1998 TOYOTA LAND CRUISER warning light

2004 LAND CRUISER (EWD548U)
8B 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 (
EA, IB and IC shown below) can also be
checked this way.
5
5
5
5
4
44
4
4 BA15IB18EA2
ID115
IC33 IA12 E 3
W-BW-B W-B W-B W-B
W-B
W-B
W-B
W-B W-B
W-B
W-B W-B
W-B
W-B W-B W-BW-B W-B W-B W-B
W-B
W-B
W-B
W-B W-B W-B
W-B
BR
W-B
BR BRW-BW-B W-B
W-B
W-B
W-B
W-B W-B W-B
W-B
W-B W-B
W-B
W-B
BR W-B
BR BR
BR W-B (4A-GZE)
W-B W-BI 2
I 2
B 5 I 5 I 5 I 5
B 5
B 5
B 5
I 5
I 5
I 3 I 3 E 3
E 3
E 3
E 2
E 4
E 5
E 4
E 5
E 6 E 4 E 4
B 4
EA I 4
B 4
B 4
I 4 I 8
IB IC 443E5
3E6 3G13 3F3 3D1 3B7W-B
W-B
W-B W-B W-B
W-B
W-B
W-B
W-B
W-B
W-B
W-B
W-B
W-B W-BI 6
I 6
I 2 3C7
10A A A A
A
A
Junction
Connector J 1
W-B
W-B
W-B W-B
BR W-B W-B
W-B
W-B W-B
W-B
I GROUND POINT
FAN MAIN Relay
FAN MAIN Relay
A/C Relay No.2
A/C Relay No.3
Radiator Fan Motor
Headlight Cleaner Relay
Headlight LH
Headlight RH
Front Fog Light LH
Brake Fluid Level SW Front Fog Light RH Front Turn Signal Light RH
Front Clearance Light RH
Front Turn Signal Light LH
Front Clearance Light LH
Door Lock Control SW
Door Courtesy SW RH
Door Lock Motor RH
Door Lock Control Relay
Blower Resistor
Idle-Up SW
A/C Amplifier
Radio and Player
HEATER Relay
Auto Antenna MotorA/C Control Assembly
Blower Motor
Blower SW
Parking Brake SW
Combination Meter
Combination SW
Cruise Control ECU
Remote Control Mirror SW
Turn Signal Flasher
Defogger SW
Unlock Warning SW
Power Window Master SW
Power Window Control
Relay
Door Courtesy SW LH
Door Lock Control SW
Door Lock Motor LH
Fuel Control SW
Woofer Speaker Amplifier
Combination Meter
Combination Meter
Fuel Sender Cigarette Lighter
O/D Main SW
Clock
Combination SW
*The system shown here is an EXAMPLE ONLY. It is different to the actual circuit shown in the SYSTEM CIRCUITS SECTION.

2004 LAND CRUISER (EWD548U)
9 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.
ACC
S 26
652
22
Battery30A AM2
StarterShort Pin
100A ALT Fusible Link Block
60A ABS10A ECU-B
7.5A DOME
15A EFI
10A HAZARD
20A RADIO NO.1
10A HORN
20A
10AFusePage
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 STOPSystem
DOMEHeadlight
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
4W-B W-B
B-W
B-W E 7
E 7B
BW1.25B FL MAIN
50A MAIN
7.5A AM2
15A HAZ-RADIO 2
22
2
2W
WEB1
EB17
6
W-RI 2 I 2 I 2
WW
W W W
1 1
1 140A DOOR LOCK CB
7.5A DOME 1W-L
R 1
1
2
431
1 1
1
111 G
G
W-R 15A TAIL
20A DEFOG
B-Y 84
32Ignition SW I 8
B-Y
11P-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-R
WW W
G-WAM2
AM1 IG2
IG1W
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.

