1998 TOYOTA LAND CRUISER fuel pressure

A07061
TOYOTA
Hand-Held
Tester
DLC3SF10V-02
B04440
Up
Pulsation
Damper
Screw
B04441
SST
(Gauge)SST
(Adaptor)
SST
(Union)
Front Fuel Pipe
Gasket
- SFIFUEL PUMP
SF-7
1706 Author
: Date
:
2004 LAND CRUISER (RM1071U)
FUEL PUMP
ON-VEHICLE INSPECTION
1. CHECK FUEL PUMP OPERATION
(a) Connect a TOYOTA hand-held tester or OBD II scan tool
to the DLC3.
(b) Turn the ignition switch ON, and press the TOYOTA
hand-held tester or OBD II scan tool main switch ON.
NOTICE:
Do not start the engine.
(c) Select the ACTIVE TEST mode on the TOYOTA hand-
held tester or OBD II scan tool.
(d) Please refer to the TOYOTA hand-held tester or OBD II
scan tool operator's manual for further details.
(e) If you have no TOYOTA hand-held tester or OBD II scan
tool, connect the positive (+) and negative (-) leads from
the battery to the fuel pump connector. (See step 3)
(f) Disconnect the fuel return hose from the clamp on the V-
bank cover.
(g) Remove the 2 bolts, nuts and V-bank cover.
(h) Check that the pulsation damper screw pop up when the
fuel pump operates.
If operation is not as specified, check following parts:

Fusible link

Fuses

EFI main relay

Fuel pump

ECM

Wiring connections
(i) Turn the ignition switch OFF.
(j) Disconnect the TOYOTA hand-held tester or OBD II scan
tool from the DLC3.
2. CHECK FUEL PRESSURE
(a) Check the battery positive voltage is above 12 V.
(b) Disconnect the negative (-) terminal cable from the bat-
tery.
(c) Remove the front fuel pipe from the LH delivery pipe (See
page SF-22).
(d) Install the front fuel pipe and SST (pressure gauge) to the
delivery pipe with the 3 lower gaskets and SST (adaptor).
SST 09268-45014 (09268-41190, 90405-06167)
Torque: 39 N´m (400 kgf´cm, 29 ft´lbf)
(e) Wipe off any splattered gasoline.
(f) Reconnect the negative (-) terminal cable to the battery.
(g) Connect a TOYOTA hand-held tester or OBD II scan tool
to the DLC3 (See (a) to (e) in step 1 on the check fuel
pump operation).
(h) Measure the fuel pressure.

B16435
Ohmmeter
5
4
SF-8
- SFIFUEL PUMP
1707 Author
: Date
:
2004 LAND CRUISER (RM1071U)
Fuel pressure:
265 - 304 kPa (2.7 - 3.1 kgf/cm
2, 38 - 44 psi)
If pressure is higher than the specification, replace the fuel
pressure regulator.
If pressure is lower than the specification, check these parts:

Fuel hoses and connections

Fuel pump

Fuel filter

Fuel pressure regulator
(i) Disconnect the TOYOTA hand- held tester from the
DLC3.
(j) Start the engine.
(k) Measure the fuel pressure at idle.
Fuel pressure:
265 - 304 kPa (2.7 - 3.1 kgf/cm
2, 38 - 44 psi)
(l) Stop the engine.
(m) Check that the fuel pressure remains in the specification
below for 5 minutes after the engine stop.
Fuel pressure:
147 kPa (1.5 kgf/cm
2, 21 psi) or more
If the pressure is not as specified, check the fuel pump, pres-
sure regulator and/or the injectors.
(n) After checking the fuel pressure, disconnect the negative
(-) terminal cable from the battery and carefully remove
the SST to prevent gasoline from splashing.
SST 09268-45014
(o) Reinstall the front fuel pipe to the LH delivery pipe (See
page SF-27).
(p) Reconnect the negative (-) terminal cable to the battery.
(q) Check for fuel leaks (See page SF-1).
(r) Reinstall the V-bank cover with the 2 bolts and nuts.
(s) Reconnect the fuel return hose to the clamp on the V-
bank cover.
3. INSPECT FUEL PUMP
(a) Remove the No.1 rear seats.
(b) Remove the 2 rear door scuff plates, the step plates and
the rear seat lock covers.
(c) Pull off the front and rear floor carpets.
(d) Remove the 2 screws and the rear floor service hole cov-
er.
(e) Disconnect the fuel pump & sender gauge connector.
(f) Using an ohmmeter, measure the resistance between ter-
minal 4 and 5.

