Page 9 of 1943

2001 PRIUS (EWD414U)
B
The ºCurrent Flow Chartº section, describes which parts each power source (fuses, fusible links, and circuit breakers)
transmits current to. In the Power Source circuit diagram, the conditions when battery power is supplied to each system
are explained. Since all System Circuit diagrams start from the power source, the power source system must be fully
understood.
Theft Deterrent and Door Lock Control
J POWER SOURCE (Current Flow Chart)
11
1
EA1 1EA2 3
7
EB16
E 6
E 7I 2I 2
I 2
E 7
E 7
E 7
2
1
1
2
2
2
2
2
B
B
W W
B B B B BW±B
B
B
B B±O
B±W
W±B
B±W STARTER RELAY INJECTION RELAY15A HAZ±RADIO7.5A AM250A MAIN 1.25B FL MAIN
BATTERY
WWW
W W W
R W±L
W
W
G±W
G
15A TAIL
20A DEFOG
15A RAD CIGTA I L
RELAY 7.5A DOME 40A DOOR LOCK CB
2 1
1 2
4 8
2 3
3 4
G
W±R
P±L B±Y
B±Y
W±R
AM2 IG2
ACC
IG1AM1W W
W±R
W W
W±B
21
1
1
1
1
2
2
2
2
3
4
3
4 1
2
1
22
1
11
1
IGNITION SW I 8
Battery
30A AM2
2
Starter S 220A RADIO NO.1
10A HORN
15A EFI
7.5A DOMEShort Pin
10A HAZARD
The chart below shows the route by which current flows from the battery to each electrical source
(Fusible Link, Circuit Breaker, Fuse, etc.) and other parts.
Engine Room R/B (See Page 20)
ABS
ABS and Traction Control
Cruise Control
Electronically Controlled Transmission and A/T Indicator
Multiplex Communication System
Cigarette Lighter and Clock
Key Reminder and Seat Belt Warning STOP
Fuse Page
194
214
11 2
System
DOME 20A
10ACombination Meter
Headlight
Interior Light
2
2
6 100A ALT
EB1
POWER SOURCE
Light Auto Turn Off187
180
166
210
230
122
10A ECU±B
5 60A ABS
2
6 Fusible Link Block2
*The system shown here is an EXAMPLE ONLY. It is different to the actual circuit shown in the SYSTEM CIRCUITS SECTION.
Page 10 of 1943
![TOYOTA PRIUS 2001 Service Repair Manual BLACK
[D]
K CONNECTOR LIST
J4 K1 K2 L1
L2 L3 L4 M1 M2 M3
M4 N1 N2 O1 O2DARK GRAY
GRAY
DARK GRAY BLACK GRAY GRAY
ABB
AABCCCDD
DDA
AA
AA
A AA1
1212
11
2
1
212 3
6 7 8 9 1 0 111 245
7 12
3456 8
4 32 1
1 TOYOTA PRIUS 2001 Service Repair Manual BLACK
[D]
K CONNECTOR LIST
J4 K1 K2 L1
L2 L3 L4 M1 M2 M3
M4 N1 N2 O1 O2DARK GRAY
GRAY
DARK GRAY BLACK GRAY GRAY
ABB
AABCCCDD
DDA
AA
AA
A AA1
1212
11
2
1
212 3
6 7 8 9 1 0 111 245
7 12
3456 8
4 32 1
1](/manual-img/14/57461/w960_57461-9.png)
BLACK
[D]
K CONNECTOR LIST
J4 K1 K2 L1
L2 L3 L4 M1 M2 M3
M4 N1 N2 O1 O2DARK GRAY
GRAY
DARK GRAY BLACK GRAY GRAY
ABB
AABCCCDD
DDA
AA
AA
A AA1
1212
11
2
1
212 3
6 7 8 9 1 0 111 245
7 12
3456 8
4 32 1
123234
8910 56 1
712
11
[A]
[C] [B]
J3
1212
67812A
AA
A AAABB
AABCCCDD
DD
I14 I15 I16 J1 J2DARK GRAY GRAY BLACK
2001 PRIUS (EWD414U)
B HOW TO USE THIS MANUAL
[A]: Indicates connector to be connected to a part. (The numeral indicates the pin No.)
