TOYOTA LAND CRUISER 1998 Factory Repair Manual

2004 LAND CRUISER (EWD548U)
164Automatic Light Control
B 7(
A)
, B 9(
C) 5B 4
5D 3
15A AM2
From Power Source System (
See Page 94)
1C 2
TAIL Relay
G 15A TAIL
120A
J/B
NO. 1
140A
ALTF15
Battery 11B 67
A 28 2B 24 1B 49
HEAD Relay
22 1B
52B 11 2E C 20
HeadTail OFF
Light Control
SW
Auto
II3 316
A A
II 3E 35
J 3
W- B W- B W- B
C 3
II5 1
IU3 17 IU3 18 IU316 C 6C21 C4
CLTS CLTB CLTE4 36B
A31B
YSB SB
SB YR
BR
Y
CLTS CLTB CLTE
E
E C 53E 26
3E 213D 13 4A 17
4A 8A 17(
*1)
B 3(
*2)
10A ECU- IG17. 5A ACC B- G
G- B
G- B
G
W- LG
W- L W- L
W- L
IDL TRLY 183TCDR(
*1)
TC(
*2)
ACAN
A47
M 5(
A)
, M 9(
B)
R- W R- W R- WR- W R- W
17HRLY HF2
J 9G- O G- O
A
12
C16
10A ECU- B2
SB
2Q 223Q 71
11 22 10
SIG ACC BECU TCC 18 4IF1
IU3 4
BSB
TC
5R 6 B
* 2 : w/o Navigation System * 1 : w/ Navigation System
Automatic Light
Contr ol Sensor Combination SW
Multi- Display
RheostatA/C Control
Assembly
Body ECU
Junction
Connector Junction
Connector
Fusible
Link Block16 GND1 GND2
4
IG IF
BRR
25A DOOR
12
BDR1
IM2 1IM23IM22

2004 LAND CRUISER (EWD548U)
165
The automatic light control system works when the light control SW is turned to AUTO. The automatic light control sensor
detects the brightness around the vehicle. By this function, the system automatically turns the taillight and headlight on if the
brightness is below the regular level and turns the taillight and headlight off when the surroundings become brighter than the
regular level.
Body ECU
11, 12-Ground : Always approx. 12 volts
22-Ground : Approx. 12 volts with ignition SW at ACC or ON position
10-Ground : Approx. 12 volts with ignition SW at ON or ST position
4, 16-Ground : Always continuity
: Parts Location
CodeSee PageCodeSee PageCodeSee Page
A3170C1670M5A71
A4770F1568M9B71
B7A70J371R671
B9C70J971
:Junction Block and Wire Harness Connector
CodeSee PageJunction Block and Wire Harness (Connector Location)
1B24Engine Room No 2 Wire and Engine Room J/B (Engine Compartment Left)1C24Engine Room No.2 Wire and Engine Room J/B (Engine Compartment Left)
2B28Engine Room No.2 Wire and Cowl Side J/B LH (Left Kick Panel)
2E28Dash Wire and Cowl Side J/B LH (Left Kick Panel)
2Q30Instrument Panel Integration Wire and Cowl Side J/B LH (Left Kick Panel)
3D40Dash Wire and Cowl Side J/B RH (Right Kick Panel)3E40Dash Wire and Cowl Side J/B RH (Right Kick Panel)
3Q42Instrument Panel Integration Wire and Cowl Side J/B RH (Right Kick Panel)
4A52Dash Wire and J/B No.4 (Instrument Panel Center)
5B56Dash Wire and J/B No.5 (Behind the Combination Meter)
5D56Engine Room No.2 Wire and J/B No.5 (Behind the Combination Meter)
:Connector Joining Wire Harness and Wire Harness
CodeSee PageJoining Wire Harness and Wire Harness (Connector Location)
IF178Instrument Panel Integration Wire and Instrument Panel Wire (Left Side of Instrument Panel)
II380Dash Wire and Column Wire (Near the Ignition SW)II580Dash Wire and Column Wire (Near the Ignition SW)
IM280Instrument Panel Integration Wire and Instrument Panel No.3 Wire (Right Side of Instrument Panel)
IU382Instrument Panel Integration Wire and Dash Wire (Behind the Glove Box)
:Ground Points
CodeSee PageGround Points Location
IF78Set Bolt of Cowl Side J/B LHIG78Set Bolt of Cowl Side J/B LH
II78Set Bolt of Cowl Side J/B RH
System Outline
Service Hints

