1986 TOYOTA LAND CRUISER ignition

2004 LAND CRUISER (EWD548U)
11 3
2 1
WB-R
C 6
I152 1
B- W B- R
C 5
I16
B- R
E 5(
A)
, E 6(
B)
, E 7(
C)
, E 8(
D)
, E 9(
E) 6D 356C 122E 272B 6
1A 401B 38
C 21EE1 2
4
B- O B- OB B- O
L
G 1
A 9
IGT1B
A 8
IGT2
R
A 25
IGT3
L
A 11
IGT4
G
A 12
IGT5
Y
A 26
IGT6
B- Y
A 13
IGT7
B- L
A 10
IGT8
L- B
A 24
IGF1
B- W
A 23
IGF2
B- R
Ignition Coil and Igniters
1 2A 19
G- B BR- WIN2 8
IW3 6
L- Y
A 30
L- Y L- Y
5IN2 2
IW3 5
G- W
A 29
G- W G- W
4IN2 10
IW3 8
Y- B
A 20
Y- B Y- B
27IW3 IN27
1
BR
BR
BR- W
If1 3A 28
HTB 33 B22 B4 B 23
13 31
E 2
M 1 VG E2G THA E2
BR- W BR- W
OX
+B E1OX
H 7
H 5
HT
+B E1
(
Shielded)
(
Shielded)
BR- W
B- Y BR- W
B- Y BR- W
B- Y BR- W BR- W BR- W
B- Y
B- Y
WY
B
R B- Y
BR- W BR- WB- Y
24 24
(
Shielded) (
Shielded)
THW VG E2G THA E2 HT2A OX2A OX1A HT1A#7 #8 RL
3+B
B- Y
E11
E10E10
E10 E10E10 E10 E10
Engine Coolant Temp. Sensor
Engine Control ModuleGen erat or
Heated Oxygen Sensor
(
Bank 1 Sensor 1) Heated Oxygen Sensor
(
Bank 2 Sensor 1)Injector No. 7
Injector No. 8
Mass Air Flow MeterB
B- O
If1 8

2004 LAND CRUISER (EWD548U)
11 8Engine Control
The engine control system utilizes a microcomputer and maintains overall control of the engine, transmission etc. An outline
of the engine control is given here.
1. Input Signals
(1) Engine coolant temp. signal circuit
The engine coolant temp. sensor detects the engine coolant temp. and has a built-in thermistor with a resistance which
varies according to the engine coolant temp. The engine coolant temp. is input into TERMINAL THW of the engine
control module as a control signal.
(2) Intake air temp. signal circuit
The intake air temp. sensor is installed in the mass air flow meter and detects the intake air temp., which is input as a
control signal to TERMINAL THA of the engine control module.
(3) Oxygen sensor signal circuit
The oxygen density in the exhaust emission is detected and is input as a control signal from the heated oxygen sensors
to TERMINALS OX1A, OX1B, OX2A, OX2B of the engine control module.
(4) RPM signal circuit
The camshaft position is detected by the camshaft position sensor and is input into TERMINAL G2+ of the engine
control module as a control signal. Also, the engine RPM is detected by the crankshaft position sensor and the signal is
input into TERMINAL NE+ of the engine control module.
(5) Throttle position sensor signal circuit
The throttle position sensor detects the throttle valve opening angle as a control signal, which is input into TERMINALS
VTA1, VTA2 of the engine control module.
(6) Vehicle speed circuit
The vehicle speed sensor (Combination meter) detects the vehicle speed, and the signal is input into TERMINAL SPD
of the engine control module via the combination meter.
(7) Battery signal circuit
Voltage is constantly applied to TERMINAL BATT of the engine control module. When the ignition SW is turned on, the
voltage for engine control module start up power supply is applied through the EFI OR ECD relay, to TERMINALS +B,
+B2 of the engine control module. The current from the IGN fuse flows to TERMINAL IGSW of the engine control
module, and voltage is constantly applied to TERMINAL +BM.
(8) Intake air volume signal circuit
The intake air volume is detected by the mass air flow meter, and is input as a control signal to TERMINAL VG of the
engine control module.
(9) Stop light SW signal circuit
The stop light SW is used to detect whether the vehicle is braking or not, and the signal is input into TERMINAL STP of
the engine control module as a control signal.
(10) Starter signal circuit
To confirm whether the engine is cranking, the voltage applied to the starter motor when the engine is cranking is
detected, and is input into TERMINAL STA of the engine control module as a control signal.
(11) Engine knock signal circuit
Engine knocking is detected by the knock sensors, and is input into TERMINALS KNK1, KNK2 of the engine control
module as a control signal.
System Outline