SF0XX-04
B16440
Pull
Enlarge
Tube Joint
Clip
B16441
Plug
Turn
Turn
- SFIFUEL PUMP
SF-13
1712 Author
: Date
:
2004 LAND CRUISER (RM1071U)
REMOVAL
CAUTION:
Do not smoke or work near an open frame when working
the fuel pump.
1. REMOVE NO.1 REAR SEATS
2. REMOVE REAR DOOR SCUFF PLATES, STEP
PLATES AND REAR SEAT LOCK COVERS
3. REMOVE REAR FLOOR SERVICE HOLE COVER
(a) Take off the front and rear floor carpets.
(b) Remove the 2 screws and rear floor service hole cover.
4. DISCONNECT FUEL PUMP & SENDER GAUGE CON-
NECTOR
5. DISCONNECT FUEL MAIN TUBE AND RETURN TUBE
(FUEL TUBE CONNECTORS) FROM FUEL SUCTION
PLATE
CAUTION:

Perform disconnecting operation of the fuel tube con-
nector (quick type) after reading the precautions.
(See page SF-1)

Prevent the retained pressure in the fuel line from
splashing inside the vehicle compartment.

Be careful not to damage the contact surface or let the
foreign matters on there when sealing the tube and
the suction plates with the quick connectors through
O-ring.

Be sure to perform the disconnection by hand. Do not
use tools.

Do not bend or turn the nylon tube by force.
(a) Before the operation, remove foreign matters or dirt stick-
ing to the tube joint clips.
(b) Enlarge the tip of the clips with fingers and pull them out
for disconnection.
(c) Pull out the fuel main tube and the return tube.
If the nylon tube and the suction plate stick together, ease the
connection by turning the nylon tube with fingers and pull it out
for disconnection.
NOTICE:
Plug the port of the fuel suction plate with a clean rubber
cap.
(d) After the disconnection, protect the connector with a plas-
tic bag.

B16446
Engine Wire Clamp
No.4 V-bank Cover BracketEngine Wire Protector
Fuel Pressure
Regulator

Gasket

Upper Gasket

Lower GasketRH Delivery PipeSpacer
Front Fuel Pipe
Grommet
InjectorLH Delivery Pipe

Insulator
Fuel Main Hose
VSV for EVAP
* 33 (340, 24)
39 (400, 29)
Fuel Pressure
Pulsation Damper
Spacer

Gasket
SpacerSpacer

O-Ring
Injector Connector
PCV Hose
Vacuum Sensing Hose
No.2 V-Bank
Cover Bracket
N´m (kgf´cm, ft´lbf)

Non-reusable part: Specified torque
* For use with SST
Engine Wire Clamp

Gasket

Gasket
39 (400, 29)
39 (400, 29)
Fuel Return Pipe
O-Ring
Fuel Return Hose
No.1 V-Bank Cover Bracket
7.5 (80, 66 in.´lbf)
No.3 V-Bank Cover Bracket
21 (214, 15)
21 (214, 15)
- SFIINJECTOR
SF-21
1720 Author
: Date
:
2004 LAND CRUISER (RM1071U)

SF0Y3-06
B04989
SST
InjectorFuel Filter
(On-V ehicle)
Fuel Tube
Connector
SST
SST
SST
Pressure Regulator
B05006
Disconnect
Pull
Push
B04990
B05011
SST (Hose)
B04988
Pressure Regulator
SST (Hose)
SST (Union)
Fuel Return Hose
SF-24
- SFIINJECTOR
1723 Author
: Date
:
2004 LAND CRUISER (RM1071U)
INSPECTION
1. INSPECT INJECTOR INJECTION
CAUTION:
Keep injector clean of sparks during the test.
(a) Disconnect the fuel inlet hose (fuel tube connector) from
the fuel filter.
CAUTION:

Perform disconnecting operations of the fuel tube
connector (quick type) after reading the precautions
(See page SF-1).

Prevent the retained pressure in the fuel pipe line
from splashing inside the engine compartment.
(b) Use a new fuel main hose and take out the fuel tube con-
nector from its hose.
Part No. 23271-50150
(c) Connect SST (hose) and fuel tube connector to the fuel
filter outlet.
SST 09268-41047
CAUTION:
Perform connecting operations of the fuel tube connector
(quick type) after reading the precautions (See page
SF-1).
HINT:
Use the vehicle's fuel filter.
(d) Remove the pressure regulator from the delivery pipe.
(e) Install the O-ring to the fuel inlet of the pressure regulator.
(f) Connect SST (hose) to the fuel inlet of the pressure regu-
lator with SST (union) and the 2 bolts.
SST 09268-41047 (09268-41091)
Torque: 7.5 N´m (80 kgf´cm, 66 in.´lbf)
(g) Connect the fuel return hose to the fuel outlet of the pres-
sure regulator.