2004 LAND CRUISER (EWD548U)
166Light Auto Turn Off
B 7(
A)
, B 8(
B)
, B 9(
C) 5B 4
5D 3
15A AM2
1C 2
TAIL Relay
G 15A TAIL
120A
J/B
NO. 1
140A
ALTF15
Battery 11B 67
A 28 2B 24 1B 493
HEAD Relay
22 1B
52B 11 2E C 20
HeadTa il OFF
Light Control
SW
Auto
II3 316
A A
II 3E 35
J 3
W- B W- B W- B
C 8
II5 5
E
E
10A
ECU- IG1 7. 5A ACC B- G
G- B
G- B
GG
IDL TRL Y 18
R- W R- W R- WR- W R- W
17HRLY HF2
J 9G- B G- B
TAI L
14
C16
10A ECU- B2 SB
2Q 223Q 71
11 22 10
SIG ACC BECUFrom Power Source System (
See Page 94)
25A DOOR
12
BDR1
1 10 2K82EB 23
D14R- Y R- Y
DCTY
II5 2
13 HEAD
C 1
R- W R- W
Combination SW
Door Courtesy SW
Front LH
Body ECU
Junction
Connector Junction
Connector
Fusible Link
Block16 GND1 GND2
4
IG IF 2 23 3E 18 3EC 14
U 1R- B R- B
KSW
Unlock Warning SW
13P 33P
2E 18
W- B W- B
1

2004 LAND CRUISER (EWD548U)
167
The light auto turn off system automatically turns the taillight or headlight off according to the door open or close on the
driver's side, and prevent failing to turn off the lights.
If the ignition switch is turned to OFF from ON with the headlight or taillight is on, the signal is input in the TERMINAL SIG of
the body ECU. If the driver's side door is opened at that time, the signal from the door courtesy SW front LH is sent to the
TERMINAL DCTY of the body ECU. The signal turns the headlight or taillight off.
Delayed turn off control
In the case of that some doors are opened, the headlight or taillight is left on for about 30 seconds after the all the doors was
closed. However, if the doors are locked using the wireless door lock, the headlight or taillight is immediately turn off.
Body ECU
11, 12-Ground : Always approx. 12 volts
10-Ground : Approx. 12 volts with ignition SW at ON or ST position
4, 16-Ground : Always continuity
: Parts Location
CodeSee PageCodeSee PageCodeSee Page
B7A70C1670J371
B8B70D1472J971
B9C70F1568U171
:Junction Block and Wire Harness Connector
CodeSee PageJunction Block and Wire Harness (Connector Location)
1B24Engine Room No 2 Wire and Engine Room J/B (Engine Compartment Left)1C24Engine Room No.2 Wire and Engine Room J/B (Engine Compartment Left)
2B28Engine Room No.2 Wire and Cowl Side J/B LH (Left Kick Panel)
2E28Dash Wire and Cowl Side J/B LH (Left Kick Panel)
2K28Floor No.1 Wire and Cowl Side J/B LH (Left Kick Panel)
2Q30Instrument Panel Integration Wire and Cowl Side J/B LH (Left Kick Panel)
3E40Dash Wire and Cowl Side J/B RH (Right Kick Panel)3P43Dash Wire and Cowl Side J/B RH (Right Kick Panel)
3Q42Instrument Panel Integration Wire and Cowl Side J/B RH (Right Kick Panel)
5B56Dash Wire and J/B No.5 (Behind the Combination Meter)
5D56Engine Room No.2 Wire and J/B No.5 (Behind the Combination Meter)
:Connector Joining Wire Harness and Wire Harness
CodeSee PageJoining Wire Harness and Wire Harness (Connector Location)
II380Dash Wire and Column Wire (Near the Ignition SW)II580Dash Wire and Column Wire (Near the Ignition SW)
:Ground Points
CodeSee PageGround Points Location
IF78Set Bolt of Cowl Side J/B LHIG78Set Bolt of Cowl Side J/B LH
II78Set Bolt of Cowl Side J/B RH
System Outline
Service Hints