2004 LAND CRUISER (EWD548U)
11 9
2. Control System
*SFI system
The SFI system monitors the engine condition through the signals input from each sensors to the engine control module.
The control signal is sent to the engine control module TERMINALS #1, #2, #3, #4, #5, #6, #7, #8 to operate the injector
(Fuel injection). The SFI system controls the fuel injection by the engine control module in response to the driving
conditions.
*ESA system
The ESA system monitors the engine condition through the signals input from each sensors to the engine control module.
The best ignition timing is decided according to this data and the data memorized in the engine control module. The
control signal is output to TERMINALS IGT1, IGT2, IGT3, IGT4, IGT5, IGT6, IGT7, IGT8, and these signals control the
igniter to provide the best ignition timing.
*Heated oxygen sensor heater control system
The heated oxygen sensor heater control system turns the heater on when the intake air volume is low (Temp. of exhaust
emission is low), and warms up the heated oxygen sensors to improve their detection performance. The engine control
module evaluates the signals from each sensors, and outputs current to TERMINALS HT1A, HT1B, HT2A, HT2B to
control the heater.
*Fuel pump control system
The engine control module supplies current to TERMINAL FPR, and controls the operation speed of the fuel pump by the
F/PUMP relay.
*ACIS
The ACIS includes a valve in the bulkhead separating the surge tank into two parts. This valve is opened and closed in
accordance with the driving conditions to control the intake manifold length in two stages, for increased engine output in all
ranges from low to high speeds.
*ETCS-i
The ETCS-i controls the engine output at its optimal level in accordance with the opening of the accelerator pedal, under
all driving conditions.
3. Diagnosis System
When there is a malfunction in the engine control module signal system, the malfunctioning system is recorded in the
memory. The malfunctioning system can be found by reading the code displayed on the malfunction indicator lamp.
4. Fail-Safe System
When a malfunction has occurred in any system, there is a possibility of causing engine trouble due to continued control
based on that system. In that case, the fail-safe system either controls the system using the data (Standard values)
recorded in the engine control module memory, or else stops the engine.
E2 Engine Coolant Temp. Sensor
1-2 : Approx. 15.0 kW (-20°C, -4°F)
: Approx. 2.45 kW (20°C, 68°F)
: Approx. 0.32 kW (80°C, 176°F)
E5 (A), E7 (C), E8 (D), E9 (E) Engine Control Module
BATT-E1 : Always 9.0-14.0 volts
+BM-E1 : Always 9.0-14.0 volts
IGSW-E1 : 9.0-14.0 volts with ignition SW at ON or ST position
+B, +B2-E1 : 9.0-14.0 volts with ignition SW at ON or ST position
VC-E2 : 4.5-5.5 volts with ignition SW on
VTA2-E2 : 2.0-2.9 volts with ignition SW on and accelerator pedal released
: 4.6-5.1 volts with ignition SW on and accelerator pedal depressed
VTA1-E2 : 0.4-1.0 volts with ignition SW on and accelerator pedal released
: 3.2-4.8 volts with ignition SW on and accelerator pedal depressed
THA-E2 : 0.5-3.4 volts with idling, intake air temp. 20°C (68°F)
THW-E2 : 0.2-1.0 volts with idling, engine coolant temp. 80°C (176°F)
W-E1 : 9.0-14.0 volts with idling
: Below 3.0 volts with ignition SW on
Service Hints

2004 LAND CRUISER (EWD548U)
126Engine Immobiliser System
T19 Transponder Key Computer
1-Ground : Always approx. 12 volts
2-Ground : Approx. 12 volts with ignition SW at ON or ST position
14-Ground : Always continuity
: Parts Location
CodeSee PageCodeSee PageCodeSee Page
D770E8D70M9B71
D1472E9E70T1071
E5A70J1071T1971
E7C70M5A71U171
:Junction Block and Wire Harness Connector
CodeSee PageJunction Block and Wire Harness (Connector Location)
2D28Dash 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)
3D403E40
Dash Wire and Cowl Side J/B RH (Right Kick Panel)3M43
Dash Wire and Cowl Side J/B RH (Right Kick Panel)
3P43
3Q42Instrument Panel Integration Wire and Cowl Side J/B RH (Right Kick Panel)
4A
4C52Dash Wire and J/B No 4 (Instrument Panel Center)4D52Dash Wire and J/B No.4 (Instrument Panel Center)
4E
7B64Dash Wire and J/B No.7 (Behind the Grove Box)
:Ground Points
CodeSee PageGround Points Location
EC76Rear Bank of Right Cylinder Head
IF78Set Bolt of Cowl Side J/B LH
II78Set Bolt of Cowl Side J/B RH
:Splice Points
CodeSee PageWire Harness with Splice PointsCodeSee PageWire Harness with Splice Points
E1076Engine Wire
Service Hints

