Page 1857 of 2234

AVENSIS (EWD526E)9
B
The
”Current Flow Chart” section, describes which parts each power source (fuses, fusible links\
, and circuit breakers)
transmits current to. In the Power Source circuit diagram, the condition\
s when battery power is supplied to each system
are explained. Since all System Circuit diagrams start from the power so\
urce, the power source system must be fully
understood.
ACC
S 2 6
6
5 2
22
Battery 30A AM2
Starter Short Pin
100A ALT
Fusible Link Block
60A ABS10A ECU–B
7.5A DOME
15A EFI
10A HAZARD
20A RADIO NO.1
10A HORN
20A
10A Fuse
Page
214
230
11 2
122 194
187
180
166
210
ABS
Cigarette Lighter
Combination Meter
Key Reminder and Seat Belt Warning
Light Auto Turn Off
Theft Deterrent and Door Lock ControlABS and Traction Control
Cruise Control
Electronically Controlled Transmission
Multiplex Communication System
STOP System
DOME Headlight
Interior Light
3 EA2 1 EA1E 6
E 7
E 7
2
2
2
2 2
2 2
2
INJECTION Relay
STARTER Relay
B
B
B
B–O
1
1 2
23
4
3
4
W–B W–B
B–W
B–W
E 7
E 7 B
B W
1.25B FL MAIN
50A MAIN
7.5A AM2
15A HAZ–RADIO
2
2 2
2
2W
W EB1
EB1
7
6
W–R I 2 I 2 I 2
WW
W
W W
1 1
1 140A DOOR LOCK CB
7.5A DOME
1
W–L
R
1
1
2
43 1
11
1
1 1 1
G
G
W–R
15A TAIL
20A DEFOG
B–Y
84
32Ignition SW I 8
B–Y 1 1P–L
Battery
15A RAD CIG2
TAIL
Relay
Power Source
J POWER SOURCE (Current Flow Chart)
Engine Room R/B (See Page 20)
2
W W
B
B
B
B
B
W–RWW
W
G–W AM2
AM1
IG2
IG1 W
W
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.
∗ The system shown here is an EXAMPLE ONLY. It is different to the actual circuit shown in the SYSTEM CIRCUITS SECTION.
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Page 1858 of 2234
![TOYOTA AVENSIS 2003 Service Repair Manual Black
[D]
K CONNECTOR LIST
J4K1K2 L1
L2 L3 L4 M1M2M3
M4 N1N2O1 O2Dark Gray
Gray
Dark Gray
Black
Gray
Gray
ABB
AABCCC DD
DD A
A
A
AA
A
AA 1
12 12
1 1
2
1
2 12 3
6 7 8 9 1 0 111 2 45
7
12
3456 8
43 21
TOYOTA AVENSIS 2003 Service Repair Manual Black
[D]
K CONNECTOR LIST
J4K1K2 L1
L2 L3 L4 M1M2M3
M4 N1N2O1 O2Dark Gray
Gray
Dark Gray
Black
Gray
Gray
ABB
AABCCC DD
DD A
A
A
AA
A
AA 1
12 12
1 1
2
1
2 12 3
6 7 8 9 1 0 111 2 45
7
12
3456 8
43 21](/manual-img/14/57444/w960_57444-1857.png)
Black
[D]
K CONNECTOR LIST
J4K1K2 L1
L2 L3 L4 M1M2M3
M4 N1N2O1 O2Dark Gray
Gray
Dark Gray
Black
Gray
Gray
ABB
AABCCC DD
DD A
A
A
AA
A
AA 1
12 12
1 1
2
1
2 12 3
6 7 8 9 1 0 111 2 45
7
12
3456 8
43 21
123 234
8910
56
1
7
12
11
[A]
[C]
[B]
J3
12
12
678 12
A
AA
A
AA ABB
AABCCCDD
DD
I14
I15I16 J1 J2Dark GrayGrayBlack
10
AVENSIS (EWD526E)
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.
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Page 1859 of 2234

A 1
L PART NUMBER OF CONNECTORS
A/C Ambient Temp. Sensor
Code
90980–11070Part Number
D 4 Diode (Courtesy)
Code
90980–11608
A 2 A/C Condenser Fan Motor 90980–11237 D 5 Diode (Interior Light) 90980–10962
A 3 A/C Condenser Fan Relay 90980–10940 D 6 Diode (Moon Roof) 90980–11608
A 4 A/C Condenser Fan Resistor 90980–10928
90980–11271D 7 Door Lock Control Relay
90980–10848
A 5 A/C Magnetic Clutch
90980–11413D 8 Door Lock Control SW LH
90980–11148
A 6 A/T Oil Temp. Sensor
90980–11151D 9 Door Lock Control SW RH
A 7 ABS Actuator 90980–11009Door Courtesy SW LH
90980–11097
A 8 ABS Actuator
90980–10941Door Courtesy SW RH
A 9 ABS Speed Sensor Front LH
90980–11002Door Courtesy SW Front LH
ABS Speed Sensor Front RH
90980–11856Door Courtesy SW Front RH
90980–11156
Airbag Sensor Front LH Door Courtesy SW Rear LH
Airbag Sensor Front RH Door Courtesy SW Rear RH
A10
A11
A12
A13 Airbag Squib
90980–11194Door Key Lock and Unlock SW LH
90980–11170
90980–11070 D10
D11
D12
D13
D14
D15
D16
D17 Door Key Lock and Unlock SW RH Part Number
Part Name
Part Name
[A]
[B] [C]
AVENSIS (EWD526E) 11
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 t\
he supply.