[B]: Junction Connector
Indicates a connector which is connected to a short terminal.
Junction Connector
Short Terminal Same Color
Junction connector in this manual include a short terminal which is
connected to a number of wire harnesses. Always perform
inspection with the short terminal installed. (When installing the
wire harnesses, the harnesses can be connected to any position
within the short terminal grouping. Accordingly, in other vehicles,
the same position in the short terminal may be connected to a wire
harness from a different part.)
Wire harness sharing the same short terminal grouping have the
same color.
[C]: Parts Code
The first letter of the code is taken from the first letter of part, and the numbers indicates its order in parts which
start with the same letter.
[D]: Connector Color
Connectors not indicated are milky white in color.
Page 11 of 1943
![TOYOTA PRIUS 2001 Service Repair Manual 2001 PRIUS (EWD414U)
B
[A]: Part Code
[B]: Part Name
[C]: Part Number
Toyota Part Number are indicated.
Not all of the above part numbers of the connector are established for the supply. In case of or TOYOTA PRIUS 2001 Service Repair Manual 2001 PRIUS (EWD414U)
B
[A]: Part Code
[B]: Part Name
[C]: Part Number
Toyota Part Number are indicated.
Not all of the above part numbers of the connector are established for the supply. In case of or](/manual-img/14/57461/w960_57461-10.png)
2001 PRIUS (EWD414U)
B
[A]: Part Code
[B]: Part Name
[C]: Part Number
Toyota Part Number are indicated.
Not all of the above part numbers of the connector are established for the supply. In case of ordering a connector
or terminal with wire, please confirm in advance if there is supply for it using
ªParts Catalog Newsº (published by
Parts Engineering Administration Dept.).
A 5
90980±11194
L PART NUMBER OF CONNECTORS
Code Part Name Part NumberCode Part NamePart Number
A 1
A 2
A 4
A 6
A 7A/C Ambient Temp. Sensor
A/C Condenser Fan Motor
A/C Triple Pressure SW (A/C Dual and
Single Pressure SW)
A/T Oil Temp. Sensor
ABS Actuator
ABS Actuator90980±11070
90980±11237
90980±10943
90980±11413
90980±11151D 4
D 5
D 6
D 7
D 8
D 9
D10
D11Diode (Door Courtesy Light)
Diode (Key Off Operation)
Diode (Luggage Compartment Light)
Door Lock Control Relay
Door Courtesy Light LH
Door Courtesy Light RH
Door Courtesy SW LH
Door Courtesy SW RH90980±11608
90980±10962
90980±11608
90980±10848
90980±11148
90980±11097
A 8ABS Speed Sensor Front LH
90980±10941
A 9ABS Speed Sensor Front RH
90980±11856 A10Airbag Sensor Front LH
A11Airbag Sensor Front RHD12Door Courtesy SW Front LH
90980±11156 D13Door Courtesy SW Front RH
D14Door Courtesy SW Rear LH
Door Courtesy SW Rear RH
D15
[B] [C]
A12
Auto Antenna Motor90980±11194 A 3
A/C Condenser Fan Relay90980±10940
[A]
90980±11009
90980±11002
D16
D17Door Key Lock and Unlock SW LH
Door Key Lock and Unlock SW RH90980±11170
Page 12 of 1943
![TOYOTA PRIUS 2001 Service Repair Manual To Ignition SW
IG Terminal
Fuse
Voltmeter SW 1
Relay
SW 2Solenoid[A]
[B]
[C]
Ohmmeter
SW
Ohmmeter
Diode
Digital Type Analog Type
2001 PRIUS (EWD414U)
C TROUBLESHOOTING
VOLTAGE CHECK
(a)Establish cond TOYOTA PRIUS 2001 Service Repair Manual To Ignition SW
IG Terminal
Fuse
Voltmeter SW 1
Relay
SW 2Solenoid[A]
[B]
[C]
Ohmmeter
SW
Ohmmeter
Diode
Digital Type Analog Type
2001 PRIUS (EWD414U)
C TROUBLESHOOTING
VOLTAGE CHECK
(a)Establish cond](/manual-img/14/57461/w960_57461-11.png)
To Ignition SW
IG Terminal
Fuse
Voltmeter SW 1
Relay
SW 2Solenoid[A]
[B]
[C]
Ohmmeter
SW
Ohmmeter
Diode
Digital Type Analog Type
2001 PRIUS (EWD414U)
C TROUBLESHOOTING
VOLTAGE CHECK
(a)Establish conditions in which voltage is present at the check
point.
