1998 TOYOTA LAND CRUISER brake sensor

- DIAGNOSTICSENGINE
DI-43
236 Author
: Date
:
2004 LAND CRUISER (RM1071U)P0617
(DI-296)
Starter Relay Circuit High

Park/neutral position switch

Starter relay circuit

Ignition switch

ECM

P0657
(DI-294)Actuator Supply Voltage Circuit /
Open
ECM
P0724
(DI-424)Brake Switch ºBº Circuit High

Short in stop light switch signal circuit

Stop light switch

ECM

P2102
(DI-302)Throttle Actuator Control Motor
Circuit Low
Open in throttle control motor and sensor circuit

Throttle control motor and sensor

ECM

P2103
(DI-302)Throttle Actuator Control Motor
Circuit High

Short in throttle control motor and sensor circuit

Throttle control motor and sensor

Throttle valve

Throttle body

ECM

P2111
(DI-306)Throttle Actuator Control System
- Stuck Open

Throttle control motor and sensor circuit

Throttle control motor and sensor

Throttle valve

Throttle body

P2112
(DI-306)Throttle Actuator Control System
- Stuck Closed

Throttle control motor and sensor circuit

Throttle control motor and sensor

Throttle valve

Throttle body

P2118
(DI-310)Throttle Actuator Control Motor
Current Range/Performance
Open in throttle control motor and sensor power source circuit

ETCS fuse

ECM

P2119
(DI-315)Throttle Actuator Control Throttle
Body Range/Performance
Electric throttle control system

Throttle body
P2120
(DI-318)Throttle/Pedal Position Sensor/
Switch ºDº Circuit
Accelerator pedal position sensor

ECM
P2121
(DI-331)Throttle/Pedal Position Sensor/
Switch ºDº Circuit Range/Perfor-
mance

Accelerator pedal position sensor
P2122
(DI-318)Throttle/Pedal Position Sensor/
Switch ºDº Circuit Low Input

Accelerator pedal position sensor

VCPA circuit open

VPA circuit open or ground short

ECM

P2123
(DI-318)Throttle/Pedal Position Sensor/
Switch ºDº Circuit High Input
Accelerator pedal position sensor

EPA circuit open

ECM

P2125
(DI-318)Throttle/Pedal Position Sensor/
Switch ºEº Circuit
Accelerator pedal position sensor

ECM
P2127
(DI-318)Throttle/Pedal Position Sensor/
Switch ºEº Circuit Low Input

Accelerator pedal position sensor

VCP2 circuit open

VPA2 circuit open or ground short

ECM

P2128
(DI-318)Throttle/Pedal Position Sensor/
Switch ºEº Circuit High Input
Accelerator pedal position sensor

EPA circuit open

ECM

P2135
(DI-84)Throttle Pedal Position Sensor/
Switch ºAº / ºBº Voltage Correla-
tion
VTA1 and VTA2 circuit are short-circuited

Throttle control motor and sensor

ECM


DI-16
- DIAGNOSTICSENGINE
209 Author
: Date
:
FUEL SYS #1
Fuel system status (Bank1)/
OL or CL or OLDRIVE or OL-
FAULT or CLFAULT
Idli ft i CL

OL: Open Loop-has not yet sa-
tisfied conditions to go closed
loop.

CL: Closed Loop-using oxygen
sensor(s) as feed back for fuel
control.

OL DRIVE: Open loop due to
dri ing conditions (Po er enrich
FUEL SYS #2
Fuel system status (Bank2)/
OL or CL or OLDRIVE or OL-
FAULT or CLFAULT
Idling after warming up: CLdriving conditions (Power enrich-
ment, deceleration enlargement).

OL FAULT: Open loop due to de-
tected system fault.

