1998 TOYOTA LAND CRUISER fuel pressure

A05517
A05516
A08655
A03190
White Painted
Mark
A17671A19482
EM-68
- ENGINE MECHANICALCYLINDER HEAD
1641 Author
: Date
:
2004 LAND CRUISER (RM1071U)
14. INSTALL REAR WATER BYPASS JOINT
(a) Install 2 new gaskets to the cylinder head.
(b) Install the 4 nuts holding the water bypass joint to the cyl-
inder heads. Alternately tighten the nuts.
Torque: 18 N´m (185 kgf´cm, 13 ft´lbf)
15. INSTALL FRONT WATER BYPASS JOINT
Install 2 new gaskets and the water bypass joint with the 4 nuts.
Alternately tighten the nuts.
Torque: 18 N´m (185 kgf´cm, 13 ft´lbf)
16. INSTALL WATER INLET AND INLET HOUSING AS-
SEMBLY (See page CO-8)
17. ASSEMBLE UPPER AND LOWER INTAKE MAN-
IFOLDS
(a) Install the 2 delivery pipes and the 8 injectors (See page
SF-27).
(b) Install new 2 gaskets, the fuel pressure regulator and the
fuel pulsation damper.
(c) Install the fuel return hose to the lower intake manifold
with the 3 bolts.
(d) Connect the fuel return hose to the fuel pressure regula-
tor.
18. INSTALL INTAKE MANIFOLD ASSEMBLY
(a) Place 2 new gaskets on the cylinder heads with white
painted mark facing upward.
NOTICE:

Align the port holes of the gasket and cylinder head.

Be careful of the installation direction.
(b) Place the intake manifold assembly on the cylinder
heads.
(c) Install and uniformly tighten the 6 bolts and the 4 nuts in
several passes.
Torque: 18 N´m (185 kgf´cm, 13 ft´lbf)

A05514
A19472
A05562
B01208
A17668A19481
(p)
(o)
(n)
(m)(r)
(q)
- ENGINE MECHANICALCYLINDER HEAD
EM-69
1642 Author
: Date
:
2004 LAND CRUISER (RM1071U)
(d) Install the EVAP pipe to the intake manifold with the 2
bolts.
(e) Connect the wire protector to the intake manifold with the
2 bolts.
(f) Install the engine wire to the engine hanger.
(g) Install the engine wire to the LH No.1 timing belt rear
plate.
(h) Install the engine wire to the bracket.
(i) Connect the wire protector to the rear water bypass joint
and RH cylinder head with the 2 bolts.
(j) Install the 2 ground cables to the RH and LH cylinder
head.
(k) Install the guide for A/T bracket to the LH cylinder head.
(l) Connect the 2 wire clamps to the wire clamp bracket on
the RH delivery pipe.
(m) Connect the fuel pressure regulator vacuum hose to the
fuel pressure regulator pipe.
(n) Connect the PCV hose to the PCV valve on the LH cylin-
der head.
(o) Connect the EVAP hose (from charcoal canister) to the
VSV for EVAP.
(p) Connect the EVAP hose (from charcoal canister) to the
EVAP pipe on the intake manifold.
(q) Connect the EVAP hose (from intake air connector) to
EVAP pipe on the the intake manifold.

A17668A19481
(k)
(j)(i)
(n)(m)
(l)
B15320B16469No. 1 Water Bypass Hose
A17670
Wire Clamp
A08664
Wire Protector
Ground Cable
EM-36
- ENGINE MECHANICALCYLINDER HEAD
1609 Author
: Date
:
2004 LAND CRUISER (RM1071U)
(h) Disconnect the fuel pressure regulator vacuum hose from
the fuel pressure regulator pipe.
(i) Disconnect the PCV hose from the PCV valve on the LH
cylinder head.
(j) Disconnect the EVAP hose (from charcoal canister) from
VSV for EVAP.
(k) Disconnect the EVAP hose (from charcoal canister) from
the EVAP pipe on the intake manifold.
(l) Disconnect the EVAP hose (from intake air connector)
from the EVAP pipe on the intake manifold.
(m) Disconnect the PS air hose from the intake manifold.
(n) Disconnect the No.1 water bypass hose from the front wa-
ter by-pass joint.
(o) Disconnect the 2 wire clamps from the wire clamp bracket
on the RH delivery pipe.
(p) Remove the 2 bolts and disconnect the engine wire pro-
tector from the rear water bypass joint and the RH cylinder
head.
(q) Remove the guide for A/T bracket from the LH cylinder
head.
(r) Remove the 2 ground cables from the RH and LH cylinder
head.