Example:
[A] ± Ignition SW on
[B] ± Ignition SW and SW 1 on
[C] ± Ignition SW, SW 1 and Relay on (SW 2 off)
(b)Using a voltmeter, connect the negative lead to a good ground
point or negative battery terminal, and the positive lead to the
connector or component terminal.
This check can be done with a test light instead of a voltmeter.
CONTINUITY AND RESISTANCE CHECK
(a)Disconnect the battery terminal or wire so there is no voltage
between the check points.
(b)Contact the two leads of an ohmmeter to each of the check
points.
If the circuit has diodes, reverse the two leads and check
again.
When contacting the negative lead to the diode positive side
and the positive lead to the negative side, there should be
continuity.
When contacting the two leads in reverse, there should be no
continuity.
(c)Use a volt/ohmmeter with high impedance (10 kW/V
minimum) for troubleshooting of the electrical circuit.
Page 13 of 1943
![TOYOTA PRIUS 2001 Service Repair Manual To Ignition SW
IG Terminal
Test Light
Relay Light
SW 2 SolenoidDisconnectShort [A]
Disconnect
DisconnectSW 1Fuse Case
Short [B]
Short [C]
Pull Up
Press Down Press DownPull Up
2001 PRIUS (EWD414U)
C
FI TOYOTA PRIUS 2001 Service Repair Manual To Ignition SW
IG Terminal
Test Light
Relay Light
SW 2 SolenoidDisconnectShort [A]
Disconnect
DisconnectSW 1Fuse Case
Short [B]
Short [C]
Pull Up
Press Down Press DownPull Up
2001 PRIUS (EWD414U)
C
FI](/manual-img/14/57461/w960_57461-12.png)
To Ignition SW
IG Terminal
Test Light
Relay Light
SW 2 SolenoidDisconnectShort [A]
Disconnect
DisconnectSW 1Fuse Case
Short [B]
Short [C]
Pull Up
Press Down Press DownPull Up
2001 PRIUS (EWD414U)
C
FINDING A SHORT CIRCUIT
(a)Remove the blown fuse and disconnect all loads of the fuse.
(b)Connect a test light in place of the fuse.
(c)Establish conditions in which the test light comes on.
Example:
[A] ± Ignition SW on
[B] ± Ignition SW and SW 1 on
[C] ± Ignition SW, SW 1 and Relay on (Connect the
Relay) and SW 2 off (or Disconnect SW 2)
(d)Disconnect and reconnect the connectors while watching the
test light.
The short lies between the connector where the test light
stays lit and the connector where the light goes out.
(e)Find the exact location of the short by lightly shaking the
problem wire along the body.
CAUTION:
(a) Do not open the cover or the case of the ECU unless
absolutely necessary. (If the IC terminals are touched,
the IC may be destroyed by static electricity.)
(b) When replacing the internal mechanism (ECU part) of
the digital meter, be careful that no part of your body or
clothing comes in contact with the terminals of leads
from the IC, etc. of the replacement part (spare part).
DISCONNECTION OF MALE AND FEMALE
CONNECTORS
To pull apart the connectors, pull on the connector itself, not
the wire harness.
HINT : C h e c k t o s e e w h a t k i n d o f connector you are
disconnecting before pulling apart.