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Page 1860 of 2234
![TOYOTA AVENSIS 2003 Service Repair Manual To Ignition SW
IG Terminal
FuseVoltmeter
SW 1
Relay
SW 2 Solenoid[A]
[B]
[C]
Ohmmeter
SW
OhmmeterDiode
Digital Type Analog Type
12 AVENSIS (EWD526E)
C TROUBLESHOOTING
VOLTAGE CHECK
(a) Establish cond TOYOTA AVENSIS 2003 Service Repair Manual To Ignition SW
IG Terminal
FuseVoltmeter
SW 1
Relay
SW 2 Solenoid[A]
[B]
[C]
Ohmmeter
SW
OhmmeterDiode
Digital Type Analog Type
12 AVENSIS (EWD526E)
C TROUBLESHOOTING
VOLTAGE CHECK
(a) Establish cond](/manual-img/14/57444/w960_57444-1859.png)
To Ignition SW
IG Terminal
FuseVoltmeter
SW 1
Relay
SW 2 Solenoid[A]
[B]
[C]
Ohmmeter
SW
OhmmeterDiode
Digital Type Analog Type
12 AVENSIS (EWD526E)
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 k Ω/V
minimum) for troubleshooting of the electrical circuit.
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Page 1861 of 2234
![TOYOTA AVENSIS 2003 Service Repair Manual To Ignition SW
IG Terminal
Test Light
Relay
Light
SW 2 Solenoid DisconnectShort [A]
Disconnect
Disconnect SW 1Fuse Case
Short [B]
Short [C]
Pull Up
Press Down Press Down Pull Up
AVENSIS (EWD526E)
13
C TOYOTA AVENSIS 2003 Service Repair Manual To Ignition SW
IG Terminal
Test Light
Relay
Light
SW 2 Solenoid DisconnectShort [A]
Disconnect
Disconnect SW 1Fuse Case
Short [B]
Short [C]
Pull Up
Press Down Press Down Pull Up
AVENSIS (EWD526E)
13
C](/manual-img/14/57444/w960_57444-1860.png)
To Ignition SW
IG Terminal
Test Light
Relay
Light
SW 2 Solenoid DisconnectShort [A]
Disconnect
Disconnect SW 1Fuse Case
Short [B]
Short [C]
Pull Up
Press Down Press Down Pull Up
AVENSIS (EWD526E)
13
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 unlessabsolutely 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 c onnector you are
disconnecting before pulling apart.
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Page 1862 of 2234
![TOYOTA AVENSIS 2003 Service Repair Manual
(mm)
Reference:
Tool
Up
Example:
(Case 1)
Terminal Retainer
Terminal Retainer
[Retainer at Full Lock Position]
[Retainer at Temporary Lock Position] Stopper
Terminal
Retainer
Secondary
Loc TOYOTA AVENSIS 2003 Service Repair Manual
(mm)
Reference:
Tool
Up
Example:
(Case 1)
Terminal Retainer
Terminal Retainer
[Retainer at Full Lock Position]
[Retainer at Temporary Lock Position] Stopper
Terminal
Retainer
Secondary
Loc](/manual-img/14/57444/w960_57444-1861.png)
(mm)
Reference:
Tool
Up
Example:
(Case 1)
Terminal Retainer
Terminal Retainer
[Retainer at Full Lock Position]
[Retainer at Temporary Lock Position] Stopper
Terminal
Retainer
Secondary
Locking Device
Example:
(Case 2)
14
AVENSIS (EWD526E)
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 c onnector, 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.
”Case 1” Raise the terminal retainer up to the temporary lock
position.
”Case 2 ”
Open the secondary locking device.
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Page 1863 of 2234
![TOYOTA AVENSIS 2003 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 Retai TOYOTA AVENSIS 2003 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 Retai](/manual-img/14/57444/w960_57444-1862.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 Down Tool
Tool
Example:
(Case 2)
AVENSIS (EWD526E)
15
C
[B] For Waterproof Type Connector
HINT : Te r m i n a l r e t a i n e r c o l o r i s d i ff e r e n t according to connector body.
Example:
Terminal Retainer
: Connector Body
Black or White : Gray
Black or White : Dark Gray
Gray or White : Black
”Case 1” 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 n eedle insertion position varies
according to the connector ’s shape
(Number of terminals etc.), so check
the position before inserting it.
”Case 2” Type which cannot be pulled as far as
Power Lock insert the tool straight into
the access hole of terminal retainer as
shown.
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Page 1864 of 2234
Retainer at
Full Lock Position[Male] [Female]
Retainer at
Temporary Lock Position
Locking Lug
Tool
16 AVENSIS (EWD526E)
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
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