2006 AVALON

ELECTRICAL WIRING DIAGRAM

Section Code Page

INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . A . . . . 2

HOW TO USE THIS MANUAL . . . . . . . . . . . . . . . B . . . . 3

TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . C . . . . 12

ABBREVIATIONS . . . . . . . . . . . . . . . . . . . . . . . . . D . . . . 17

GLOSSARY OF TERMS AND SYMBOLS . . . . . E . . . . 18

RELAY LOCATIONS . . . . . . . . . . . . . . . . . . . . . . . F . . . . 20

ELECTRICAL WIRING ROUTING . . . . . . . . . . . G . . . . 48

SYSTEM CIRCUITS . . . . . . . . . . . . . . . . . . . . . . . . H . . . . 64

GROUND POINT . . . . . . . . . . . . . . . . . . . . . . . . . . . I . . . . 410

POWER SOURCE (Current Flow Chart) . . . . . J . . . . 420

CONNECTOR LIST . . . . . . . . . . . . . . . . . . . . . . . . K . . . . 430

PART NUMBER OF CONNECTORS . . . . . . . . . L . . . . 452

OVERALL ELECTRICAL WIRING DIAGRAM . M . . . . 456

AVALON (EM00A0U)
B HOW TO USE THIS MANUAL
The ground points circuit diagram shows the connections from all major parts to the respective ground points. When
troubleshooting a faulty ground point, checking the system circuits which use a common ground may help you identify
the problem ground quickly. The relationship between ground points ( A1 , A2 and D4 shown below) can also be
checked this way.

I GROUND POINT
D43
Junction
H23 Connector
12 9
DLC3 BR BR BR 10 6 (Shielded)
(SG) HB4 DB1

D63
5 BR Throttle

(Shielded)

(Shielded)
(L) Position SW

D60
A20 4 3 BR Injection
W–B 8 (E1) Pump Assembly
Headlamp Leveling
Motor (LH) (LH E)

L5 2 11 BR
W–B 3 W–B 7 (E1)
Power Window
Master SW (E) LA1
1 D2
BR Engine ECU
(E01)

Connector
A22

BR
Junction
Cooling Fan W–B 4
(E)
A25

Motor No.3 BR
(E02)
3
W–B

D4 (5L–E)
A8
Headlamp Leveling W–B
Motor (RH) (RH E)

A5 C2
W–B

Pressure SW W–B W–B Fog Lamp

(–S) (E) (Front LH)

A23 5 C4
Turn Signal Lamp W–B W–B W–B W–B Fog Lamp
(Front LH) (E) CA1 (E) (Front RH)

A11 A10
W–B

Windshield W–B W–B Brake Fluid Level

Wiper Motor (E) (E) Warning SW

I9 12 7 A1
Headlamp W–B W–B W–B W–B Turn Signal Lamp
Leveling SW (E) IH2 HA1 (E) (Front RH)
W–B

A6
Clearance Lamp W–B K5
(Front RH) (E) 3
W–B W–B Power Window
KA1 (E) Master SW
W–B

A21
Clearance Lamp W–B W–B
(Front LH) (E)

20 W – B (Shielded)
A1

19 W – B (Shielded)

W–B
(GND2) 18 W – B (Shielded)
A24
Option Connector
Connector

(Vacuum) W–B
Junction

(GND1)
W–B

17 W – B (Shielded)
B36

21 16
W–B W–B
W–B

(GND) AB1
B19
Skid Control ECU
with Actuator 12 6
W–B W–B W–B
(GND) AB1 AB1
W–B

W–B

W–B

A2

* The system shown here is an EXAMPLE ONLY. It is different to the actual circuit shown in the SYSTEM CIRCUITS SECTION.

AVALON (EM00A0U)
 G
Position of Parts in Engine Compartment
B40 B43 B36 B38 B28 B35 B37 B34 B32 B41 B33 B25 B29 B30 B10

B44
B9

B42
B31

B18
B26

B39
B11

B19
C1

B27
B12

B17

B20

B21

B5 B8 B6 B1 B7 B4 B2 B3 B22 R2 B24 R1 B23 B15 B14 B13 B16

B 1 Engine Oil Pressure SW B 26 Air Fuel Ratio Sensor (Bank 2 Sensor 1)