Page 14 of 1943
![TOYOTA PRIUS 2001 Service Repair Manual 10
3
0.2
11
(mm) Reference:
Tool Up Example:
(Case 1)
Terminal Retainer
Terminal Retainer
[Retainer at Full Lock Position]
[Retainer at Temporary Lock Position]StopperTerminal
Retainer
Secondary
Locki TOYOTA PRIUS 2001 Service Repair Manual 10
3
0.2
11
(mm) Reference:
Tool Up Example:
(Case 1)
Terminal Retainer
Terminal Retainer
[Retainer at Full Lock Position]
[Retainer at Temporary Lock Position]StopperTerminal
Retainer
Secondary
Locki](/manual-img/14/57461/w960_57461-13.png)
10
3
0.2
11
(mm) Reference:
Tool Up Example:
(Case 1)
Terminal Retainer
Terminal Retainer
[Retainer at Full Lock Position]
[Retainer at Temporary Lock Position]StopperTerminal
Retainer
Secondary
Locking Device Example:
(Case 2)
2001 PRIUS (EWD414U)
C TROUBLESHOOTING
HOW TO REPLACE TERMINAL
(with terminal retainer or secondary locking device)
1.PREPARE THE SPECIAL TOOL
HINT : To remove the terminal from the connector, please
construct and use the special tool or like object shown on
the left.
2.DISCONNECT CONNECTOR
3.DISENGAGE THE SECONDARY LOCKING DEVICE OR
TERMINAL RETAINER.
(a)Locking device must be disengaged before the terminal
locking clip can be released and the terminal removed from
the connector.
(b)Use a special tool or the terminal pick to unlock the secondary
locking device or terminal retainer.
NOTICE:
Do not remove the terminal retainer from connector body.
[A] For Non±Waterproof Type Connector
HINT : The needle insertion position varies according to the
connector's shape (number of terminals etc.), so
check the position before inserting it.
ºCase 1º
Raise the terminal retainer up to the temporary lock
position.
ºCase 2º
Open the secondary locking device.
Page 15 of 1943
![TOYOTA PRIUS 2001 Service Repair Manual Tool
Ta b
Ta b
Terminal
Retainer
Access Hole
( Mark)Tool
Tool
[Female] Example:
[Male] (Case 1)
[Male] [Female]Retainer
at Full Lock Position
Retainer
at Temporary Lock Position
Terminal Retaine TOYOTA PRIUS 2001 Service Repair Manual Tool
Ta b
Ta b
Terminal
Retainer
Access Hole
( Mark)Tool
Tool
[Female] Example:
[Male] (Case 1)
[Male] [Female]Retainer
at Full Lock Position
Retainer
at Temporary Lock Position
Terminal Retaine](/manual-img/14/57461/w960_57461-14.png)
Tool
Ta b
Ta b
Terminal
Retainer
Access Hole
( Mark)Tool
Tool
[Female] Example:
[Male] (Case 1)
[Male] [Female]Retainer
at Full Lock Position
Retainer
at Temporary Lock Position
Terminal Retainer
[Male]Press Down
[Female]Press DownTool
Tool Example:
(Case 2)
2001 PRIUS (EWD414U)
C
[B] For Waterproof Type Connector
HINT : Ter m inal ret ainer color is diff er ent
according to connector body.
Example:
Terminal Retainer
: Connector Body
Black or White : Gray
Black or White : Dark Gray
Gray or White : Black
ºCase 1º
Type where terminal retainer is pulled
up to the temporary lock position (Pull
Type).
Insert the special tool into the terminal
retainer access hole (Mark) and pull
the terminal retainer up to the
temporary lock position.
HINT : The needle insertion position varies
according to the connector 's shape
(Number of terminals etc.), so check
the position before inserting it.
ºCase 2º
Type which cannot be pulled as far as
Power Lock insert the tool straight into
the access hole of terminal retainer as
shown.
Page 16 of 1943
Retainer at
Full Lock Position
[Male] [Female] Retainer at
Temporary Lock Position
Locking Lug
Tool
2001 PRIUS (EWD414U)
C TROUBLESHOOTING
Push the terminal retainer down to the temporary lock position.
(c)Release the locking lug from terminal and pull the terminal out
from rear.
4.INSTALL TERMINAL TO CONNECTOR
(a)Insert the terminal.
HINT:
1. Make sure the terminal is positioned correctly.
2. Insert the terminal until the locking lug locks firmly.
3. Insert the terminal with terminal retainer in the temporary lock
position.
(b)Push the secondary locking device or terminal retainer in to
the full lock position.
5.CONNECT CONNECTOR