2004 LAND CRUISER (EWD548U)
71 G
Position of Parts in Instrument Panel
J 1 Junction Connector
J 2 Junction Connector
J 3 Junction Connector
J 4 Junction Connector
J 5 Junction Connector
J 6 Junction Connector
J 7 Junction Connector
J 8 Junction Connector
J 9 Junction Connector
J 10 Junction Connector
J 11 Junction Connector
J 12 Junction Connector
J 13 Junction Connector
J 14 Junction Connector
J 15 Junction Connector
J 16 Junction Connector
J 17 Junction Connector
J 18 Junction Connector
J 19 Junction Connector
J 20 Junction Connector
J 21 Junction Connector
K 3 Key Interlock Solenoid
M 5 Multi-Display
M 6 Multi-Display
M 7 Multi-Display
M 9 Multi-Display
P 4 Power Outlet (Front)
P 5 Power Outlet (Rear Console Box)
P 6 Power Quarter Window SW LH
P 7 Power Quarter Window SW RHR 5 Remote Control Mirror SW
R 6 Rheostat
R 7 Room Temp. Sensor (Front)
R 36 Radio and Player
R 37 Radio and Player
R 38 Radio and Player
R 39 Rear Seat Audio Controller
R 40 Roll Sensing of Curtain Shield Airbags Cutoff SW
S 3 Seat Heater SW (Driver's Seat)
S 4 Seat Heater SW (Front Passenger's Seat)
S 5 Stop Light SW
T 4 Telescopic Motor
T 5 Theft Deterrent ECU
T 7 Tilt and Telescopic ECU
T 8 Tilt and Telescopic ECU
T 9 Tilt Motor
T 10 Ignition Key Cylinder Light
Transponder Key Amplifier
T 11 Turn Signal Flasher
T 18 Towing Brake Controller
T 19 Transponder Key Computer
U 1 Unlock Warning SW
V 8 VSC Warning Buzzer
Y 1 Yaw Rate Sensor
Z 1 Option Connector (Glass Breakage Sensor)

2004 LAND CRUISER (EWD548U)
376I GROUND POINT
(
VER4) (
GND) (
VER1)
A/C Control
Assembly(
VER2)
Air Vent Mode
Control Ser vo Motor
Overhead J/B
Unlock Warning SWEngine
Control
Module Cigarette Lighter
Power Outlet
(
Fron t)
Electronically
Controlled
Transmission
Pattern Select SW W- B
W- B
W- B W- B
Auto Antenna
Control Relay W- B A
AAJ11 W- B
W- B
Key Interlock
Solenoid W- B
Transponder Key
Computer A W- B
W- B4C2
2D23
2L 14
3P3
3P9
3P2 (
VER5)W- B2D2 4F 10
Body ECU (
GND1)
3P8 3P1
2E18 A
A
A W- B
W- B
3M10
IF W- B
W- B
W- B
W- B
W- B 2D22
4E22
4C11
4B8 4D8
(
EOM)
(
HP) W- BW- B
Inner Mirror
Front Personal
Light
Vanity Light RH
Vanity Light LH
Moon Roof Control
SW
Door Key Lock
and Unlock SW LH
Door Lock Motor
Fro nt LH
Door Unlock
Detection SW
Fro nt LHB 7
B 7 W- B
W- B
W- B
W- B
W- B W- B
W- B Remote Control
Mirror LH2E34
SB
Combination
Meter
18
2DW- B
Data Link
Connector 3 (
CG) IU22
B B W- B W- B
W- B
W- B
W- B Power Window
Master SW(
GND)
(
KEYE)
B 2
B 2
W- B
W- B
2I8
BS14
W- B W- BIE21
W- B (
E)
Moon Roof
Control ECU
(
GND) Front Interior
Light
Rear Per sonal Light
B 7
2L 11
W- B BR111
W
W- B
B 72A3 2B13
W- B
W- B W- B
W- B
Combination
SW Theft Deterrent ECU
IH29
2Q23 2Q20
IL322
W- B
W- BSB
SBDEFOG Relay
ACC Relay
IG1 NO. 2 Relay
Center Cluster
Integration Panel 3N7
W- B W- B
2D9
W- B
(
ESS)
W- B W- B W- B
Junction
Connector
A/T Shift Lever
Illumination
Shift Lock
Control ECU 2Q43
W- B Roll Sensing of
Curtain Shield
Air bags Cutoff SW AA
IF211
SB SBJunction
Connector J12 W- B 10
2EW- B
A A
B E Ju nctio n
Connector J 9(
A)
, J10(
B) Junction
Connector J 8
Multi- Display (
SGND)