2004 LAND CRUISER (EWD548U)
130Headlight
Daytime Running Light Operation
When the engine is started, a signal from the generator is input into TERMINAL (A) 14 of the body ECU. At this time, if the
parking brake lever is pulled up (Parking brake SW ON), the body ECU is not activated, and the daytime running light
system does not operate.
When the parking brake lever is released (Parking brake SW OFF), a signal is input into TERMINAL (B) 2 of the body ECU.
This activates the body ECU and the headlight turns on.
C16 Combination SW
13-16 : Closed with light control SW at HEAD position
8-16 : Closed with dimmer SW at FLASH position
7-16 : Closed with dimmer SW at HIGH or FLASH position
: Parts Location
CodeSee PageCodeSee PageCodeSee Page
B7A70D2A68H469
B8B70D3B68J371
B9C70G168J971
C12A70H169J1371
C14C70H269P873
C1670H369
:Junction Block and Wire Harness Connector
CodeSee PageJunction Block and Wire Harness (Connector Location)
1A24Engine Room Main Wire and Engine Room J/B (Engine Compartment Left)
1B24Engine 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)2G28Dash 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)
3Q42Instrument Panel Integration Wire and Cowl Side J/B RH (Right Kick Panel)
:Connector Joining Wire Harness and Wire Harness
CodeSee PageJoining Wire Harness and Wire Harness (Connector Location)
EE176Engine Room Main Wire and Alternator Wire (Near the Battery)
IG178Engine Room No.2 Wire and Dash Wire (Behind the Combination Meter)
II380Dash Wire and Column Wire (Near the Ignition SW)II580Dash Wire and Column Wire (Near the Ignition SW)
IU382Instrument Panel Integration Wire and Dash Wire (Behind the Glove Box)IU482Instrument Panel Integration Wire and Dash Wire (Behind the Glove Box)
:Ground Points
CodeSee PageGround Points Location
EA76Front Right Side of Fender Apron
IF78Set Bolt of Cowl Side J/B LHIG78Set Bolt of Cowl Side J/B LH
II78Set Bolt of Cowl Side J/B RH
:Splice Points
CodeSee PageWire Harness with Splice PointsCodeSee PageWire Harness with Splice Points
E176Engine Room Main WireE276Engine Room Main Wire
System Outline
Service Hints

2004 LAND CRUISER (EWD548U)
133
C16 Combination SW
11-Ground : Continuity with light control SW at HEAD position, dimmer SW at LOW position and fog light SW at ON position
: Parts Location
CodeSee PageCodeSee PageCodeSee Page
C1670F268J671
F168J371
:Junction Block and Wire Harness Connector
CodeSee PageJunction Block and Wire Harness (Connector Location)
1A24Engine Room Main Wire and Engine Room J/B (Engine Compartment Left)
1B24Engine Room No.2 Wire and Engine Room J/B (Engine Compartment Left)
2A28Engine Room No.2 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)
:Connector Joining Wire Harness and Wire Harness
CodeSee PageJoining Wire Harness and Wire Harness (Connector Location)
IH280Instrument Panel Integration Wire and Column Wire (Near the Ignition SW)
II380Dash Wire and Column Wire (Near the Ignition SW)
:Ground Points
CodeSee PageGround Points Location
EA76Front Right Side of Fender Apron
II78Set Bolt of Cowl Side J/B RH
:Splice Points
CodeSee PageWire Harness with Splice PointsCodeSee PageWire Harness with Splice Points
E1576Engine Room Main Wire
Service Hints