B 2 Heated Oxygen Sensor (Bank 2 Sensor 2) B 27 Fuel Injector (No.2)
B 3 Heated Oxygen Sensor (Bank 1 Sensor 2) B 28 Fuel Injector (No.4)
B 4 A/C Compressor B 29 Fuel Injector (No.6)
B 5 Generator B 30 Throttle Body Assembly
B 6 Generator B 31 VSV (Purge)
B 7 Crankshaft Position Sensor B 32 Air Fuel Ratio Sensor (Bank 1 Sensor 1)
B 8 A/C Compressor B 33 Noise Filter (Ignition No.2)
B 9 Engine Coolant Temp. Sensor B 34 Ignition Coil (No.5)
B 10 Mass Air Flow Meter B 35 Ignition Coil (No.3)
B 11 Speed Sensor (Counter Gear) B 36 Ignition Coil (No.1)
B 12 Speed Sensor (Turbine) B 37 Crankshaft Position Sensor No.2 (RH Exhaust Side)
B 13 Park/Neutral Position SW B 38 Power Steering Oil Pressure SW
B 14 Electronically Controlled Transmission Solenoid B 39 Fuel Injector (No.1)
B 15 VSV (ACM) B 40 Fuel Injector (No.3)
B 16 Starter B 41 Fuel Injector (No.5)
B 17 Crankshaft Position Sensor No.3 (LH Intake Side) B 42 Crankshaft Position Sensor No.2 (RH Intake Side)
B 18 VSV (ACIS) B 43 Camshaft Timing Oil Control Valve (RH Exhaust Side)
B 19 Camshaft Timing Oil Control Valve (LH Intake Side) B 44 Camshaft Timing Oil Control Valve (RH Intake Side)
B 20 Camshaft Timing Oil Control Valve (LH Exhaust Side)
B 21 Ignition Coil (No.2) C 1 Starter
B 22 Ignition Coil (No.4)
B 23 Ignition Coil (No.6) R 1 Knock Control Sensor (Bank 2)
B 24 Crankshaft Position Sensor No.2 (LH Exhaust Side) R 2 Knock Control Sensor (Bank 1)
B 25 Noise Filter (Ignition No.1)

49

AVALON (EM00A0U)
Power Source

50A ABS/VSC NO. 1

1
B B B
1 1A

30A ABS/VSC NO. 2 50A HEATER

L G
1 1
(∗4)

W
50A RR DEF
(∗5)
Y Y
1 1

7. 5A S–HORN SECURITY HORN 50A RDI FAN

Relay
W
(∗1)

(∗2)

1
W

7. 5A DOME
20A WASHER
1 WASHER Relay 1 2 L–B
1
B
Generator

140A ALT (∗1)

120A ALT (∗2) 10A ECU–B
B5

1 2 O
1

15A RAD NO. 1

Short Pin No. 1
1
1 2 1 2 P
1F 1

DRL Relay
(∗1)

(∗2)

15A HEAD LH UPR

W
B

25A EFI NO. 1

Short Pin No. 2

15A HEAD RH UPR

FL MAIN
3. 0W

10A HORN 40A MAIN

HORN Relay
L L
1

Battery

L L
(∗3) (∗3)

25A A/F
A/F Relay

15A STOP NO. 1

1 2 B B
1

66

AVALON (EM00A0U)
Engine Control

(BAT)

25A
EFI
NO. 1

C/OPN Relay
A/F Relay

EFI Relay
25A A/F

1 1F 6 1C 5 1D 4 1D 2 1H 10 1H 3 1D 9 1H 6 1D 5 1G
W–B

GR
BR

O
V

B
(∗1)

(∗2)
W
B

1
9 KA1

1
B
10A EFI NO. 2

FL MAIN 4
and Gage Assembly

3. 0W
Fuel Suction Pump

Pump

2 M

1
K7

Battery
W–B
GR

GR

V
W–B

W–B

6
A51
Junction
Connector

A1 K1

94

AVALON (EM00A0U)
Front Fog Light
: Parts Location
Code See Page Code See Page Code See Page
A1 48 D9 D 51 D53 52
A25 48 D13 A 51 E2 52
A41 A 50 D37 51 E23 53
A51 48 D39 52 U1 B 53
A53 48 D44 52
D6 A 51 D46 B 52

: Relay Blocks

Code See Page Relay Blocks (Relay Block Location)

1 22 Engine Room R/B (Engine Compartment Left)

: Junction Block and Wire Harness Connector

Code See Page Junction Block and Wire Harness (Connector Location)
1A 22
Engine Room Main Wire and Engine Room J/B (Engine Compartment Left)
1G 24
DE
DF
36 Instrument Panel Wire and Driver Side J/B (Behind the Combination Meter)
DG
DH
DI 36 Instrument Panel No.2 Wire and Driver Side J/B (Behind the Combination Meter)
DK 36 Instrument Panel Wire and Driver Side J/B (Behind the Combination Meter)
IA
IC 30 Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)
ID
IF 30
II 31
Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
IL
30
IR

