2001 TOYOTA PRIUS engine

2001 PRIUS (EWD414U)
ID 2C 9
B 11 2
B A
A A
2D 8
2K 8 B B
A E
W±B
W± B W±B W±BL±B L±B
L±BJUNCTION
CONNECTOR J27
UNLOCK WARNING SW U 1
JUNCTION CONNECTORB J24 A , J25
JUNCTION
CONNECTOR J11 12* 1 : W/ DAYTIME RUNNING LIGHT
* 2 : W/O DAYTIME RUNNING LIGHT
BODY ECUB B 8 , B 9A L
A 16
MPX±A 15
MPX+
GR
MPX2 MPX1 14
13
GR±L
MPD2 MPD14
11
B 2
BUZZERB 3A22 A21
GR
L
L GR ±B
MPX+MP2+4
1115A
DOME FROM POWER SOURCE SYSTEM (
SEE PAGE 50)
1J 7
2G 2
2A 4
L±Y GR ±B GR ±B
GR± B
ENGINE CONTROL
MODULE E10
GATEWAY ECU G 1
A/C AMPLIFIER A 7
COMBINATION METERB C10 , C11A
2A 7
2B 6A 14
IH
L BR
KSW

2001 PRIUS (EWD414U)
KEY REMINDER AND LIGHT REMINDER BUZZER
The current always flows from GAUGE fuse to body ECU TERMINAL 15.
1. LIGHT REMINDER BUZZER SYSTEM
If you open the door of the driver's side when either headlight or taillight is on with ignition SW being off, the buzzer comes
on.
2. KEY REMINDER BUZZER SYSTEM
If you open the door of the driver's side when the ignition key is inserted in ignition SW being off, the buzzer comes on.
B8 (A), B9 (B) BODY ECU
(B) 9±GROUND : Always approx. 12 volts
(A) 1±GROUND : Always continuity
12±GROUND : Continuity with the ignition key in cylinder
D6 DOOR COURTESY SW FRONT LH
1±GROUND : Closed with the driver's door open
C10 (A) COMBINATION METER
(A)22±GROUND : Approx. 12 volts with the ignition SW at ON position
(A)21±GROUND : Always approx. 12 volts
(A)14±GROUND : Always continuity
: PARTS LOCATION
CodeSee PageCodeSee PageCodeSee Page
A736E1036J13B37
B8A36F11B34J1737
B9B36F12C34J2037
C10A36F13D34J24A37
C11B36F1838J25B37
C1336G137J2737
D336J1137U137
D638J12A37
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CodeSee PageJunction Block and Wire Harness (Connector Location)
1B
1F27Engine Room Main Wire and Engine Room J/B (Engine Compartment Left)
1J
gg(g)
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)2H31Engine 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)
IA242Engine Room Main Wire and Cowl Wire (Cowl Side Panel LH)
IB142Floor Wire and Cowl Wire (Cowl Side Panel LH)
ID242Instrument Panel Wire and Cowl Wire (Left Kick Panel)
SYSTEM OUTLINE
SERVICE HINTS

2001 PRIUS (EWD414U)
SEAT BELT WARNING
10A
GAUGE FROM POWER SOURCE SYSTEM (
SEE PAGE 50)
2A 5
A 22 B 3 B 2 B 5 A 16 A15
A 14 B 3
IJ1 9
1 3
IJ1 10
A AB A
ID 2D 8
2K 8IJ1 11
B D
A E
A A4
11 13
1 A
2 A 14
4 11
W±B W±B
W±B W±B
W± B
W± B W±BW±B P±L P±L
G±OG±O GR ±BGR
G±O
GR±B
GR
LGR ±B
L
L GR±L
GR±L
MPD1
MPX+ MPX2
PKBL MPX± MPX+ DBKL MPX1MPD2
MP2+
A/C AMPLIFIER A 7
GATEWAY ECU G 1 ENGINE CONTROL MODULE E10
BODY ECUB B 8 , B 9A
COMBINATION METERB C10 , C11A
JUNCTION CONNECTOR J29
15
A
JUNCTION CONNECTORB J2 4 A , J25
JUNCTION CONNECTORB J2 2 A , J23BUCKLE SW RH AND
SEAT BELT WARNING
OCCUPANT DETECTION SENSOR B21
IJ1 8
G±O JUNCTION
CONNECTOR J11
15A
DOME
1J 7
L±Y
2A 42G 2
A 21
L SEAT BELT
(
FRONT
PASSENGER' S SEAT) BUCKLE SW LH B20
SEAT BELT
(
DRIVER' S SEAT)IG
IH 2A 7
2B 6
BR

