1996 TOYOTA LAND CRUISER engine

SF1ED−04
−
SFI SFI SYSTEM
SF−1
629
Author: Date:
1996 LAND CRUISER (RM451U)
SFI SYSTEM
PRECAUTION
1. BEFORE WORKING ON FUEL SYSTEM, DISCON-
NECT NEGATIVE (−) TERMINAL CABLE FROM THE
BATTERY.
HINT:
Any diagnostic trouble code retained by the computer will be
erased when the negative ( −) terminal cable is disconnected.
Therefore, if necessary, read the diagnosis before disconnect-
ing the negative ( −) terminal cable from the battery.
2. DO NOT SMOKE OR WORK NEAR AN OPEN FLAME WHEN WORKING ON FUEL SYSTEM.
3. KEEP GASOLINE AWAY FROM RUBBER OR
LEA TH-
ER PARTS
4. MAINTENANCE PRECAUTIONS
(a) In event of engine misfire, these precautions should be taken.
(1) Check proper connection of battery terminals, etc.
(2) Handle high −tension cords carefully.
(3) After repair work, check that the ignition coil termi- nals and all other ignition system lines are recon-
nected securely.
(4) When cleaning the engine compartment, be espe-
cially careful to protect the electrical system from
water.
(b) Precautions when handling the oxygen sensor. (1) Do not allow the oxygen sensor to drop or hit
against an object.
(2) Do not allow the sensor to come in contact with wa- ter.
5. IF VEHICLE IS EQUIPPED WITH MOBILE RA-
DIO
SYSTEM (HAM, CB, ETC.)
If the vehicle is equipped with a mobile communication system,
refer to the precaution in the IN section.
6. AIR INDUCTION SYSTEM
(a) Separation of the engine oil dipstick, oil filler cap, PCV hose, etc. may cause the engine to run out of tune.
(b) Disconnection, looseness or cracks in the parts of the air
induction system between the throttle body and cylinder
head will allow air suction and cause the engine to run out
of tune.
7. ELECTRONIC CONTROL SYSTEM
(a) Before removing SFI wiring connectors, terminals, etc., first disconnect the power by either turning the ignition
switch OFF or disconnecting the negative ( −) terminal
cable from the battery.
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P03244Press Down
Lock
P03245Lock Insert
FI2553
SST
SF−2
−
SFI SFI SYSTEM
630
Author: Date:
1996 LAND CRUISER (RM451U)
HINT:
Always check the diagnostic trouble code before disconnecting
the negative ( −) terminal cable from the battery.
(b) When installing the battery, be especially careful not to in-
correctly connect the positive (+) and negative ( −) cables.
(c) Do not permit parts to receive a severe impact during re- moval or installation. Handle all SFI parts carefully, espe-
cially the ECM.
(d) Do not be careless during troubleshooting as there are numerous transistor circuits and even slight terminal con-
tact can further troubles.
(e) Do not open the ECM cover.
(f) When inspecting during rainy weather, take care to pre-
vent entry of water. Also, when washing the engine
compartment, prevent water from getting on the SFI parts
and wiring connectors.
(g) Parts should be replaced as an assembly.
(h) Care is required when pulling out and inserting wiring con-
nectors.
(1) Release the lock and pull out the connector, pulling
on the connectors.
(2) Fully insert the connector and check that it is locked.
(i) When inspecting a connector with a volt/ohmmeter (1) Carefully take out the water −proofing rubber if it is
a water−proof type connector.
(2) Insert the test probe into the connector from the wir-
ing side when checking the continuity, amperage or
voltage.
(3) Do not apply unnecessary force to the terminal.
(4) After checking, install the water−proofing rubber on
the connector securely.
(j) Use SST for inspection or test of the injector or its wiring connector.
SST 09842−30070
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FI1654
Fulcrum Length
30 cm
SST
−
SFI SFI SYSTEM
SF−3
631
Author: Date:
1996 LAND CRUISER (RM451U)
8. FUEL SYSTEM
(a) When disconnecting the high fuel pressure line, a large
amount of gasoline will spill out, so observe the following
procedures:
(1) Disconnect the fuel pump connector.
(2) Start the engine. After the engine has stopped onits own, turn off the ignition switch.
(3) Put a container under the connection.
(4) Slowly loosen the connection.
(5) Disconnect the connection.
(6) Plug the connection with 2 rubber plugs.
(7) Reconnect the fuel pump connector.
(b) When connecting the union bolt on the high pressure pipe
union, observe the following procedures:
(1) Always use a new gasket.
(2) Tighten the union bolt by hand.
(3) Tighten the union bolt to the specified torque.
Torque: 29 N·m (300 kgf·cm, 21 ft·lbf)
(c) When connecting the flare nut on the high pressure pipe union, observe the following procedures:
(1) Apply a light coat of engine oil to the flare and tight-
en the flare nut by hand.
(2) Using SST, tighten the flare nut to the specified torque.
SST 09631−22020
NOTICE:
Do not rotate the fuel pipe, when tightening the flare nut.
Torque: 30 N·m (310 kgf·cm, 22 ft·lbf)
HINT:
Use a torque wrench with a fulcrum length of 30 cm (11.81 in.).
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P09286
New O−ring
Grommet Injector
Delivery Pipe WRONG
CORRECT
P09401
Fuel Return Hose
SF−4
−
SFI SFI SYSTEM
632
Author: Date:
1996 LAND CRUISER (RM451U)
(d) Observe the following precautions when removing and
installing the injectors.