: Connector Joining Wire Harness and Wire Harness

Code See Page Joining Wire Harness and Wire Harness (Connector Location)
DA1 60 Instrument Panel Wire and Engine Room Main Wire (Left Kick Panel)
ED1 61 Instrument Panel No.2 Wire and Instrument Panel Wire (Left Side of the Instrument Panel)

: Ground Points

Code See Page Ground Points Location

A1 58 Front Left Fender
A4 58 Near the Skid Control ECU with Actuator
D1 60 Left Kick Panel
D2 60 Instrument Panel Brace LH

126

AVALON (EM00A0U)
Illumination

17 DG 12 DC 12 DB 2 DA

E21
Temp. Control SW Assembly
(∗9)

(∗5)

W
G

G
SE ILL+ ILL–

E12(A), E13(B), E14(C), E15(D)

18 10 8
W

2 A (∗6)
3 13 11 2 22 10 B (∗7)
Seat Heater SW

Radio Receiver
8 ILL+ ILL+ PSE PIL+ PIL– ILL+
Navigation
Controller

Assembly
D27

ILL– ILL– GND

E18

5
ILL– 12 A 6 D (∗6)
7
21 E6 5 C 6 D (∗7)
A/C Control Assembly
(∗9)

(∗5)

LG
W

18 DG 13 DC 13 DB
3
LG B
DA

3 DB
R

LG LG

P P

W–B W–B

164

AVALON (EM00A0U)
Power Window

(BAT)

25A
FR DOOR

6 IJ

G6
Power Window SW (Front Passenger' s Side)
V

BW RX PCT E D U VCC PLS1 PLS2 SGND

12 2 11 7 1 6 5 3 4 8

W–B
GR

BR
V

11 GD1 1 GD2 6 GD2 2 GD2

W–B
LG
W
G
R

B
W–B
R
V

1 2 4 5 3 6
D U SSRB PLS PLS2 E

R
M
V

G4
Power Window Regulator Motor (Front Passenger' s Side)

V V

V V

V V

W W
W–B

W–B
W–B

9 11
W–B 1 D53
Junction
Connector

D1 D2

214

AVALON (EM00A0U)
 D39(A), D40(B)
Smart Key ECU

TSW2 SEL2 SEN2 CG2B CLG2

4 A 6 A 23 A 36 A 35 A
GR

BR

LG
V

B
15 GD2 13 GD2 14 GD2 16 GD2 17 GD2

O
R
V

P
3 GV1 2 GV1 4 GV1 6 GV1 7 GV1

G–W
R–W

L–Y

BR

W
V2
Electrical Key Oscillator

Door Outside Handle

3 (Front RH) 4 6 5 10
(Front Door RH)

TRG+ SEL SENS CLGB CLG

SGT2 ANT1 ANT2 TRG– TRG– ANT2 ANT1 SGT GND +B

V1

6 5 2 1 9 8 3 2 7 1

R
B B

L
8 GV1 1 GV1
Y
W–B

2 GD2 17 GD1
W–B

Y Y

B B

R R

BR BR

B B

R R

11
W–B W–B 9 D53
Junction
Connector

D2

233

AVALON (EM00A0U)
 (IG) (BAT)