2001 PRIUS (EWD414U)
When the driver has not fastened the seat belt while the ignition SW is ON, the driver seat belt warning light blinks, and a
warning buzzer comes on.
Also, in the front passenger seat, a sensor recognizes a passenger, and when the passenger has not fastened the seat belt,
the front passenger seat belt warning light blinks.
B20 BUCKLE SW LH
1±2 : Closed with driver's seat belt in use
: PARTS LOCATION
CodeSee PageCodeSee PageCodeSee Page
A736C10A36J22A37
B8A36C11B36J23B37
B9B36E1036J24A37
B2038G137J25B37
B2138J1137J2937
: 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)
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)
IJ144Floor No.3 Wire and Instrument Panel Wire (Under the Instrument Panel Center)
: GROUND POINTS
CodeSee PageGround Points Location
ID42Cowl Side Panel LH
IH42Right Kick Panel
SYSTEM OUTLINE
SERVICE HINTS

2001 PRIUS (EWD414U)
When the ignition SW is turned ON, the current flows from WIPER fuse to wiper and washer SW TERMINAL 17 and front
wiper motor TERMINAL 2 or the current flows from WASHER fuse to washer motor TERMINAL 2.
1. LO POSITION
When the wiper and washer SW is at LO position, the current flows from wiper and washer SW TERMINAL 17 to TERMINAL
7 to front wiper motor TERMINAL 5 to TERMINAL 4 to GROUND, and the front wiper motor runs at low speed.
2. HI POSITION
When the wiper and washer SW is at HI position, the current flows from wiper and washer SW TERMINAL 17 to TERMINAL
8 to front wiper motor TERMINAL 3 to TERMINAL 4 to GROUND, and the front wiper motor runs at high speed.
3. INT POSITION
When the wiper and washer SW is at INT position, the wiper relay is activated and the current flows from wiper and washer
SW TERMINAL 17 to TERMINAL 2 to GROUND. This current activates the intermittent circuit, and the current flows from
wiper and washer SW TERMINAL 17 to TERMINAL 7 to front wiper motor TERMINAL 5 to TERMINAL 4 to GROUND, and
operates the front wipers.
4. WASHER CONTINUOUS OPERATION
When the wiper and washer SW is pulled to WASHER position (Washer SW ON position), the current from the WASHER
fuse flows to washer motor TERMINAL 2 to TERMINAL 1 to wiper and washer SW TERMINAL 11 to TERMINAL 2 to
GROUND, and operates the washer motor to emit a water spray. At the same time, the current flows from the WIP fuse to
wiper and washer SW TERMINAL 17 to TERMINAL 7 to front wiper motor TERMINAL 5 to TERMINAL 4 to GROUND, and
operates the front wiper motor.
C12 FRONT WIPER AND WASHER SW
2±GROUND : Always continuity
7±GROUND : Approx. 12 volts with the front wiper and washer SW at LO position
Approx. 2 to 12 seconds intermittently with the front wiper and washer SW at INT position
8±GROUND : Approx. 12 volts with the front wiper and washer SW at HI position
16±GROUND : Approx. 12 volts with the ignition SW on unless the front wiper motor at STOP position
17±GROUND : Approx. 12 volts the ignition SW at ON or ST position
F9 FRONT WIPER MOTOR
2±1 : Closed unless the wiper motor at STOP position
: PARTS LOCATION
CodeSee PageCodeSee PageCodeSee Page
C1236J737W135
F934J1737
J137J1837
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CodeSee PageJunction Block and Wire Harness (Connector Location)
2G31Engine Room Main Wire and Instrument Panel J/B (Cowl Side Panel LH)
2I31Cowl Wire and Instrument Panel J/B (Cowl Side Panel LH)
2N31Floor 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)
IH142Floor Wire and Engine Room Main Wire (Left Kick Panel)
: GROUND POINTS
CodeSee PageGround Points Location
IE42Cowl Side Panel LH
IG42Cowl Side Panel RH
SYSTEM OUTLINE
SERVICE HINTS

2001 PRIUS (EWD414U)
HORN RELAY
5±3 : Closed with the horn SW on
: PARTS LOCATION
CodeSee PageCodeSee PageCodeSee Page
C1436H434J2037
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CodeSee PageJunction Block and Wire Harness (Connector Location)
1F27Engine Room Main Wire and Engine Room J/B (Engine Compartment Left)1J27Engine Room Main Wire and Engine Room J/B (Engine Compartment Left)
: CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS
CodeSee PageJoining Wire Harness and Wire Harness (Connector Location)
IA242Engine Room Main Wire and Cowl Wire (Cowl Side Panel LH)
SERVICE HINTS