A19472
A17671A19482
A17679
A09148
EVAP Pipe
A08655
- ENGINE MECHANICALCYLINDER HEAD
EM-37
1610 Author
: Date
:
2004 LAND CRUISER (RM1071U)
(s) Remove the 2 bolts and disconnect the engine wire pro-
tector from the intake manifold.
(t) Remove the engine wire from the engine hanger.
(u) Remove the engine wire from the wire bracket.
(v) Remove the RH rear and the LH front V-bank cover
brackets.
(w) Remove the 6 bolts, the 4 nuts, the intake manifold as-
sembly and the 2 gaskets.
13. DISASSEMBLE UPPER AND LOWER INTAKE MAN-
IFOLDS
(a) Remove the throttle body (See page SF-36).
(b) Remove the 13 bolts, the 3 nuts, the upper intake man-
ifold and the gasket.
(c) Disconnect the EVAP hose from the upper intake man-
ifold, and remove the accelerator cable clamp and VSV
for EVAP.
(d) Remove the bolt, the union, the 2 gaskets and the brake
booster tube from the upper intake manifold.
(e) Remove the 2 bolts and the EVAP pipe from the intake
manifold.
(f) Disconnect the fuel return hose from the fuel pressure
regulator.
(g) Remove the 3 bolts holding the fuel return hose from the
lower intake manifold.
(h) Remove the fuel pressure regulator, the fuel pressure
pulsation damper and the 2 gaskets.
(i) Remove the bolt and the rear fuel pipe.
(j) Remove the 2 delivery pipes and the 8 injectors (See
page
SF-22).

2004 LAND CRUISER (EWD548U)
68G ELECTRICAL WIRING ROUTING
Position of Parts in Engine Compartment
A 1 A/C Ambient Temp. Sensor
A 4 Pressure SW
A 5 A/C Lock Sensor
A/C Magnetic Clutch
A 12 ABS Speed Sensor Front LH
A 13 ABS Speed Sensor Front RH
A 15 Airbag Sensor Front LH
A 16 Airbag Sensor Front RH
A 17 Auto Antenna Motor
A 37 ABS & BA & TRAC & VSC Actuator
A 38 ABS & BA & TRAC & VSC Actuator
A 39 ABS & BA & TRAC & VSC Actuator
A 40 ABS & BA & TRAC & VSC Actuator
C 1 Camshaft Position Sensor
C 2 Center Diff. Lock Control Motor
C 3 Crankshaft Position Sensor
D 1 Data Link Connector 1
D 2 Daytime Running Light Relay No.3
D 3 Daytime Running Light Relay No.3
D 4 Detection SW (Center Diff. Lock)
D 5 Detection SW (Transfer L Position)
D 6 Detection SW (Transfer Neutral Position)E 1 Electronically Controlled Transmission Solenoid
E 2 Engine Coolant Temp. Sensor
E 3 Engine Hood Courtesy SW
F 1 Front Fog Light LH
F 2 Front Fog Light RH
F 3 Front Turn Signal Light LH
Side Marker Light LH
F 4 Front Turn Signal Light RH
Side Marker Light RH
F 5 Front Wiper Motor
F 14 Fuel Pump Resistor
F 15 Fusible Link Block
F 16 Fusible Link Block
F 17 Fusible Link Block
F 18 Fusible Link Block
F 19 Fusible Link Block
G 1 Generator
G 2 Generator

2004 LAND CRUISER (EWD548U)
377I
Seat Heater
(
Dr iver' s Seat
Cushi on) Power Seat Control
SW (
Driver' s Seat)
B27 W- B W- B
Lumbar Support
Control SW
(
Dr iver' s Seat)W- BBM38
W- BE 2HTR Relay
Headlight LH
(
Low) Parking Light LH
Front Tur n Signal
Light LH
Side Marker
Light LH
Fron t Fog
Light LH
Fron t Fog
Light RH
Parking Light RH
Front Tur n Signal
Light RH
Side Marker
Light RH
Headlight RH
(
Low)
Fuel Pump
Fuel Sender
B 41B56
44
1B
1B43
1A24 1A36
1A37
E 2 1A30
EAW- BW- B
W- B
W- B
W- B
W- B
W- B
W- B
W- B
W- B
W- B
Rear Heater Power
Transistor
W- BW- B
W- B
W- B
W- B
W- B W- B
W- B
Pressure SW
W- B
W- B
B 4 BA310
W- B
BA412
W- B Power Window
Control SW
Rear LHW- B W- B
W- B
(
GND2)
(
GND1)
(
PHG)
(
GND3)
(
GND1) (
GND)
(
PLG)
ABS & BA &
TRAC & VSC
ACTUATOR
(
GND4)
ABS & BA &
TRAC & VSC
ECU
Rheostat
Power Quarter
Window SW LH
Power Quarter
Window SW RH
Remote Control
Mir ror SW(
GND2)
I 2 E14 W- B W- B W- B
W- B
W- B
W- B
W- B
W- B
W- BW- B W- BW- B
BB182K 331A341
1
1 W- B
W- B
W- BIG1 NO. 1 Relay
EFI OR ECD Relay
STARTER Relay 1B39
W- B
1B35 1B40
W- B
Daytime Running
Light Relay No. 3 E15Engine Hood
Courtesy SW W- B 1A43
W- B W- B
Glove Box Light 2Q43
IQ12
W- B SB SBAAEE E14
W- B
W- B
W- B W- B
W- B
W- B
W- B
SB
ASB I18
IF2 11
A
SB
W- B W- B
W- B
W- B
W- BJ12
W- B
W- B Junction
Connector
(
GND)
(
SEL2)