7. 5A 7. 5A
GAUGE DOME
NO. 2

12 IG 1
∗ 1 : w/ Smart Key System
∗ 2 : w/o Smart Key System
G

L–B
15 DK

13 ID

4 DI

10 IL 6 IR
R

E2
13 Combination Meter

R
Power Supply 19 DK
MPX +B
Circuit

8 DI 8 DK
Security

(∗2)
R
V
Door

4 16 18 2 1 10
W–B
LG

P
B

B B

R R

LG Y

BR BR

B B

R(∗2)
W–B

E1

257

AVALON (EM00A0U)
 System Outline
The radar cruise control system allows you to drive at a selected cruising speed, maintaining an appropriate
vehicle–to–vehicle distance using the laser radar sensor, the steering sensor and the yaw rate sensor. The laser radar
sensor detects the reflection of the vehicle ahead in your lane.
1. Setting Operation
<The vehicle–to–vehicle distance control mode>
While the ON–OFF SW is ON (The power indicator light is turned on), bring the vehicle to the desired speed, press the
control lever downward in the ”– SET” direction and release it. This sets the vehicle at that speed from the lower limit of the
preset speed about 45 km/h (28 mph) to the upper limit of the preset speed about 135 km/h (85 mph). However, the vehicle
speed is faster than 135 km/h (85 mph), the preset spped is the upper limit of the preset speed.
<The conventional cruise control mode>
While the ON–OFF SW is ON (The power indicator light is turned on), bring the vehicle to the desired speed, press the
control lever downward in the ”– SET” direction and release it. This sets the vehicle at that speed. It is possible to set at that
speed between lower speed limit and higher speed limit.
2. Resetting to a Speed
<The vehicle–to–vehicle distance control mode>
(1) Resetting to a lower speed
The set speed can be decreased 5 mph (For USA) or 5 km/h (For Canada) each time by pressing the control lever
downward in the ”– SET” direction quickly within 0.5 seconds.
And while the cruise control is on and the control lever is held downward in the ”– SET” direction, the preset speed will
decrease every 5 mph (For USA) or 5 km/h (For Canada). But you cannot decrease lower than the lower limit of the
preset speed about 27 mph (For USA) or 43 km/h (For Canada). If the preset speed is changed, the vehicle speed will
be gradually decreased to the preset speed. (In the other case, perhaps the vehicle speed will be increase.)
(2) Resetting to a faster speed
∗ The set speed can be increased 5 mph (For USA) or 5 km/h (For Canada) each time by pressing the control lever
upward in the ”+ RES” direction quickly within 0.5 seconds.
And while the cruise control is on and the control lever is held upward in the ”+ RES” direction, the preset speed will
increase every 5 mph (For USA) or 5 km/h (For Canada). But you cannot increase faster than the upper limit of the
preset speed. If the preset speed is changed, the vehicle speed will be constantly increased to the preset speed. (In the
other case, perhaps the vehicle speed will be decrease.)
∗ When your vehicle follow up cruise function, if press the control lever upward in the ”+ RES” direction, the vehicle speed
will not be increased and the preset speed will be changed only.
<The conventional cruise control mode>
(1) Deceleration
∗ While the cruise control is on and the control lever is held downward in the ”– SET” direction, the vehicle speed will
gradually decrease. When you release it, this sets the vehicle speed at that speed. If the control lever is released when
the vehicle speed exceeds the upper limit of the preset speed traveling downhill while you are pressing the control lever
downward, the system will memorize the upper limit of the preset speed as a preset speed.
∗ When the difference between the actual vehicle speed and the set speed is less than 5 km/h (3 mph), the set speed can
be decreased 1.6 km/h (1 mph) each time by pressing the control lever downward in the ”– SET” direction quickly within
0.5 seconds. But if the control lever is released when the difference between the actual vehicle speed an the set speed
is more than 5 km/h (3 mph), this sets the vehicle speed at that speed.
(2) Acceleration
∗ While the cruise control is on and the control lever is held upward in the ”+ RES” direction, the vehicle speed will
constantly increase. When you release it, this sets the vehicle speed at that speed. If the vehicle speed exceeds the
upper limit of the preset speed while you are pressing the control lever downward, the system will cruise at the upper
limit of the preset speed. And if the control lever is released, this sets the vehicle speed at that speed.
∗ When the difference between the actual vehicle speed and the set speed is less than 5 km/h (3 mph), the set speed can
be increased 1.6 km/h (1 mph) each time by pressing the control lever upward in the ”+ RES” direction quickly within 0.5
seconds. But if the control lever is released when the difference between the actual vehicle speed and the set speed is
more than 5 km/h (3 mph), this sets the vehicle speed at that speed.
∗ If you are pressing the control lever downward and released when the vehicle speed is increased by pressing the
acceleration pedal, the system will memorize the preset speed at that speed. But if you operate the control lever
downward at the upper limit of the set speed, you cannot set the preset speed.
3. The Lower Limit of the Preset Speed
∗ This is the lower limit of the preset speed of the followings. This is a difference of the lower limit of the canceled speed.
∗ For USA : about 27 mph
∗ For Canada : about 43 km/h
∗ When the vehicle speed is less than the lower limit of the preset speed, you cannot change the preset speed.

297

AVALON (EM00A0U)
ECT and A/T Indicator

(IG) (BAT) (BAT)

10A 10A 15A

IGN ETCS STOP
NO. 1

2 2

2 IH
1 1

B
G
2

10 DE
B–W(∗1)

A41(A), D46(B)
V
14 AD2 1 B

Stop Lamp SW
B(∗1)

Connector
Junction
20 DF

A23
5 A

L
B
1
Y

B–W(∗1)
5 AD2 W
B–W
(∗1)

(∗1)
B

W–R(∗2)