CL FAULT: Closed loop, but fault
with at least one oxygen sensor
may be using single oxygen sen-
sor for fuel control.
FC IDLIdle fuel cut/
ON or OFFFuel cut operation: ON
FC IDL = ºONº when throttle valve
fully closed and engine speed is
over 1,500 rpm.
MILMIL status/
ON or OFFMIL ON: ON-
STARTER SIGStarter signal/
ON or OFFCranking: ON-
A/C SIGA/C signal/
ON or OFFA/C ON: ON-
PNP SW [NSW]Park/neutral position switch signal/
ON or OFFP or N range: ON-
ELECT LOAD SIGElectrical load signal/
ON or OFFDefogger switch ON: ON-
STOP LIGHT SWStop light switch/
ON or OFF
Brake pedal depressed: ON

Brake pedal released: OFF-
FUEL PMP SP CTLFuel pump speed control status/
ON or OFFIdling: ON-
FUEL PUMP/SPDFuel pump/speed status/
ON/H or OFF/M, LIdling: ON-
A/C MAG CLUTCHA/C magnet clutch status/
ON or OFFA/C magnet clutch ON: ON-
EVAP VSVVSV status for EVAP control/
ON or OFFVSV operating: ONVSV for EVAP is controlled by the
ECM (ground side duty control)
IGNITIONIgnition counter/
Min.: 0, Max.: 4000 to 400-
VAPOR PRESSVapor pressure/
Min.: -4.125 kPa, Max.: 2.125 kPaFuel tank cap removed:
0 kPaPressure inside of fuel tank as
read by the vapor pressure sen-
sor.
CYL #1 - CYL #8Misfire ratio of the cylinder/
Min.: 0%, Max.: 50%0%This item is displayed in only idling
*1: If no conditions are specifically stated for ºldlingº, it means the shift lever is in the N or P position, the A/C
switch is OFF and all accessory switches are OFF.

EM-2
- ENGINE MECHANICALCO/HC
1575 Author
: Date
:
2004 LAND CRUISER (RM1071U)
6. TROUBLESHOOTING
HINT:
If the CO/HC concentration does not comply with the regula-
tions, perform troubleshooting in the order given below.
See the table below for possible causes, and then inspect and
correct the applicable causes if necessary.
COHCProblemsCauses
NormalHighRough idle1. Faulty ignitions:

Incorrect timing

Fouled, shorted or improperly gapped plugs
2. Incorrect valve clearance
3. Leaky intake and exhaust valves
4. Leaky cylinders
LowHighRough idle
(fluctuating HC reading)1. Vacuum leaks:

PCV hoses

Intake manifold

Throttle body

Brake booster line
2. Lean mixture causing misfire
HighHighRough idle
(Black smoke from exhaust)1. Restricted air filter
2.Faulty SFI systems:

Faulty pressure regulator

Defective ECT sensor

Faulty ECM

Faulty injectors

Faulty throttle position sensor

Faulty MAF meter

[N]
[O]
[P]
[Q]
[R]
[S]
[T]
[U]
2004 LAND CRUISER (EWD548U)
6B HOW TO USE THIS MANUAL
Current is applied at all times through the STOP fuse to TERMINAL 2 of the stop light SW.
When the ignition SW is turned on, current flows from the GAUGE fuse to TERMINAL 8 of the light failure sensor, and also flows
through the rear lights warning light to TERMINAL 4 of the light failure sensor.
Stop Light Disconnection Warning
When the ignition SW is turned on and the brake pedal is pressed (Stop light SW on), if the stop light circuit is open, the current
flowing from TERMINAL 7 of the light failure sensor to TERMINALS 1, 2 changes, so the light failure sensor detects the
disconnection and the warning circuit of the light failure sensor is activated.
As a result, the current flows from TERMINAL 4 of the light failure sensor to TERMINAL 11 to GROUND and turns the rear lights
warning light on. By pressing the brake pedal, the current flowing to TERMINAL 8 of the light failure sensor keeps the warning
circuit on and holds the warning light on until the ignition SW is turned off.
S6 Stop Light SW
2-1 : Closed with the brake pedal depressed
L4 Light Failure Sensor
1, 2, 7-Ground : Approx. 12 volts with the stop light SW on
4, 8-Ground : Approx. 12 volts with the ignition SW at ON position
11-Ground : Always continuity
: Parts Location
CodeSee PageCodeSee PageCodeSee Page
C734L436R737
H1736R637S635
: Relay Blocks
CodeSee PageRelay Blocks (Relay Block Location)
118R/B No.1 (Instrument Panel Brace LH)
: Junction Block and Wire Harness Connector
CodeSee PageJunction Block and Wire Harness (Connector Location)
IB20Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
3C22Instrument Panel Wire and J/B No.3 (Instrument Panel Brace LH)
: Connector Joining Wire Harness and Wire Harness
CodeSee PageJoining Wire Harness and Wire Harness (Connector Location)
IE142Floor Wire and Instrument Panel Wire (Left Kick Panel)
BV150Luggage Room Wire and Floor Wire (Luggage Room Left)
: Ground Points
CodeSee PageGround Points Location
BL50Under the Left Center Pillar
BO50Back Panel Center
: Splice Points
CodeSee PageWire Harness with Splice PointsCodeSee PageWire Harness with Splice Points
I544Cowl WireB1850Luggage Room Wire
System Outline
Service Hints

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)
73 G
Position of Parts in Body
P 8 Parking Brake SW
P 9 Power Outlet (Luggage Compartment)
P 10 Power Vent Window Motor LH
P 11 Power Vent Window Motor RH
P 12 Power Window Master SW
P 14 Power Window Motor Front LH
P 15 Power Window Motor Front RH
P 16 Power Window Motor Rear LH
P 17 Power Window Motor Rear RH
P 18 Power Window Control SW Front RH
P 19 Power Window Control SW Rear LH
P 20 Power Window Control SW Rear RH
P 21 Pretensioner LH
P 22 Pretensioner RH
R 8 Rear A/C Control SW
R 9 Rear Air Mix Control Servo Motor
R 10 Rear Combination Light LH
R 11 Rear Combination Light LH
R 12 Rear Combination Light RH
R 13 Rear Combination Light RH
R 14 Rear Cooler Blower Motor
R 15 Rear Cooler Magnetic Valve
R 16 Rear Cooler Power Transistor
R 17 Rear Cooler Relay
R 19 Rear Door Speaker LH
R 20 Rear Door Speaker RH
R 21 Rear Evaporator Temp. Sensor
R 22 Rear Heater Blower Motor
R 25 Rear Heater Power Transistor
R 26 Rear Inlet Air Temp. SensorR 27 Rear Interior Light
R 28 Rear Window Defogger
R 29 Rear Window Defogger
R 30 Rear Wiper Motor
R 31 Rear Wiper Relay
R 32 Remote Control Mirror LH
R 33 Remote Control Mirror RH
R 34 Room Temp. Sensor (Rear)
S 6 Stereo Component Amplifier
S 7 Stereo Component Amplifier
S 11 Side Airbag Sensor Front LH
S 12 Side Airbag Sensor Front RH
S 13 Side Airbag Sensor Rear LH
S 14 Side Airbag Sensor Rear RH
T 12 Trailer Socket
T 13 Tweeter LH
T 14 Tweeter RH
T 15 Towing Converter Relay
T 20 Television Camera
T 21 Television Camera ECU
T 22 Television Camera ECU
T 23 Towing Hitch Relay
V 1 Vapor Pressure Sensor
V 6 Vanity Light LH
V 7 Vanity Light RH
V 10 VSV (Pressure Switching Valve)
W 4 Woofer (Speaker)

