Page 108 of 1943

2001 PRIUS (EWD414U)
INTERIOR LIGHT
B8 (A), B9 (B) BODY ECU
3±GROUND : Continuity with front LH door open
6±GROUND : Continuity with rear LH, RH door open
(A)14±GROUND : Continuity with front RH door open
(B) 9±GROUND : Always approx. 12 volts
L6 LUGGAGE COMPARTMENT LIGHT SW
1±GROUND : Closed with the luggage compartment door open
: PARTS LOCATION
CodeSee PageCodeSee PageCodeSee Page
A736D938J2737
B8A36E1036J30A38
B9B36G137J31B38
C10A36I1638J3338
C11B36J1137L538
D638J12A37L638
D738J13B37P539
D838J1637
: 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)
2K31Cowl Wire and Instrument Panel J/B (Cowl Side Panel LH)
2L31Floor 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)
IB142Floor Wire and Cowl Wire (Cowl Side Panel LH)
ID242Instrument Panel Wire and Cowl Wire (Left Kick Panel)
IF142Instrument Panel Wire and Floor Wire (Left Kick Panel)
: GROUND POINTS
CodeSee PageGround Points Location
ID42Cowl Side Panel LH
IH42Right Kick Panel
BI46Left Side of Rear Pillar
SERVICE HINTS
Page 112 of 1943
2001 PRIUS (EWD414U)
KEY REMINDER AND LIGHT REMINDER BUZZER
120A MAIN
1B 1C1
D 11B 1130A
HEAD
1 2
32 41
1F 823 15
7. 5A
TAI L10A
GAUGE FROM POWER SOURCE SYSTEM (
SEE PAGE 50)
2K 62H 1
B 2B11ID2 2 IA2 6
ID2 3
B 17 B18
IG ID2 5ID262K 1
B F
A D
IB1 3
1 16 7
E6
E
13 14
A17 15
T HR±W R±WW
B W B±G
LG LGR±G R±G R±G R±G R±W R
LG±R R
LG±R W±B
R±W R±W R±W
2
(
*1) (
*1) (
*1)
R±W
(
*2)
(
*2)
(
*2) (
*1)H
HRLY TRLYH±LP
TAI L REL AY HEAD RELAYSHORT PIN
JUNCTION
CONNECTOR J20DAYTIME RUNNING
LIGHT RELAY D 3
OFF
TAIL
HEAD
100A DC/DC
FUSIBLE LINK
BLOCK NO. 2 F1 8
FUSIBLE LINK
BLOCK NO. 1C F11 B , F1 2
JUNCTION
CONNECTORB J12 A , J13
DOOR COURTESY
SW FRONT LH D 6
JUNCTION
CONNECTOR J17LIGHT CONTROL SW
[COMB. SW] C13
D , F13
BATTERY3 (
*1)
(
*2)
(
*2)
(
*1)
BODY ECUB B 8 , B 9AL 7. 5A
ECU±B
2C 5 2A 5
R±G
B 9F F
R±G
JUNCTION
CONNECTOR J2 7
DCTYTAIL IG B
Page 114 of 1943