W
8 B 11 C 17 D 12 C 9 D 7 D 15 D
STAR STA ACCR STSW IGSW +BM STP
A24(D), B45(A), B46(B), B47(C), D41(E)
Engine Control Module
BATT MREL +B +B2 VTA1 VC VTA2 M+ M– GE01 THW E2
3 D 8 D 1 D 2 D 20 A 23 A 19 A 5 A 4 A 17 A 21 A 28 A
R
R
B

B–W
G–R

L–B

(∗3)

W
B
Y
Connector

9 A 8 A
Junction
A41(A)

6 5 4 2 1 2
Engine Coolant
Temp. Sensor

7 A VTA VC VTA2 M+ M– THW

E2
B9

M
1
Y

E2
3 B30
BR

Throttle Body Assembly

BR BR BR
B

W–B W–B

314

AVALON (EM00A0U)
Sliding Roof

(BAT) (IG) (ACC) (BAT)

30A 7. 5A 7. 5A 10A
S/ROOF ECU IG ECU– ECU–B
NO. 1 ACC

10 2
Y
IR
12 IR
1
B

O
10 DN1 17 DN1 7 DN1

O
B

7 IR 10 ID

5 8 2 18 15 22 26
B IG PWS PWS IG ACC BECU
D8(C)
Sliding Roof ECU Body ECU
GND1 GND2 DCTY
5 4 14 C

Sliding Roof Motor

UP DWN E 1 IR 10 IF 9 IM

L
N4 10 9 7
Sliding Roof Control ECU
W–B

16 DL
W–B

W–B

W–B
W

1 PD
5 6
UP Sliding Roof DOWN 5 DK
Control SW
1 PC
L
SLIDE
Map Lamp

OPEN
TILT
UP

E 11 DN1
W–B
N6

7 3 DK3
W–B

W–B

W–B

P
Door Courtesy SW

1
(Driver' s Side)
K4
W–B

W–B

D1 D2

346

AVALON (EM00A0U)
Multi Display without Navigation System
: Parts Location
Code See Page Code See Page Code See Page
A11 48 D39 52 E7 52
A41 A 50 D44 52 E11 52
A51 48 D46 B 52 E15 53
D6 A 51 D53 52 E23 53
D13 51 E1 52
D37 51 E2 52

: Relay Blocks

Code See Page Relay Blocks (Relay Block Location)

1 22 Engine Room R/B (Engine Compartment Left)

: Junction Block and Wire Harness Connector

Code See Page Junction Block and Wire Harness (Connector Location)
1G
1H 24 Engine Room Main Wire and Engine Room J/B (Engine Compartment Left)
1I
DB 36 Instrument Panel No.2 Wire and Driver Side J/B (Behind the Combination Meter)
DD
DE
36 Instrument Panel Wire and Driver Side J/B (Behind the Combination Meter)
DG
DH
DI
36 Instrument Panel No.2 Wire and Driver Side J/B (Behind the Combination Meter)
DJ
DK 36 Instrument Panel Wire and Driver Side J/B (Behind the Combination Meter)
ID 30 Engine Room Main Wire and Instrument Panel J/B (Lower Finish Panel)
IF 30
IG 31 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
IR 30

: Connector Joining Wire Harness and Wire Harness

Code See Page Joining Wire Harness and Wire Harness (Connector Location)
DA1 60 Instrument Panel Wire and Engine Room Main Wire (Left Kick Panel)
ED1 61 Instrument Panel No.2 Wire and Instrument Panel Wire (Left Side of the Instrument Panel)

: Ground Points

Code See Page Ground Points Location

A1 58 Front Left Fender
A3 60 Left Side of the Instrument Panel
D1 60 Left Kick Panel
D2 60 Instrument Panel Brace LH
E1 60 Under the Combination Meter

380

AVALON (EM00A0U)
 K
P13 P14 P16 P17

1 2 3 4
1 2
1 2 3 4 5 6 7 8 9 10
5 6 7 8
1 2 3 4 5

6 7 8 9

1011121314151617

Q1 R1 R2 S1 S2 T1
Black Gray Black Black Orange

1
1 2 1 2
1 2 1 2
1 2 3 4
5 6 7 8

U1 V1 V2 W1
Black Black

1 2 3 4 5 1 2 3 4 5
1 2 3 4 5 6 7 8 9 10 6 7 8 9 10 1 2 6 7 8 9 10
11 12 13 14 15 16 17 18 19 20 3 4
5 6

W2 X1 X2 Y1 Y2
Black Black

1 2 3 4 5 1 2 3 4 5
1 2 6 7 8 9 10 1 2 6 7 8 9 10 1 2
3 4 3 4 3 4
5 6 5 6 5 6

Z1

1 2 3 4 5

443

AVALON (EM00A0U)