2004 LAND CRUISER (EWD548U)
378I GROUND POINT
Turn Signal
Flasher Seat Heater SW
(
Dr iver' s Seat)
Seat Heater SW
(
Front Passenger' s
Seat)W- B
W- BW- B Power Outlet
(
Rear Console Box)
Tilt and
Telescopic ECUW- B
W- B
J 3
A
Center Airbag
Sensor
Assembly Multi- DisplayW- B
IG1 NO. 3 RelayIP22
AF
B H
B H
B H3D8
3D10
3D42
3D1
A E
B D
B D
II W- B
W- B
W- B
J 1
J18(
A)
, J19(
B) W- B AA J 9(
A)
, J10(
B)
W- B
3F6
3F9
IH (
E1)
(
E2)
(
CG)
Gateway ECUW- B
W- B3E35
A
A
W- B
Auto Antenna MotorFront Wiper Motor
Door Key Lock and
Unlock SW RH
Door Lock Motor
Fron t RH
Door Unlock
Detection SW
Fron t RH
Door Lock
Control SW RH
(
EW)
(
TB) E 5 3B1
EB
I 9W- B
W- BW- B W- B
A J16
3K31
W- B
(
EL) W- B
W- B
W- B W- B
Towing Brake
Controller 3I9
W- B
B 8W- B
W- B
II3 3
W- B 3Q58 SB W- B
SB
3E34
W- BRemote Control
Mirror RH W- B W- B BT1 4W- B
W- B
W- B
3B2
A W- BW- B
W- BW- B Data Link
Connector 1 W- B
Gateway ECUW- B
H
B
DVD Automatic
ChangerAF
W- B
14
2Q
IG(
GN D2)
Body ECU 3Q40
W- BW- B 6
3ECenter Diff. Lock
Control Relay
W- B Junction
Connector
Junction Connector
Junction
ConnectorJunction
Connector Junction Connector (
GND)
Blower Motor
Controller2
3H W- B
3D9Power Window
Contr ol SW
Front RH (
GN D)
(
SEL1)
Combination
SW
Combination
SW
Combination
SW
BR (
GND1)

2004 LAND CRUISER (EWD548U)
M OVERALL ELECTRICAL WIRING DIAGRAM
9
101112
12 LAND CRUISER (
Cont' d)(
Cont. next page)
L D 21
15 5CSB
3C 2C
P- BB- L
De t e ct i o n S W
(
Cent er Diff . Loc k)
<14- 3> De t ec t i on SW
(
Transfer L Position)
<14- 3>
13 IG1
13B 11B 5C 4C 6C 7C 15C1B 12 B
Parking Brake
SW< 1- 36>
13 IU4
SB
SB
SB
SB
W B- R B- R
L- R
L- B
L- W
Y- G
R- WP- B
6BD3 7BD3
5BF2 6BF2
2 1 18 B 19 B
9BD3 10BD3
1BF2 2BF2
2 1 20 B 21 B
A A 9B
A
32 5D
K D 20
R G (
*1) B W (
*1)
R G (
*1) B W (
*1)
R G (
*1) B W (
*1)
W
B
G
R
EXI EXI2 PKB TC TS WA BRL VSCW I ND WT INFR
IG1 RL+ RL- RR+ RR- RSS
14 A
BSB
SB
A4 1(
A)
, A42(
B)
, A43(
C)
, A44(
D)
W- L
Dat a Link Connect or 1
<4- 6><4- 7>
23 C
G W 14 CSS1+
16 IG1SS1-
15 IG1
G
J
W W
G
I 3Q 53Q63Q27
3A 43A11 3B18
12 IG1 12 IU4 3Q26
3B 14A
B
C
E
F
G
H SB
SB
SB
SB
SB
SB
SB
SB
L- R
L- W
Y- G
M
LG L- R
L- W L- R
R- L SB
D
L- B
J 2
15IA2 14IA2 6IA2 5IA2 7IA2 16IA2
CY- GA36 A35
VSC
+BO TRI G
11 BD3 8 BD3
ABS Speed Sensor
Rear LHABS Speed Sensor
Rear RHABS & BA & TRAC & VSC ECU
J unc tion
Connec tor
* 1 : shielded
Dat a Link Connect or 3
<4- 6><4- 7>