2004 LAND CRUISER (EWD548U)
M
5
678
12 LAND CRUISER (
Cont' d)(
Cont. next page)
83A10A
ECU- B2 25 3B D C B A
D 15 6 B
Buzzer2B
A 8
2CA 9
1CA 2
12 CA 3
11 CA 4
5CA 5
6CD 6
1BA 11
3AD 9
4BA 28
5BA 18
8B16 B 24 B 22 B 14 B 7B 10 B
G- WWR
GYL
Engine Control
Module
<4- 17><4- 18>
Stop Light SW
< 10- 4>
B- W B- WL
B- W
1A 6B 2B 1D
EE Fr ont Left Side
of Fender Apron
W- B W- B
W- B
W- B
W B- OGB G- WG- Y
R- YO WL GR
PL SRRH SRRR SA1 SA2 SA3 STR AST PH MT-MT+ SRRH SRRR SA1 SA2 SA3 STR AST PH PL MT+ MT-I G1 BZ ST P NE O E NG+ E NG- TRC+ TRC-2
1
GND PLG GND2 GND1
A37(
A)
, A38(
B)
, A39(
C)
, A40(
D)
WRB
(
*1)
23 A 12 A 22 A 10 A 5B 3B
Data Link
Connec tor 3< 4- 8>Park/Neut ral
Po si t i o n SW
<5- 10>
GND VOUT VCCGYAW YAW2 VYS
22 IG4 18 IG4 20 IG4 19 IG4 21 IG4YD
18 C 27 C 28 C 9 C 19 C5186
321
(
*1) R WBL
(
*1) R WBL
G- W
V- W
25 A 16 A
4 215 A 14 A
2 113 A
B
R GL P(
*1)(
*1) D/ G P MSS E2 PMC VCM YSS GYAW YAW VYS YD
FSS FL+ FL - FR+ FR-
W- R
BBA
B
B 17GND4
B 8GND3
A 31GND1
A 6GND2
W- B W- B
5A
PHG
IF Set Bolt of
Cowl Side J/ B LH2B 13 2A 317 IG4 16 I G4
10 C 22 C24
Y G
Y GGL2 GL1
W- B W- B
W- B
W- B
W- B W- B
A41(
A)
, A42(
B)
, A43(
C)
, A44(
D)
C SB
SB
Y- G SB B- WSB L- O
Y 1
M 4
J 2A12 A13
W- B
W- B
V 8
W- B
L- W+BI
2D
Y- GLBL
W- B
W- B
VSC
* 1 : Shielded
GL2 GL1
ABS Speed Sensor
Fr ont LH ABS Speed Sensor
Fr ont RH
ABS & BA & TRAC & VSC ActuatorABS & BA & TRAC & VSC ECUMas ter Cy linder
Pres sure Sensor
VSC Warning Buzzer
Yaw Rate Sensor
Junction
Connector

2004 LAND CRUISER (EWD548U)
M
1516
14 13
30 LAND CRUISER (
Cont' d)
Combination M eter
Tur n RHTurn LHMalfunction
Indicator Lamp
VSC OFF Center Diff. LockTRACABS BRAKE
14 B 11 B 17 B 16 B 15 B 18 B 12 A 19 C 20 C 1 C 9 B 6A 4A
18 C
VSC TRACSlipRS CA OF F
19 B
Turn Signal
and Hazard
Warning Light
Sy st em< 6 - 2 >
C12(
A)
, C13(
B)
, C14(
C)
, C15(
D)
Multiplex Communication
System< 1- 35>
VSC System
< 12- 13> < 12- 14>
Center Differential
Lock System< 14- 3> Engine Contr ol Sys tem
<4- 10>
2IU2
B B
IFSet Bolt of
Co wl S i de J/ B L H 2E 34
SB W- B W- BJ 8
SRS Sy st e m
<13- 2>
Combination Meter
J unc tion
Connec tor