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
Page 126 of 1943

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
Page 129 of 1943
2001 PRIUS (EWD414U)
R5 REMOTE CONTROL MIRROR SW
8±GROUND : Approx. 12 volts with the ignition SW at ACC or ON position
6±7 : Continuity with the operation SW at UP or LEFT position
8±6 : Continuity with the operation SW at DOWN or RIGHT position
: PARTS LOCATION
CodeSee PageCodeSee PageCodeSee Page
J1137J2637R1039
J24A37J2737R1139
J25B37R537
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CodeSee PageJunction Block and Wire Harness (Connector Location)
2D30Instrument Panel 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)
IG142Front Door LH Wire and Instrument Panel Wire (Left Kick Panel)
IN144Front Door RH Wire and Instrument Panel Wire (Right Kick Panel)
: GROUND POINTS
CodeSee PageGround Points Location
ID42Cowl Side Panel LH
SERVICE HINTS
Page 132 of 1943
2001 PRIUS (EWD414U)
DOOR LOCK CONTROL
7. 5A
ECU±B FROM POWER SOURCE SYSTEM (
SEE PAGE 50)
2C 530A
DOOR
B 9
A A A AB A
ID 2D 8
2K 81 2B 1
2L 62K3
11 B F6
F
B
A 8
E B
W±B W±B
R±G
R±G
L±B
W±B L±B W±B W± B
W± B
R±G
R W±B
2C 912BODY ECUB B 8 , B 9A
UNLOCK WARNING SW U 1
JUNCTION
CONNECTOR J27
JUNCTION
CONNECTOR J27
JUNCTION
CONNECTOR J11
JUNCTION
CONNECTORB J24 , J25A
DOOR COURTESY SW
REAR LH D 8
DOOR COURTESY SW
REAR RH D 9
10A
GAUGE
15
A 5
IF1 2
1 2
BJ LUG
J33
JUNCTION
CONNECTORB B
W± B W±BL±B L±B L 4
LUGGAGE COMPARTMENT
DOOR UNLOCK SW
15A
DOME
1J 7
2G 2
2D 4
A B
B C
IG1 1L±Y JUNCTION
CONNECTORB J24 , J25A
L±Y L±Y L±Y L±Y
BIG
KSW RCTY
Page 133 of 1943
2001 PRIUS (EWD414U)
A 12
ID2 13
12K 1
A DAD B F
IB1 3
1A 6
IG1 5
IC1 7
LOCK UNLOCKM IG1 7B 10
IC1 5
IG1 2 13 16 15 6 10
A3
2 1 4 5 6
A18
3 AACTD RX PCTY
DCTY KUL KL LSWD
R±W
W± BG
R±W R±W
R±W
YY R±Y R±Y R±W R±WR±W
R±W
L±B
G±Y
W
R
GGR W± B W± B
R±W BODY ECUB B 8 , B 9A
2 JUNCTION
CONNECTORB J12 , J13APOWER WINDOW MASTER SW P 9
JUNCTION
CONNECTOR J16
DIODE
(
DOOR COURTESY) D 4 DOOR COURTESY SW
FRONT LH D 6 DOOR COURTESY SW
FRONT RH D 7
DOOR LOCK MOTOR, DOOR KEY LOCK AND
UNLOCK SW AND DOOR UNLOCK
DETECTION SW FRONT LH D13 MPX1
L±Y5
L±YCPUB DCTY
Page 134 of 1943
2001 PRIUS (EWD414U)
DOOR LOCK CONTROL
A CACAB
B B B A B B B A2I 42J1
IQ1 5IQ16 BB12 BB16
MM
IG BB1 1
A AB ABA IQ1 7M 2L 82L9
BA1 2 BA16 BB1 7ID2 12B BA BABA 18
BA1 7IF1 1 B 16 B7A17
IN1 2 IN1 12 IN1 11
42
A
A4 1 2 1 3 4 5 6 3 2 1 GUL2 L2 LSWPLSR
W± B W± B
W±BW± L
W± LR G W± LR GR G WG L±B
W± B
W± B W± B
W± B
W±L W± L
W±L R G W±L W± LR GR G
R G G WG L±B
916
JUNCTION CONNECTORB J14 , J15A
JUNCTION CONNECTORB J22 A , J23
BI BA1 13
W± B W± B
JUNCTION
CONNECTORB J18 , J19A
JUNCTION
CONNECTOR J17 DOOR LOCK MOTOR, DOOR KEY LOCK
AND UNLOCK SW AND DOOR
UNLOCK DETECTION SW FRONT RH D14
DOOR LOCK MOTOR AND
DOOR UNLOCK
DETECTION SW REAR RH D12
DOOR LOCK MOTOR AND
DOOR UNLOCK
DETECTION SW REAR LH D11 AB 9, B 8 B
BODY ECU
LOCK UNLOCK
ACT+ ACT±