AND
IGNITER NO. 2 I 2
IGNITION COIL AND
IGNITER NO. 3 I 3
IGNITION COIL AND
IGNITER NO. 4 I 4
INJECTOR NO. 1 I 5 ENGINE COOLANT TEMP. SENSOR E 1 VSV (
EVAP) V 2
MASS AIR FLOW METER M 1JUNCTION
CONNECTORB J24 A , J25
B±R
W
B±R
G
B±R
Y
B±R
Y Y±G B±W
B±W
W± B
B±W
W± B
B±W
W± B
B±W
W± B
B±W (
*1) R±B
G
R
(
*1)
W R±LB G±R
G±RR±WB±W
B±WB
B±W B±W B±W B±W B±WB
B±W
B B G±R G±R
BR BR
B
B
(
*1) B B
B B
B
BR BRB±R
B±R B±R B±RW±B W± B W±B W± B W± B
THW EVG VG THA EVP1 +B MREL FC BATT IGSW IGT1 IGF IGT2 IGT3 IGT4 # 10
1B 12
O 1
OIL PRESSURE SWY±B
MOPS E10 , D C , E 9 AE 8, E 7 B
ENGINE CONTROL MODULE
* 1 : SHIELDEDB

2001 PRIUS (EWD414U)
ENGINE CONTROL
2 1
B 62 1
A 1A1
2
2 E 4E 4E 4
1
I 7 IO1 9C 14
B BB 2
A CACACB 23 B21
I 7 IO1 15
BC1 3BC17BC14 C 22
I 7 B ABA
A C
BC1 5
BC1 2
C 11BC1 1
BC1 6
C 13 A7A8A30 12
1 1
134 23 1
1 2 3 22 2
B±R
L±W
R±W B±WB±W
B±W
V±W V±W BR
BR L±R Y±RY±R Y±RY±R
B±R
LLB±R B
BB
B
P
L (
*1)
BR BRL±R
BR
B
B BR
B
BBRBR BR B±WBBB
B±W B±W B±W
P
L (
*1)
THROTTL E
CONTROL MOTOR T 2
VAPOR PRESSURE SENSOR V 4
VSV (
CANISTER CLOSED VALVE) V 5 VSV (
PARGE FLOW SWITCHING VALVE) V 6NOISE FILTER
(
IGNITION) N 1 INJECTOR NO. 4 I 8 INJECTOR NO. 3 I 7 INJECTOR NO. 2 I 6
VACUUM SENSOR
(
HC ADSORBER AND
CATALYST SYSTEM) V 1
THROTTLE POSITION SENSOR T 3 JUNCTION
CONNECTORB J 8
A, J 9
JUNCTION
CONNECTORB J 4 A , J 5
VTA2 VTA PTNK VC HCLS
Y±RY±RGE01 M+ M± CCV TBP #40 #30 #20
(
*1)
(
*1) (
*1)
Y±RBR E10 , D C , E 9 AE 8, E 7 B
ENGINE CONTROL MODULE
VCC PTNK E2VTA2 VTA1
E2 VC

2001 PRIUS (EWD414U)
IO1 6
I 7C 20 B 18
I 7IK1 7IK16 IE1 1IE12 D 1D12
IK1 1IE1 22D 7 D 11
I 6
A DD 16
B EBEBE A 41 2
A 23 A24 C10 C18 C19 C28 C27
1
422
IE1 12 2
431
L P Y BRO Y±R
W± GLG
W± G B±W B±W
P±L
W
BRBR BR
B
BR
BR
Y
G± YBR(
*1)
BR BR
B
BB
B(
*1)
(
*1)
P±L
W P±L
W
(
*1)
(
*1)
(
*1)CAMS HAFT TIMING OIL
CONTROL VALVE C 2 VSV (
HC ADSORBER AND
CATALYST SYSTEM) V 3
HEATED OXYGEN SENSOR
(
BANK 1 SENSOR 1) H 3
HEATED OXYGEN SENSOR
(
BANK 1 SENSOR 2) H 9 BJUNCTION
CONNECTORB J22 A , J23
HT1B OX1 B E11 OX1A HT1A HCC E2SPHV
13HTE± HTE+ ETH+ ETH± OCV± OC V+ FAN
FROM FAN NO. 1 AND
FAN NO. 2 RE LAY
(
*1)
(
*1)(
*1)
(
*1) * 1 : SHIELDED
E10 , D C , E 9 AE 8, E 7 B
ENGINE CONTROL MODULE
I 6
(
*1)
BR D 5
V±W
SPD
TO COMBI NATION
METER
SPDO HTE± HTE+ ETH+ ETH1
D 6D29 D19 D28 D27
C 21
G
GO GO
B 10
C 16
R±Y
ESTP ESTP
D 8D 1 HYBRID VEHICLE CONTROL ECUD H12 , H14
B15A
STOP FROM POWER SOURCE SYSTEM (
SEE PAGE 50)
2K 9
1 2 DBEA
STOP LIGHT SW S 3JUNCTION
CONNECTORB J14 A , J15 G± W
G± W R± B
STPG±W
IA2 9
G

2001 PRIUS (EWD414U)
ENGINE CONTROL
2 1
2 1 I 7B 24 B16 A 10
EBA 21 A31
B A B A B AA A A A A AB 17
A AD 13 D 14 D 6 C 6C8 CE CE
CRANKSHAFT POSITION
SENSOR C 6 CAMSHAFT POSITION
SENSOR C 1
JUNCTION
CONNECTOR J16
GR GR±LG± R W± LP±B P±B
W±L R G GR
G G
BR
BR
BR (
*1)
(
*1)
BR
W± B
W± BBR BR
W±B
W±B G (
*1)(
*1)
(
*1)
(
*1) (
*1) (
*1)GR±LG± R W± LP±B
(
*1)
(
*1)
JUNCTION
CONNECTORB J 8 A , J 9
MPX2 MPX1 W SIL TC
E02 E01 E1 NE+ NE± G2ENGINE CONTROL MODULEB E 7 , E 8AE 9, C D, E10
A 28
EA1 1
1
B B KNOCK SENSOR K 1(
*1)
9A 3A
EA
W± B
W± BW±B
W±B
E03 ME01 FROM POWER SOURCE SYSTEM (
SEE PAGE 50)
15A
THRO
1A 8
A 6
+BM
GR GR
D 225
P±G
ACT NEO
LG
4
3D A/C AMPLIFIER A 8
KNK1
I 7I 7I 7
(
*1) (
*1) (
*1) NE ACT