(1) Never reuse the O −ring.
(2) When placing a new O −ring on the injector, take
care not to damage it in any way.
(3) Coat a new O −ring with spindle oil or gasoline be-
fore installing −never use engine, gear or brake oil.
(e) Install the injector to the delivery pipe and intake manifold
as shown in the illustration.
(f) Check that there are no fuel leaks after doing mainte- nance anywhere on the fuel system.
(1) Remove the fuse cover on the instrument panel.
(2) Connect the TOYOTA hand− held tester to the
DLC3.
(3) Turn the ignition switch ON and TOYOTA hand −
held tester main switch ON.
NOTICE:
Do not start the engine. (4) Select the active test mode on the TOYOTA hand−held tester.
(5) Please refer to the TOYOTA hand −held tester oper-
ator ’s manual for further details.
If you have no T OYOTA hand−held tester, connect the positive
(+) and negative ( −) leads from the battery to the fuel pump con-
nector (See page SF−14 ).
(6) Pinch the fuel return hose. The pressure in the high
pressure line will rise to approx. 392 kPa (4 kgf/cm
2,
57 psi). In this state, check to see that there are no
leaks from any part of the fuel system.
NOTICE:
Always pinch the hose. Avoid bending as it may cause the
hose to crack.
(7) Turn the ignition switch to LOCK.
(8) Disconnect the TOYOTA hand −held tester from the
DLC3.
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SF0Y1−06
SF−22
−
SFI FUEL PRESSURE REGULATOR
1996 LAND CRUISER (RM451U)
INSTALLATION
1. INSTALL FUEL PRESSURE REGULATOR
(a) Fully loosen the lock nut on the pressure regulator.
(b) Apply a light coat of gasoline to a new O −ring, and install
it to the pressure regulator.
(c) Insert the pressure regulator into the delivery pipe by hand completely.
(d) Turn the pressure regulator counterclockwise until the fuel outlet port faces in the direction indicated in the il-
lustration.
(e) Tighten the lock nut. Torque: 25 N·m (250 kgf·cm, 18 ft·lbf)
2. CONNECT FUEL RETURN HOSE TO FUEL PRES-
SURE REGULATOR
3. CONNECT V ACUUM SENSING HOSE TO FUEL PRES-
SURE REGULATOR
4. START ENGINE AND CHECK FOR FUEL LEAKAGE
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SF0Y1−06
SF−22
−
SFI FUEL PRESSURE REGULATOR
1996 LAND CRUISER (RM451U)
INSTALLATION
1. INSTALL FUEL PRESSURE REGULATOR
(a) Fully loosen the lock nut on the pressure regulator.
(b) Apply a light coat of gasoline to a new O −ring, and install
it to the pressure regulator.
(c) Insert the pressure regulator into the delivery pipe by hand completely.
(d) Turn the pressure regulator counterclockwise until the fuel outlet port faces in the direction indicated in the il-
lustration.
(e) Tighten the lock nut. Torque: 25 N·m (250 kgf·cm, 18 ft·lbf)
2. CONNECT FUEL RETURN HOSE TO FUEL PRES-
SURE REGULATOR
3. CONNECT V ACUUM SENSING HOSE TO FUEL PRES-
SURE REGULATOR
4. START ENGINE AND CHECK FOR FUEL LEAKAGE
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SF1EN−01
SF−26
−
SFI INJECTOR
1996 LAND CRUISER (RM451U)
REMOVAL
1. DRAIN ENGINE COOLANT
2. DISCONNECT CRUISE CONTROL ACTUATOR CABLE
3. DISCONNECT ACCELERATOR CABLE
4. DISCONNECT THROTTLE CABLE
5. DISCONNECT NO.2 PCV HOSE
6. DISCONNECT AIR CLEANER HOSE
7. REMOVE EGR VACUUM MODULATOR AND VALVE (See page EC−10 )
8. REMOVE BOLT HOLDING HEATER INLET PIPE AND AIR INTAKE CHAMBER
9. DISCONNECT NO.1 PCV HOSE
10. DISCONNECT VACUUM SENSING HOSE
11. DISCONNECT NO.2 WATER BYPASS HOSE
12. DISCONNECT EVAP HOSE
13. DISCONNECT BRAKE BOOSTER HOSE
14. DISCONNECT THROTTLE POSITION SENSOR CON- NECTOR
15. DISCONNECT IDLE AIR CONTROL VALVE CONNEC-
TOR
16. DISCONNECT CONNECTOR FOR EMISSION CON- TROL VALVE SET ASSEMBLY
17. DISCONNECT EGR GAS TEMP. SENSOR CONNEC-
TOR
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−
SFI INJECTOR
SF−27
1996 LAND CRUISER (RM451U)
18. DISCONNECT PS RESERVOIR TANK
Remove the 3 bolts and disconnect the reservoir tank.
19. REMOVE ENGINE OIL DIPSTICK
20. DISCONNECT GROUND STRAP
21. REMOVE INTAKE MANIFOLD STAY
Remove the 2 bolts and intake manifold stay.
22. DISCONNECT VACUUM HOSES FROM TVV
23. DISCONNECT NO.1 WATER BYPASS HOSE FROM
CYLINDER HEAD
24. REMOVE AIR INTAKE CHAMBER
Remove the 6 bolts, 2 nuts, air intake chamber and 2 gaskets.
25. REMOVE FUEL RETURN PIPE
(a) Disconnect the fuel hose from the fuel pressure regulator.
(b) Remove the 2 bolts and fuel return pipe.
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