SYSTEM INDEX
M OVERALL ELECTRICAL WIRING DIAGRAM
2004 LAND CRUISER (EWD548U)
412
SYSTEMS LOCATION SYSTEMS LOCATION
Air Conditioning (Front) 31-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Air Conditioning (Rear) 31-15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Auto Antenna 28-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Automatic Glare-Resistant EC Mirror with Compass 15-3. . . . . . . . . . .
Back-Up Light 10-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Center Differential Lock 14-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Charging 2-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cigarette Lighter 21-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Combination Meter 30-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cruise Control 5-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electronically Controlled Transmission and A/T Indicator 5-6. . . . . . . . . .
Engine Control 4-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Engine Immobiliser System 4-19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Front Wiper and Washer 18-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Garage Door Opener 15-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Horn 18-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ignition 3-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Illumination 9-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mirror Heater 11-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Moon Roof 17-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Multi-Display (w/o Navigation System) 29-3. . . . . . . . . . . . . . . . . . . . . . .
Multiplex Communication System 1-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
* 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
Navigation System 26-12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Outlet 20-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Rear Quarter Window 11-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Seat 22-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Source 1~31-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Tilt and Power Telescopic 23-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Radio and Player (w/ Navigation System) 26-5. . . . . . . . . . . . . . . . . . . . .
Radio and Player (w/o Navigation System) 27-3. . . . . . . . . . . . . . . . . . . .
Rear Window Defogger 11-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rear Wiper and Washer 19-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Remote Control Mirror 16-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Seat Belt Warning 25-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Seat Heater 21-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Shift Lock 24-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SRS 13-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Starting 2-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Stop Light 10-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Taillight 8-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TOYOTA Parking Assist (Rear View Monitor) 26-12. . . . . . . . . . . . . . . . .
Trailer Towing 7-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Turn Signal and Hazard Warning Light 6-2. . . . . . . . . . . . . . . . . . . . . . . . . .
VSC 12-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

L
CodePart Name Part NumberCodePart Name Part Number
2004 LAND CRUISER (EWD548U)
409
R31Rear Wiper Relay90980-10797
R32Remote Control Mirror LH90980-1 1573R33Remote Control Mirror RH90980-11573
R34Room Temp. Sensor (Rear)90980-1 1918
R36Radio and Player90980-12038
R37Radio and Player90980-12183
R38Radio and Player90980-12259
R39Rear Seat Audio Controller90980-12200
R40Roll Sensing of Curtain Shield Airbags
Cutoff SW90980-10957
S 1Starter90980-1 1400
S 2Starter90980-09585
S 3Seat Heater SW (Driver's Seat)90980-10797
S 4Seat Heater SW (Front Passenger's Seat)90980-10996
S 5Stop Light SW90980-1 1118
S 6Stereo Component Amplifier90980-10848
S 7Stereo Component Amplifier90980-10807
S 8Seat Belt Warning Occupant Detection
Sensor90980-10860
S 9Seat Heater (Driver's Seat)90980-10907S10Seat Heater (Front Passenger's Seat)90980-10907
S11Side Airbag Sensor Front LH
S12Side Airbag Sensor Front RH90980-12225S13Side Airbag Sensor Rear LH90980-12225
S14Side Airbag Sensor Rear RH
S15Seat Heater (Driver's Seat Cushion)
S16Seat Heater (Front Passenger's Seat
Cushion)90980-10794
S17Seat Position Sensor90980-12195
S18Side Airbag Squib LH90980-1 1864S19Side Airbag Squib RH90980-1 1864
T 1Theft Deterrent Horn90980-10619
T 4Telescopic Motor90980-10799
T 5Theft Deterrent ECU90980-12169
T 7Tilt and Telescopic ECU90980-10799
T 8Tilt and Telescopic ECU90980-10848
T 9Tilt Motor90980-10799
T10Ignition Key Cylinder Light90980-12092T10Transponder Key Amplifier90980-12092
T11Turn Signal Flasher90980-10799
T12Trailer Socket82824-34030
T13Tweeter LH90980-1 1300T14Tweeter RH90980-1 1300
T15Towing Converter Relay90980-1 1535
T16Throttle Control Motor and Sensor90980-1 1858
T17Turbine Speed Sensor90980-1 1156
T18Towing Brake Controller90980-1 1603
T19Transponder Key Computer90980-1 1911
T20Television Camera90980-12381
T21Television Camera ECU90980-12169
T22Television Camera ECU90980-10997
T23Towing Hitch Relay82660-20340
U 1Unlock Warning SW90980-10860
V 1Vapor Pressure Sensor90980-1 1143V 2Vehicle Speed Sensor (Combination Meter)90980-1 1143
V 3Vehicle Speed Sensor (Electronically
Controlled Transmission)
90980-1 1156
V 4VSV (EVAP)
90980 1 1156
V 6Vanity Light LH90980-1 1918V 7Vanity Light RH90980-1 1918
V 8VSC Warning Buzzer90980-10906
V 9VSV (Canister Closed Valve)90980-1 1162
V10VSV (Pressure Switching Valve)90980-1 1859
W 1Washer Motor90980-1 1294
W 4Woofer (Speaker)90980-10795
Y 1Yaw Rate Sensor90980-12080
Z 1Option Connector (Glass Breakage Sensor)90980-10825