2001 PRIUS (EWD414U)
POWER WINDOW
Communication between power window master SW and body ECU is controlled and body ECU recognizes the conditions of
each SW to control the operation of windows.
1. MANUAL UP OR DOWN OPERATION (DRIVER'S WINDOW, PASSENGER'S WINDOW)
During you are pushing power window master SW (Driver side) halfway down, the motor operates and the window on the
driver's side opens. During you are pulling power window master SW (Driver side) halfway up, the motor operates and the
windows on the driver's side closes. The window on the passenger's side opens or closes by pushing down or pulling up
power window master SW (Front passenger, rear passenger) or power window SW front RH, rear LH, RH.
2. AUTO UP OR DOWN OPERATION (DRIVER'S WINDOW)
When the power window master SW (Driver side) is fully pushed down, the motor operates and the window on the driver's
side automatically opens. When the power window master SW (Driver side) is fully pulled up, the motor operates and the
window on the driver's side automatically closes.
3. STOPPING AUTOMATIC WINDOW OPERATION
If you push the power window master SW (Driver side) halfway down during the window on the driver's side is raising
automatically, the motor's operation stops. And if you pull the power window master SW (Driver side) halfway up during the
window on the driver's side is lowering automatically, the motor's operation stops.
4. KEY OFF POWER WINDOW OPERATION
After the Ignition SW is turned off, the windows can be operated for about 43 seconds. However, the window operation stops
when either front doors opens.
5. JAM PROTECTION FUNCTION (DRIVER'S WINDOW)
When any foreign object gets caught during power window UP operation, the motor rotates in the opposite direction to open
the window.
P9 POWER WINDOW MASTER SW
1±GROUND : Always approx. 12 volts
4±GROUND : Approx. 12 volts with the ignition SW at ON position
9±GROUND : Always continuity
B8 (A), B9 (B) BODY ECU
15±GROUND : Approx. 12 volts with the ignition SW at ON position
(B)9±GROUND : Always approx. 12 volts
: PARTS LOCATION
CodeSee PageCodeSee PageCodeSee Page
B8A36J15B37P739
B9B36J1637P839
D436J1737P939
D638J2037P1039
D738J24A37P1139
J12A37J25B37P1239
J13B37J2737P1339
J14A37P639
: 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)
2C30Instrument Panel Wire and Instrument Panel J/B (Cowl Side Panel LH)2D30Instrument Panel Wire and Instrument Panel J/B (Cowl Side Panel LH)
2G31Engine Room Main Wire and Instrument Panel J/B (Cowl Side Panel LH)
2I
2J31Cowl Wire and Instrument Panel J/B (Cowl Side Panel LH)
2K
()
2L31Floor Wire and Instrument Panel J/B (Cowl Side Panel LH)
SYSTEM OUTLINE
SERVICE HINTS

2001 PRIUS (EWD414U)
: 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)
2C30Instrument Panel Wire and Instrument Panel J/B (Cowl Side Panel LH)2D30Instrument Panel Wire and Instrument Panel J/B (Cowl Side Panel LH)
2G31Engine Room Main Wire and Instrument Panel J/B (Cowl Side Panel LH)
2I
2J31Cowl Wire and Instrument Panel J/B (Cowl Side Panel LH)
2K
()
2L31Floor 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)
IB142Floor Wire and Cowl Wire (Cowl Side Panel LH)
IC142Front Door LH Wire and Cowl Wire (Left Kick Panel)
ID242Instrument Panel Wire and Cowl Wire (Left Kick Panel)
IF142Instrument Panel Wire and Floor Wire (Left Kick Panel)
IG142Front Door LH Wire and Instrument Panel Wire (Left Kick Panel)
IN144Front Door RH Wire and Instrument Panel Wire (Right Kick Panel)
IQ144Front Door RH Wire and Cowl Wire (Right Kick Panel)
BA146Rear Door No.2 Wire and Floor Wire (Center Pillar LH)
BB146Rear Door No.1 Wire and Cowl Wire (Center Pillar RH)
: GROUND POINTS
CodeSee PageGround Points Location
ID42Cowl Side Panel LH
IG42Cowl Side Panel RH
BI46Left Side of Rear Pillar
BJ46Right Side of Rear Pillar