engine TOYOTA PRIUS 2001 Service Manual PDF

2001 PRIUS (EWD414U)
COMBINATION METER
VFD
A 22 A21 A20 A12 B2
A 14 A2A3A1B7B6B1A9A11 10A
GAUGE FROM POWER SOURCE SYSTEM (
SEE PAGE 50)
2A 515A
DOME
1J 7
2A 42G 2
IP1 4IP15 2J 62J82J9 7. 5A
ECU±B
2C 5B 9A 15 B 16
2B 62A 7
IH14
4 8
351516
13
GR±L
L L W±G LG±RW±LL L L L BR
GR GR±L
GR± BBR±RY±BY
L±WL±Y
L LR±G L±Y LLR±G R±G
MPX+ MPX± FU± FU+
MPX1 MPX2 BFUA
COMBINATION METERB C10 , C11A BODY ECUB B 8 , B 9A
FUEL SENDER F16
ENGINE CONTROL
MODULE E10
ODO/TRIP SW
[HAZARD WARNING SW] H 8FROM BACK±UP
LIGHT RELAY
FROM BRAKE ECU TO L IGHT
CONTROL RHEOSTAT
FROM EMPS ECUY
Y±B
BR±R L±Y
L±R
FUEL
SENDER
SENSOR 20 11 19
A F
A FJUNCTION
CONNECTORJ27 A
EODOTC

2001 PRIUS (EWD414U)
BUZZERB 3A132B 7
2A 6A GAG B GBG
114
4 11
GR± LV±W V±W V±W
GR±L GR ±B GR
LV±W
MPX+ MPD1 MPD2
MP2+
C11 , A C10 B
COMBINATION METERA/C AMPLIFIER A 7
GATEWAY ECU G 1
JUNCTION
CONNECTORB J27 , J28AFROM HYBRID VEHICLE
CONTROL ECU
FROM ENGINE CONTROL MODULE
FROM NAVIGATION ECU
CHARGEOIL SEAT BELT
(
FRONT
PASSENGER' S SEAT) SEAT BELT
(
DRIVER' S SEAT) BRAKEHEAD DOOR
GA
FROM MULTI DISPLAY
V±W

2001 PRIUS (EWD414U)
COMBINATION METER
MALFUNCTION
INDICATOR LAMP
ABS
SRS
TURN L
TURN R
HIGH BEAM OUTPUT CONTROLWAT ER TEMP.
(
HIGH) WAT ER TEMP.
(
LOW) CRUISE
A 17 A 18 A 19 B 5
A 16 A 10 B 4
L L L GR± R B±YL G±R
COMBINATION METERB C10 , C11A
FROM HEADLIGHTS (
*1)
FROM DAYTIME RUNNING
LIGHT RELAY (
*2) FROM TURN SI GNAL
FLASHER RELAY TO ENGINE
CONTROL MODULE
TO BRAKE ECU
TO AIRBAG SENSOR
ASSEMBLY
10A
ACC FROM POWER SOURCE SYSTEM (
SEE PAGE 50)
2D 2
GR± R
A B
B C
B B
JUNCTION
CONNECTOR J26
JUNCTION
CONNECTORB J27 , J28AGR ±R
GR± R* 1 : W/O DAYTIME RUNNING LIGHT
* 2 : W/ DAYTIME RUNNING LIGHT

2001 PRIUS (EWD414U)
C10 (A), C11 (B) COMBINATION METER
(A)22±GROUND : Approx. 12 volts with the ignition SW at ON position
(B) 5±GROUND : Approx. 12 volts with the ignition SW at ON or ACC position
(A)21±GROUND : Always approx. 12 volts
(A)14±GROUND : Always continuity
: PARTS LOCATION
CodeSee PageCodeSee PageCodeSee Page
A736C11B36H837
B8A36E1036J2637
B9B36F1638J27A37
C10A36G137J28B37
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CodeSee PageJunction Block and Wire Harness (Connector Location)
1J27Engine Room Main Wire and Engine Room J/B (Engine Compartment Left)
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)
2J31Cowl 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)
IP144Instrument Panel Wire and Cowl Wire (Right Kick Panel)
: GROUND POINTS
CodeSee PageGround Points Location
IH42Right Kick Panel
SERVICE HINTS