2004 LAND CRUISER (EWD548U)
218Electronically Controlled Transmission and A/T Indicator
Previous automatic transmissions have selected each gear shift using mechanically controlled throttle hydraulic pressure,
governor hydraulic pressure and lock-up hydraulic pressure. The electronically controlled transmission, however, electrically
controls the line pressure, throttle pressure, lock-up pressure and accumulator pressure etc. through the solenoid valve. The
electronically controlled transmission is a system which precisely controls gear shift timing and lock-up timing in response to
the vehicle's driving conditions and the engine condition detected by various sensors. It makes smooth driving possible by
shift selection for each gear which is the most appropriate to the driving conditions at that time, and by preventing downing,
squat and gear shift shock when starting off.
1. Gear Shift Operation
When driving, the engine warm up condition is input as a signal to TERMINAL THW of the engine control module from the
engine coolant temp. sensor and the vehicle speed signal from vehicle speed sensor is input to TERMINAL SP2+ of the
engine control module. At the same time, the throttle valve opening signal from the throttle position sensor is input to
TERMINALS VTA1 and VTA2 of the engine control module as throttle angle signal.
Based on these signals, the engine control module selects the best shift position for the driving conditions and sends current
to the electronically controlled transmission solenoid.
2. Line Hydraulic Pressure Control
The engine control module adjusts the line hydraulic pressure to the optimal level by controlling TERMINAL SLT+ of the
module according to the engine torque data. This realizes the smooth gear shifting.
3. High Response Gear Shifting Control
The engine control module performs the high response engine torque up control to control the ignition-timing lag as well as
opening the electronic throttle when shifting down. By doing this, the gear shifting is performed in a short period of time.
Moreover, the engine control module uses the orifice switching control, which optimizes the speed of applying and reducing
the hydraulic pressure. And it realizes the fine shifting condition by applying and reducing hydraulic pressure slowly when
the gear shifting shock is important and quickly when the high response is required.
4. Clutch Hydraulic Pressure Control
The engine control module controls the clutch operation in the optimal timing and with the best hydraulic pressure according
to the engine torque data and the number of the clutch revolution
5. Lock-Up and Flexible Lock-Up Control
The engine control module carries out the lock-up control by controlling the TERMINAL SLU+ of the module according to
the shift position, vehicle speed, throttle opening degree and running conditions. The engine control module also steadily
keeps applying the lock-up clutch a delicate slippage to improve the transmission efficiency (Fuel efficiency) of the torque
converter.
6. Stop Light SW Circuit
If the brake pedal is depressed (Stop light SW on) when driving in lock-up condition, a signal is input to TERMINAL STP of
the engine control module. The engine control module operates and cuts the current to the solenoid to release lock-up.
7. Ai-Shift Control
The engine control module judges whether the road is downslope or upslope by detecting the throttle opening degree or the
vehicle's speed. Moreover it can expect the winding roads by detecting the turning condition of the vehicle. The engine
control module keeps unnecessary shifting up from the fourth gear from operating and carries out the automatic shifting
down to the third gear in order to control the vehicle running according to the road conditions. The engine control module
also reads the driver's intention during driving from his (her) accelerating operation and the running conditions of the vehicle.
As a result of that, ideal shifting patters for each driver are automatically selected without any switching operations.
8. Electronically Controlled Transmission Pattern Select SW Circuit
When the electronically controlled transmission pattern select SW is switched to PWR, a signal is input to TERMINAL PWR
of the engine control module. This enables shift-up and shift-down at a higher speed range.
9. Transfer Shift Operation
When the transfer shift lever is moved to L position, a signal is input into TERMINAL L4 of the engine control module.
In addition when the transfer shift lever is moved to N position a signal is input to engine control module TERMINAL TFN.
The engine control module detects the transfer condition through this.
System Outline

2004 LAND CRUISER (EWD548U)
352Combination Meter
SRS
Fuel
Charge
A/T OIL
TEMP
C 11
SB
D 7
SB
C 4
SB
C 7
IX 2 9
SB
E E
SB
D D
EC(
Shielded)
W
J17 J12
O 2C 17 C16
SB
SB
IU4 6IU47
G- W
G- B
4Ie1 Ie13
12
G- W
G- B
M 9
BR
C12(
A)
, C13(
B)
, C14(
C)
, C15(
D)
Center Airbag Sensor AssemblyRheostat Buckle SW LHUART- UART+
(
*2) (
*2)
(
*2) (
*2)
(
*2) (
*2)
Combi nati on Meter
Multi- Display Oil Pressure
SenderJunction
Connector Junction
Connector
V
V V
V1
MAINT
REQD Heat Wire