2004 LAND CRUISER (EWD548U)
136Turn Signal and Hazard Warning Light
T11 Turn Signal Flasher
4-Ground : Always approx. 12 volts
1-Ground : Approx. 12 volts with ignition SW at ON or ST position
7-Ground : Always continuity
: Parts Location
CodeSee PageCodeSee PageCodeSee Page
A45A70C2870R1073
A47C70F368R1373
C12A70F468T1171
C15D70J371T1573
C1670J1171
:Junction Block and Wire Harness Connector
CodeSee PageJunction Block and Wire Harness (Connector Location)
1A24Engine Room Main Wire and Engine Room J/B (Engine Compartment Left)
1B24Engine Room No.2 Wire and Engine Room J/B (Engine Compartment Left)
2A28Engine Room No 2 Wire and Cowl Side J/B LH (Left Kick Panel)2B28Engine Room No.2 Wire and Cowl Side J/B LH (Left Kick Panel)
2D28Dash 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)
3A40Engine Room No.2 Wire and Cowl Side J/B RH (Right Kick Panel)
3D40Dash Wire and Cowl Side J/B RH (Right Kick Panel)3E40Dash Wire and Cowl Side J/B RH (Right Kick Panel)
3K40Floor No.2 Wire and Cowl Side J/B RH (Right Kick Panel)
3N43Dash 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)
:Connector Joining Wire Harness and Wire Harness
CodeSee PageJoining Wire Harness and Wire Harness (Connector Location)
EA276Engine Room Main Wire and Engine Room No.2 Wire (Engine Compartment Right)
II380Dash Wire and Column Wire (Near the Ignition SW)
IX182Instrument Panel Integration Wire and Engine Wire (Behind the Glove Box)
BD286Floor No.3 Wire and Floor No.1 Wire (Left Rear Side Quarter Panel)
BL588Floor No.2 Wire and Floor No.3 Wire (Right Side of Rear Floor Crossmember)
:Ground Points
CodeSee PageGround Points Location
EA76Front Right Side of Fender Apron
EC76Rear Bank of Right Cylinder Head
EE76Front Left Side of Fender Apron
IF78Set Bolt of Cowl Side J/B LH
II78Set Bolt of Cowl Side J/B RH
BK86Front Side Under the Front Passenger's Seat
BM86Left Rear Side Quarter Panel
:Splice Points
CodeSee PageWire Harness with Splice PointsCodeSee PageWire Harness with Splice Points
B1188Floor No.1 WireB2588Floor No.2 Wire
Service Hints

2004 LAND CRUISER (EWD548U)
140Taillight
C16 Combination SW
14-16 : Closed with light control SW at TAIL or HEAD position
: Parts Location
CodeSee PageCodeSee PageCodeSee Page
B7A70F1568P369
B9C70J371R1073
C1670L172R1173
F368L272R1273
F468P269R1373
:Junction Block and Wire Harness Connector
CodeSee PageJunction Block and Wire Harness (Connector Location)
1A24Engine Room Main Wire and Engine Room J/B (Engine Compartment Left)
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)
3E40Dash 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)
IA278Engine Room No.2 Wire and Floor No.1 Wire (Left Kick Panel)
II380Dash Wire and Column Wire (Near the Ignition SW)II580Dash Wire and Column Wire (Near the Ignition SW)
BD286Floor No.3 Wire and Floor No.1 Wire (Left Rear Side Quarter Panel)
BH186Pillar No 1 Wire and Back Door Upper Wire (Left Side of Back Door)BH286Pillar No.1 Wire and Back Door Upper Wire (Left Side of Back Door)
BL388Floor No.2 Wire and Floor No.3 Wire (Right Side of Rear Floor Crossmember)
BP388Pillar No 1 Wire and Floor No 1 Wire (Left Rear Side Quarter Panel)BP488Pillar No.1 Wire and Floor No.1 Wire (Left Rear Side Quarter Panel)
BQ288Back Door Lower Wire and Floor No.1 Wire (Left Rear Side Quarter Panel)
:Ground Points
CodeSee PageGround Points Location
EA76Front Right Side of Fender Apron
EE76Front Left Side of Fender Apron
II78Set Bolt of Cowl Side J/B RH
BJ86Under the Driver's Seat
BK86Front Side Under the Front Passenger's Seat
BM86Left Rear Side Quarter Panel
:Splice Points
CodeSee PageWire Harness with Splice PointsCodeSee PageWire Harness with Splice Points
E276Engine Room Main WireB1588Back Door Upper Wire
B1188Floor No.1 WireB2688Back Door Lower Wire
Service Hints