2001 PRIUS (EWD414U)
RADIATOR FAN AND CONDENSER FAN
30A
RDI30A
CDS FAN FROM POWER SOURCE SYSTEM (
SEE PAGE 50)
32 51
32 51
1K 752 431
1J 51K51J12 1K 2 1K 3
IE E 5 M
1 2
M
2 1
IE1 7
A E
B A
1 2IE1 111J 45A
ECU±IG
2G 7
FAN NO. 1
RELAYFAN NO. 2
RELAYFAN NO. 3
RELAY
L±W
W±B
L±W
W±G
G±W
V±Y
B±Y
B±Y W± B
V±Y
RADIATOR FAN
MOTOR R 1
A/C CONDENSER FAN
MOTOR A 1
W± B
W±B
V±Y V±Y W±B
W± BA
A
A AA/C SINGLE
PRESSURE SW A 3
JUNCTION
CONNECTOR J 7WATER TEMP. SW W 4
JUNCTION
CONNECTOR J 1JUNCTION
CONNECTORB J27 , J28
A 1A 11
ENGINE CONTROL
MODULE E 7
4
LG
W± B A1J 10
IE1 6
R±W R±W
1
A/C
AMPLIFIER A 8 2 1
RF FAN
3 2

2001 PRIUS (EWD414U)
The radiator fan motor and A/C condenser fan motor operates according to the water temp. SW (Inverter), A/C single
pressure SW, and the A/C system condition. The FAN NO.1 relay, FAN NO.2 relay, FAN NO.3 relay are turned on/off, to
operate the fan motors at low speed (In series), or high speed (In parallel).
1. LOW SPEED OPERATION
When the water temp. SW (Inverter) is on, the radiator fan motor and A/C condenser fan motor operates at low speed.
2. HIGH SPEED OPERATION
When the water temp. SW (Inverter) is on, if the A/C system is operating A/C single pressure SW is on, the radiator fan motor
and A/C condenser fan motor operates at high speed.
A3 A/C SINGLE PRESSURE SW
3±2 : Close above approx. 15.2 kgf/cm2 (220 psi, 1520 kpa)
Open below approx. 12.3 kgf/cm2 (178 psi, 1230 kpa)
: PARTS LOCATION
CodeSee PageCodeSee PageCodeSee Page
A134J137R135
A334J737W435
A836J27A37
E736J28B37
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CodeSee PageJunction Block and Wire Harness (Connector Location)
1A27Engine Wire and Engine Room J/B (Engine Compartment Left)
1J27Engine Room Main Wire and Engine Room J/B (Engine Compartment Left)1K27Engine Room Main Wire and Engine Room J/B (Engine Compartment Left)
2G31Engine Room Main 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)
IE142Instrument Panel Wire and Engine Room Main Wire (Left Kick Panel)
: GROUND POINTS
CodeSee PageGround Points Location
IE42Cowl Side Panel LH
: SPLICE POINTS
CodeSee PageWire Harness with Splice PointsCodeSee PageWire Harness with Splice Points
E540Engine Room Main Wire
SYSTEM OUTLINE
SERVICE HINTS

2001 PRIUS (EWD414U)
AIR CONDITIONING
2F 6
A 11 A4D 14 D13 C23
D 3D22 B18
B 4B5IA2 5
1 2
C 5 C 6
M C 20 C18 C19 C22 C21
1 34 18
211
2 12345
L±O
GR±B
GR GR
GR±B
LG
P±G
BR W±G
W±G BR±W W W
W
W
W
W
W
GR±L
W
COMBINATION METER C11
GATEWAY ECU G 1
AMBIENT TEMP. SENSOR A 6 ENGINE CONTROL MODULEC E 8 B , E 9
MPX± MPD1 HRLY MPX+MPX±
MEO2 ACT E2
S5TS TS SGTPI S5TPI TPI AIF AIR MPX+ MPD2 MPX1 MPX2 TAM
MPX+ MP2+ NE ACT
D , E10 A/C SOLAR
SENSOR A11
AIR INLET CONTROL SERVO MOTOR A14 C , A 9 AA 8, A 7 B
A/C AMPLIFIER BODY ECUB 8 A
A 15A 16
IK1 2