B04935Clamp
SF-28
- SFIINJECTOR
1727 Author
: Date
:
2004 LAND CRUISER (RM1071U)
2. INSTALL ENGINE WIRE TO LH DELIVERY PIPE
Install the 2 wire clamps on the engine wire to the brackets on
the delivery pipe.
3. INSTALL ENGINE WIRE PROTECTOR
(a) Connect the engine wire clamp to the No.1 engine hang-
er.
(b) Install the engine wire protector with the 2 bolts.
(c) Connect the PCV hose to the PCV valve.
(d) Connect VSV EVAP to the upper intake manifold.
(e) Install the No.1 V-bank cover bracket to the upper intake
manifold.
(f) Install the No.2 V-bank cover bracket to the upper intake
manifold.
(g) Install the No.3 V-bank cover bracket to the upper intake
manifold.
(h) Install the No.4 V-bank cover bracket to the upper intake
manifold.
4. INSTALL FUEL PRESSURE PULSATION DAMPER
(See page SF-1)
5. INSTALL INTAKE AIR CONNECTOR
6. INSTALL V-BANK COVER

B04999
SF0Y2-05
B04935Clamp
Clamp
Clamp
SF-22
- SFIINJECTOR
1721 Author
: Date
:
2004 LAND CRUISER (RM1071U)
REMOVAL
1. REMOVE V-BANK COVER
2. REMOVE INTAKE AIR CONNECTOR
3. REMOVE FUEL PRESSURE PULSATION DAMPER
Remove the pulsation damper, the upper gasket, the fuel main
hose and the lower gasket.
CAUTION:

Put a shop rag under the delivery pipe.

Slowly loosen the pulsation damper.
4. DISCONNECT ENGINE WIRE PROTECTOR FROM UP-
PER INTAKE MANIFOLD
(a) Disconnect the PCV hose from the PCV valve.
(b) Disconnect the VSV for EVAP from the upper intake man-
ifold.
(c) Remove the No.1 V-bank cover bracket from the upper
intake manifold.
(d) Remove the No.2 V-bank cover bracket from the upper
intake manifold.
(e) Remove the No.3 V-bank cover bracket from the upper
intake manifold.
(f) Remove the No.4 V-bank cover bracket from the upper
intake manifold.
(g) Remove the 2 bolts, and disconnect the engine wire pro-
tector from the upper intake manifold.
(h) Disconnect the engine wire clamp from the No.1 engine
hanger.
5. DISCONNECT ENGINE WIRE FROM RH DELIVERY
PIPE
Disconnect the 2 wire clamps on the engine wire from the brack-
ets on the delivery pipe.
6. REMOVE DELIVERY PIPES AND INJECTORS
NOTICE:

Be careful not to drop the injectors when removing
the delivery pipes.

Since the O-ring may be stuck to the injector, do not
put a side load on it at the removal.

FI2553
SST
B04902Fuel Pump Connector
Disconnect SF-2
- SFISFI SYSTEM
1701 Author
: Date
:
2004 LAND CRUISER (RM1071U)
(c) Do not a severe impact during removal or installation.
Handle all SFI parts carefully, especially the ECM.
(d) Be careful during the troubleshooting as there are numer-
ous transistor circuit, and even slight terminal contact can
cause further troubles.
(e) Do not open the ECM cover.
(f) When inspecting in rainy weather, take care to prevent
entry of water. Also, when washing the engine compart-
ment, prevent water from getting on the SFI parts and the
wiring connectors.
(g) Parts should be replaced as the original assembly.
(h) Care should be taken when pulling out and inserting the
wiring connectors.
(1) Release the lock and pull out the connector.
(2) Fully insert the connector and check that it is locked.
(i) Use SST for the inspection, the injector and the wiring
connector test.
SST 09842-30070
8. FUEL SYSTEM
(a) When disconnecting the high fuel pressure line, a large
amount of gasoline may be spilled:
(1) Disconnect the fuel pump connector.
(2) Start the engine. After the engine has stopped on
its own, turn the ignition switch OFF.
(3) Put a container under the connection.
(4) Slowly loosen the connection.
(5) Disconnect the connection.
(6) Plug the connection with a rubber plug.
(7) Reconnect the fuel pump connector.