2004 LAND CRUISER (EWD548U)
168Multiplex Communication System (Communication Bus)
IU3 15
IL3 1E
EC 26
31
T 5J14A 11
IY2 11
8
P18B 14
BA4 11
8
P19B 16
BC4 11
8
P20A 24
IC2 11
7
P12A 23
22
C263
T 7 ID4 19 IV492G4
2Q 7
3F 73Q 37
3D 41 B 7(
A)
, B 8(
B)
, B 9(
C)
B SB
W SB B
W
W
W
B
B
BSB BBW
W W
W
MPX3 MPX4 MPX5 MPX6 MPX1 MPX2
MPX1 MPX1 MPX1 MPX1 MPX1 MPX2 MPX1
(
w/ Side Air bag)
Center Airbag
Sensor Assembly Power Window
Master SW Power Window
Control SW
Fro nt RHPower Window
Control SW
Rear LHPower Window
Control SW
Rear RH Th eft
Deterr ent
ECUTilt and
Telescopic
ECU Body ECU
Junction
Connector

2004 LAND CRUISER (EWD548U)
169
19
20C1529
18E 8
2E 24
2Q 6634F
4C 12IU1 9
B P- BSB
SBBSB SB
64E
4A 1044E
4C 3
19 39
A45 411
B
P- B B
P- B
G 4
MPD1 MPD2
MPX1 MPX2 MPX+ MPX-
(
*1) (
*1)
(
*1)(
*1)
* 1 : w/ Navigation System
Combination
MeterEngine Control
ModuleGateway ECU
A/C Control Assembly

2004 LAND CRUISER (EWD548U)
170Multiplex Communication System (Communication Bus)
Multiplex Communication System Includes Following Systems
* Automatic Light Control
* Door Lock Control
* Front Fog Light
* Headlight
* Interior Light
* Key Reminder
* Light Auto Turn Off
* Power Window
* Theft Deterrent
* Wireless Door Lock Control

2004 LAND CRUISER (EWD548U)
171 Memo

2004 LAND CRUISER (EWD548U)
172Multiplex Communication System
120A
J/B
NO. 1
140A
ALTF15 From Power Source System (
See Page 94)
7. 5A
IDLE UP
2G 2B 7(
A)
, B 8(
B)
, B 9(
C)
A 27 A3
Battery15 232G 1
2K 92Q79
1 4
3
OFF
DOOR ON
BR1 8
BR1 9 BR1 11
F11
F1 0
G- W
B- G
SB
L- Y B- GR
R- W L- Y
SB
R
R W W- B
W
W W- BDOME Relay
DEF LMRY
W- B
R
G- W
B 7 B 7
B 7
IF 2L 11
W- B
2 1
1R 2L 8
25A DOOR12BDR1
Front Personal Light
Body ECU
Fr ont Interior Light
Rear Per sonal Light
Fusible Link Block
B
120A
MAIN 2B- G
B- G

2004 LAND CRUISER (EWD548U)
173
BR1 5
BR1 4
2L 18
2E 126 2
2E 15
2L 33Q 80
3K 221 2
1 2
1 2
1 2 IY2 12 BC42IC212 BA42 IV4 8ID420 B 22 B21 A 26 A 25
BC4 1 BA41
V 6
V 7
R27
D11
D13
D10
D12T10
G- W
B- G
SB
L- YR
W
G- Y
G- W
R
R
R
R
RG-RG- WG- RG- B
G- R
G- Y G- YG- RG- B
G- W R
PCYL RCYL DCYL LCYL
B- G
SB
L- Y G- Y
R
R
SB
R R
B 7(
A)
, B 8(
B)
, B 9(
C)
ILE
13
2 1
2 11
OFF
DOOR ON
W
23J 7 B 7 B 7
B 7
R
R
R
W- B
W- B
W- B
R
G- Y W- BR2Q 27 2I 4 2K 22 2E 22
Door Courtesy Light Front LH Door Courtesy Light Front RH
Door Courtesy Light Rear LH Door Courtesy Light Rear RH Rear Inter ior Light
Ignition Key Cylinder Light Vanity Light LH
Vanity Light RH
Body ECU
B- GB- G