2001 PRIUS (EWD414U)
A3 A/C DUAL PRESSURE SW
1±4 : Open with the refrigerant pressure at less than approx. 196 kpa (2.0 kgf/cm2, 28.4 psi),
or more than approx. 3140 kpa (32 kgf/cm2, 455 psi),
A7 (A), A8 (B), A9 (C) A/C AMPLIFIER
(A) 8±GROUND : Always approx. 12 volts
(A) 1±GROUND : Approx. 12 volts with the ignition SW at ON position
(A)24±GROUND : Always continuity
: PARTS LOCATION
CodeSee PageCodeSee PageCodeSee Page
A234B636J737
A334B736J1137
A634B8A36J22A37
A7A36C1136J23B37
A8B36E8B36J24A37
A9C36E9C36J25B37
A1036E10D36J27A37
A1136G137J28B37
A1236J137P3A37
A1436J2A37P4B37
A1536J3B37W235
A1636J637W435
: RELAY BLOCKS
CodeSee PageRelay Blocks (Relay Block Location)
324Engine Room R/B No.3 (Engine Compartment Right)
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CodeSee PageJunction Block and Wire Harness (Connector Location)
1A27Engine Wire and Engine Room J/B (Engine Compartment Left)
1F
1J27Engine Room Main Wire and Engine Room J/B (Engine Compartment Left)
1K
gg(g)
2C30Instrument Panel Wire and Instrument Panel J/B (Cowl Side Panel LH)2D30Instrument Panel Wire and Instrument Panel J/B (Cowl Side Panel LH)
2F31Engine Room Main Wire and Instrument Panel J/B (Cowl Side Panel LH)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)
IE142Instrument Panel Wire and Engine Room Main Wire (Left Kick Panel)
II144Instrument Panel Wire and A/C Sub Wire (Instrument Panel Brace LH)
IK144Engine Wire and Engine Room Main Wire (Right Kick Panel)
: GROUND POINTS
CodeSee PageGround Points Location
ID42Cowl Side Panel LHIE42Cowl Side Panel LH
SERVICE HINTS

2001 PRIUS (EWD414U)
AIR CONDITIONING
: SPLICE POINTS
CodeSee PageWire Harness with Splice PointsCodeSee PageWire Harness with Splice Points
E540Engine Room Main Wire

2001 PRIUS (EWD414U)
I GROUND POINT
IGCT RELAY
A/C TRIPLE
PRESSURE SW
HYDRAULIC BOOSTER
WATER PUMP MOTOR
(
A/C)
FRONT PARKING
LIGHT LH
FRONT PARKING
LIGHT RHIG2 RELAY
ENGINE HOOD
COURTESY SW
FRONT WI PER MOTOR
FRONT TURN
SIGNAL LIGHT LH
RADIATOR FAN MOTOR
ABS SOL
RELAY
INVERTER
(
GND1)
(
GND2)
PTC HEATER
BLOWER MOTOR
LINEAR CONTROLLER
(
E1)
(
SG)
(
E01)
(
E02) FRONT SIDE MARKER
LIGHT LH
FRONT SIDE MARKER
LIGHT RH
FRONT TURN
SIGNAL LIGHT RH
BRAKE FLUID LEVEL
WARNING SW
WATER TEMP. SW
DRL RELAY
IGNITION COIL AND
IGNITER NO. 1
IGNITION COIL AND
IGNITER NO. 2
IGNITION COIL AND
IGNITER NO. 3
IGNITION COIL AND
IGNITER NO. 4
ENGINE CONTROL
MODULE1K3
E 5
E 5
E 5
E 5 E 5
E 5
E 5
E 5 (
±S)
E 5
E 5
3HYDRAULIC BOOSTER E 5 E 5 (
CUT±)
E 1
E 1
E 1
E 1
E 1
E 1
3W±B
W±B
W±B
W±B
W±B
W±B
W±B
W±B
W±B
W±B
W±B
W±B
W±B
W±B
W± BW±B
W±B W±B W±B
W±B
W±B
W±B
W±B
W±B
W±B W±B W±B W± B W±B W± B W±B W±B W±B W±B
W±B W±B W±B W±B W±B
A
AA
(
*1)IE ECW± B
W± B
W± B
W± B
W± B
W± B W±BA
AA
A
AJUNCTION
CONNECTOR J 7
J 1
JUNCTION
CONNECTOR
W±B
A
BRAKE ECU
EAE 3 E 3 E 3
EBID214
IO114 A A
B A JUNCTION
CONNECTORB J 8 , J 9A W±B
W±B
W±B
W±B
W±B
W±BBR
BR
W±B
W±BBR BR
W±B W±B W±B
BR
ENGINE CONTROL
MODULE
ENGINE CONTROL
MODULE
(
ME01)
(
E03)DATA LINK
CONNECTOR 3 HTR RELAY
NAVIGATION ECU
RADIO AND PLAYER
IFIJ121
BR
BR
BR BR
MULTI DISPLAY (
*2)(
*2)
AIRBAG SENSOR
ASSEMBLY
COMBINATION
METER(
E1)
(
ES)
IH W±B
2B6 7
LBR
2A WATER PUMP
MOTOR (
INVERTER)
2W±B
FAN NO. 2
RELAY
AEFI RELAY